Category: Wood Burning Stove

New Report Reveals Charnwood C-Five Stove Helps Improve Indoor Air Quality!

charnwoodstoves
28 Nov 2023

In the ongoing debate over air quality and PM2.5 emissions, modern wood-burning stoves often face unfair criticism. The root of the issue lies in the unfortunate lumping together of modern ultra-efficient stoves with their vastly more polluting counterparts—open fires, outdoor bonfires and old, poorly maintained stoves. Today, we turn our attention to the latest report, released by the Environmental Research Group. 

Anti-woodburning groups have previously drawn on questionable data often not recognising the crucial distinctions between various types of wood-burning. However, there is a glimmer of progress, as this latest report at least acknowledges some of the benefits of ultra-efficient stoves and that ClearSkies 5 Stoves can in fact improve indoor and outdoor air quality. This is a step in the right direction.   

Key Findings from the London Wood-Burning Project: 

On page 71 of the 127-page report, we find the page titled Key Findings. Below are the 4 crucial pieces of information from this page: 

1/ Use of the clearSkies Level5 stove demonstrated some benefits for indoor air quality. Indoor PM2.5 did not increase when adding fuel to the stove once lit… At times there was actually a decrease in indoor concentrations of PM2.5 when adding fuel. 

As we have long pointed out, a properly functioning wood stove draws particulates out of the room and up the flue, helping improve air quality and ventilation in the home. The stove used in this study was our Charnwood C-Five. 

2/ Increases in pollutant concentrations may be more affected by participant technique or specific airflow characteristics of an individual appliance, rather than to the type of appliance or fuel. 

We always encourage best stove practices and will continue to do our level best to educate new and existing customers and beyond.  

3/ However, the biggest increases in PM2.5 concentrations indoors did not relate to indoor wood or solid-fuel burning but instead were a result of cooking, especially frying, grilling and use of the oven, and particularly when the extraction fan was not used. 

Again, we have tried to communicate this fact for a long time, as it really provides perspective on the issue of PM 2.5 in the home. A slice of burnt toast or your Sunday lunch can contribute far more than a wood-burning stove. 

4/ The PM2.5 increase measured outdoors, due to the non-DEFRA exempt stove, was double the increase due to the clearSkies Level 5 stove. 50 μg m-3 and approx. 25 μg m-3 

The methodology used to gather this data from the environment, again, can not adequately separate the different sources of PM2.5 in the tested areas. It is subject to error from many environmental factors, such as road traffic, construction, manufacturing, and other industrial processes. 

However, this data does still accept that a modern ClearSkies 5 stove significantly reduces emissions. We have rigorously tested all Charnwood stoves and when ensuring best stove practices and using seasoned wood with a moisture content of less than 20%, emissions can be reduced by up to 90% in comparison with an open fire. This provides an exceptionally clean burn! 

Differentiating Wood-Burning Practices: 

It is essential to differentiate between various forms of wood-burning. The UK government’s 2020 figures highlight that Ecodesign-compliant stoves contribute only 1-2% to PM2.5 emissions, a fraction compared to other sources. ClearSkies Level 5 stoves, surpass Ecodesign standards, offering a further reduction in emissions by up to 30%! 

This is where the anti-wood-burning stove movement has gotten it so wrong in the past. By not differentiating accurately between different wood-burning practices they have missed the opportunity to really help reduce PM 2.5 emissions with a solution that has been proven to work – modern ultra-efficient stoves. 

In London 70% of wood burning still occurs on open fires. If people were widely encouraged to switch to one of the many modern and efficient wood burning stoves available, it would massively reduce urban PM 2.5 emissions. The emissions of 70% of London Wood burning could be reduced by 90%! 

Wood-Burning Stove’s Co-Heating Future  

Heat pumps, solar and wind energy, have positive qualities, but are simply not sufficient to meet our home heating needs on their own. This is particularly true for the vast amount of older housing stock across the UK. Wood-burning stoves can increase the uptake of other renewables by providing energy security and filling the gaps in power. 

Below is a link to an article which comprehensively explains why modern wood-burning stoves will be an essential heating solution long into the future. 

Wood-Burning Stove’s Co-Heating Future (A Nuanced Look At PM 2.5 Emissions) 

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With gas and electricity prices set to increase even further in January 2024, we need all sides of the debate to work towards a more informed and positive dialogue. For our part, we continue to lead the industry in creating the most efficient stoves on the market. We are investing heavily to continually improve and are passionate about providing people with energy security and the many other benefits offered by wood-burning stoves. 

The SIA Examine the Latest (Misleading) Wood-Burning Stove Study

charnwoodstoves
17 Nov 2023

The Stove Industry Alliance (SIA) has carefully examined a recent study by Global Action Plan/Impact on Urban Health, titled “Relight my fire? Investigating the true cost of wood-burning stoves.” In this blog, we will present some of the key insights and considerations revealed by the SIA that address the misleading conclusions made. 

Study Methodology Critique 

The SIA raises important questions regarding the methodology used in the study. Specifically, the model scenarios seem to artificially inflate the costs associated with wood-burning stoves while decreasing costs related to Air Source Heat Pumps (ASHP). The SIA points out discrepancies in cost consideration, installation assumptions, and the efficiency impact of heating system distribution. 

Here are just two of the key points raised which show why it is impossible to draw accurate conclusions from the data set: 

Model B “includes the cost of purchasing the item (stove) and installation, while all options include maintenance and replacement costs.” The SIA questions why the purchase and installation costs have been factored in for the stove led heating in Model B, as they have not been factored in for the gas boiler led heating, Model A? 

Model E “Newly installed Air Source Heat Pump (ASHP) providing 100% of heat” underestimates the actual running costs of the ASHP in the reference dwelling used (a Victorian mid-terrace of single skin, uninsulated solid brick construction). Heat pumps are not suitable for use in badly insulated housing stock; they will not run optimally in these conditions and therefore won’t give a 3.5 seasonal CoP which the report uses to reach its conclusions.  

Appliance Efficiency 

When evaluating cost-effectiveness, appliance efficiency is a highly significant variable, and is not accurately reflected in the study. Since January 1, 2022, all solid fuel stoves have had to adhere to Ecodesign Regulations and ensure a minimum efficiency of 75%. Many of our stoves surpass this requirement, with tested efficiencies exceeding well beyond 80%, which is comparable to the most efficient gas room heaters in peak condition. It is also important to consider that wood-stoves offer individuals better localised space heating, meaning they allow you to heat the space you need without wasting heat on empty rooms. This is a key part of many people’s heating strategy and this flexibility also facilitates off-grid low-carbon sustainable living. 

Comparative Fuel Costs 

The SIA references data from various sources, including Nottingham Energy Partnership, to provide readers with a comprehensive view of comparative costs per kWh for different heating fuels. As of October 2023, the price per kWh for an ASHP is 12.37p, kiln-dried logs at 11.18p, mains gas at 8.64p, and electricity at 33.40p. It should be noted that, between November 2022 and June 2023, kiln-dried wood logs were more cost-effective than mains gas per kWh. 

This points to another key reason people choose wood-burning stoves – energy security. It is still fresh in everyone’s minds how susceptible gas and electricity prices are to spiking at a moment’s notice because of global issues. Sustainable sources of wood are available locally and provide a vital shield against the next crisis. 

We invite you to read our blog on why people are choosing wood-burning stoves to better understand the many factors that were missed in this study. 

SIA’s Recommendations: 

We are fully aligned with the SIA on the recommendations for those considering or currently using wood-burning stoves: 

-Choose an Ecodesign compliant, sustainable, solid fuel stove. 

-Upgrade from an open fire or older stove to reduce emissions significantly. 

-Ensure your stove is Defra exempt if you live in a Smoke Control Area. 

-Seek guidance from local SIA Retail Group members for the right stove size and installation. 

-Have your stove fitted by a qualified professional (HETAS or OFTEC registered). 

-Use quality fuel, ensuring wood logs have a moisture content at or below 20%. 

-Regularly service and sweep your chimney for optimal stove performance. 

For a more detailed look at best practices, before the winter bites, read our essential-wood-burning-stove-tips! 

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There are many factors that determine which heating solution is best for your home. As pointed out by the SIA, this latest study has missed many factors that favour wood-burning stoves, particularly as part of a modern co-heating solution.  

Charnwood Stoves remains committed to leading the industry in producing the most reliable, efficient, and sustainable wood-burning stoves on the market. We continue to invest heavily in research and development to improve efficiencies even further and have many exciting developments on the way!   

Read how a wood-stove can help you save money on your bills! 

What wood can you not burn in a log burner?

charnwoodstoves
16 Nov 2023

With the colder, darker months fast approaching, autumn is well and truly upon us.

And, with chunky knits, boots and jumpers already making an appearance, many people are thinking about how they’ll keep their homes warm and snug during the winter months.

Over recent years, wood burners have increased in popularity, with many people considering them to be an effective way to heat their homes for less during the ongoing energy crisis.

However, it’s important to remember that not all types of fuel are suitable for use in a wood burner. In fact, using the incorrect wood can increase maintenance costs, deliver poor stove performance, and even prove to be dangerous.

 

Types of wood to avoid

Within this guide, we’ll take a look at the types of wood you should avoid or burn with caution when using your wood burning stove.

 

Old pallets and treated timber

However tempting it may seem avoid burning pallets and treated timber. Paint, varnishes and oils can give off harmful emissions and can damage your stove and chimney.

Pine

Because pine has a high resin content, it is not considered the best wood to burn on a log burner. It burns quickly and the resin can seep out and clog up different parts of the stove system, which can lead to a whole host of operational problems. If you do choose to burn pine ensure it is well seasoned.

 

Larch

Much like Pine, Larch contains high levels of resin, which forms sticky deposits inside of the stove and flue.

 

Poplar

Poplar doesn’t burn for long periods of time and, when it does burn it can be smoky. As a result, it isn’t a good choice for a wood burner.

 

Laburnum

Laburnum is poisonous when used as firewood so should not be used as fuel for a log burner.

 

Alder

Alder produces a relatively low heat output, and is renowned for popping and sparking as it burns. This type of wood burns quickly but produces very little heat.

 

Chestnut

Most varieties of chestnut are okay to burn on a log burner, however, you should be aware that they tend to spit and spark, meaning many people are reluctant to use them.

 

Cypress

Cypress isn’t ideal as your main firewood source as it provides a low heat output and doesn’t produce very good coals.

 

Spruce

Spruce produces little heat making it an ineffective fuel for a log-burning stove.

 

Willow

Firewood should contain a moisture content of below 20%. Willow tends to grow in wet soils or beside water bodies, giving it a high moisture content so if you choose to burn it ensure it is dry and well seasoned.

 

Learn more about the different types of firewood.

 

What wood can I burn on a log burner?

Although there are many types of wood that shouldn’t be used on a wood burner, there are also many that you can use for fuel, including:

 

Hardwood firewood

Hardwoods, including ash, birch, maple, oak, and the majority of fruit trees, are some of the best fuels for wood burning stoves due to the fact that they can burn for long periods of time while generating plenty of heat. Hardwood is also cleaner to handle than other types of wood.

 

Softwood firewood

Some softwoods tend to be cheaper than hardwoods and can also be used in your wood burning stove.

 

Explore the best firewood to burn in the UK.

 

Why choose us?

Founded in 1972, we are a privately owned, family-controlled, British company specialising in the design and manufacture of high-quality wood burning and multi-fuel stoves. Our team are committed to providing the highest quality stoves, at the best possible price.

We also have a firm focus on protecting the environment and ensuring our operations are sustainable and responsible.

We operate a policy of caring for the environment in all aspects of the business; from the products we design, to the way we package them, to the way we transport them, to the way we deal with the disposal of waste products, to the vehicles we use, to our choice of raw materials.

 

Get in touch now

If you have any questions about our wood burning stoves, please get in touch with a member of our team today.

The Truth About Wood Burning Stoves and Air Quality

charnwoodstoves
15 Nov 2023

As we head into the cooler months many of us are preparing to light the log burner or, if we don’t already have one, considering installing one. Wood burning has been around since the dawn of civilisation and there is undoubtedly a primal connection with fire within us as humans. At Charnwood, we have 50 years of expertise in wood burning technology and the stoves we sell across the globe today are among the cleanest, greenest appliances available on the market.

However recently there have been a number of reports circulating within the media that suggest stoves may be polluting our environment and are bad for our health. What is the truth about wood-burning stoves and air quality? In this article, we delve into the real facts and why many of these reports are very misleading and damaging to an industry that is a part of the solution to clean, sustainable, low carbon energy.

 

Is particulate matter (PM 2.5) from wood-burning stoves damaging our health?

The term particulate matter, also known as fine particles or PM 2.5 refers to tiny particles or droplets in the air. They are about thirty times smaller than the width of a human hair.

The World Health Organisation’s (WHO) safe level for PM 2.5 particulates in the air is a daily average of ≤ 10 µg/m3 (1). For reference, air outside in Central London averages 18-25 µg/m3.

A US study in 2019 of 137 homes published in the Journal of Exposure Science & Environmental Epidemiology, found that the average daily level of PM 2.5 particulates in homes (2):
– with a wood stove measured at 6-8 µg/m3
– no wood stove measured only a fraction less at 6-7 µg/m3

So, we’re really talking about a minuscule difference that is well within the WHO safe level. Hard to believe? It really shouldn’t be because a correctly functioning wood stove draws air, smoke and particulates out of a room and up the chimney.

In contrast, the UK media bases its negative assertions on a study of just 19 homes that took measurements using, as they admit, “low-cost air quality monitors” (3).

It is impossible to remove PM 2.5 completely from our lives and some measured thinking on this subject is required. When you consider that brakes from an electric car and even a burnt piece of toast (as well as a host of other everyday items) produce significant amounts of PM 2.5 particles, it helps put things in perspective!

However, we welcome regulation and continue to innovate to reach even greater levels of efficiency and emission reduction. We are proud that we are now creating stoves that are 90% more efficient than open fires and new innovations are forthcoming.

We welcome more studies being undertaken, but what is clear is that the most comprehensive data available to date indicate that the dangers presented from wood-burning stoves are exaggerated, to say the least.

 

Are wood-burning stoves environmentally friendly?

In most cases yes they are. But it is worth noting that not all wood-burning stoves are the same. At Charnwood, we only produce stoves that meet the criteria for EcoDesign 2022 which significantly reduces particle emissions while ensuring very high efficiencies.

The Stove Industry Alliance (SIA) have produced this short film to help dispel some of the myths around wood-burning stoves with the real facts.

It’s worth considering that as wood burning stove sales have increased in record numbers during the recent lockdowns, with more opportunity for their use, measurements for 2.5 µg/m3 actually decreased. Coincidence? No, it’s because modern wood-burning stoves are not the problem.

Much of the confusion has come from DEFRA lumping in wood-burning stoves with open fires and bonfires and then presenting a grouped figure for emissions – this totally distorts the data (4). An EcoDesign Ready stove produces 90% fewer emissions than an open fire and 80% less than older designed stoves. Despite this fact, modern wood-burning stoves continue to get tarnished in the press for the faults of open fires and the like and continue to get attributed to an unrepresentative figure. It is open fires that need to be scrutinised and those who have made the switch to an EcoDesign Ready wood-burning stove should be commended for doing so and more people should be encouraged!

Also learn why burning the right wood saves money and protects the environment.

At Charnwood, we recently released the Cranmore, which is the perfect open fire replacement. Super-efficient, clean and with an EcoDesign score of 5 (the highest possible), its dimensions and aesthetic are perfectly suited to an open fireplace. If you have an open fire, we encourage you to make the switch!

 

Wood burning stoves are part of our home heating solution

At Charnwood we are big fans of wind and solar energy – indeed our factory roof on the Isle of Wight is covered with panels and many of us have installed solar on our roofs at home. They are a big part of the solution, but it’s important to remember that even these much-lauded technologies have some downsides. Firstly, they don’t offer a constant supply and then there are environmental costs, although relatively low, involved in their production. However, overall, the net benefit for the world is clear and demonstrable.

Fossil fuels on the other hand are non-renewable and as we all know, polluting. The main advantage is the ability to provide power 24/7 – but they’re not a sustainable part of the world’s future.

These are just a few examples, but they highlight that no energy source can be 100% perfect. It’s about finding energy sources that are, on balance, positive for society and wood-burning stoves fall into this category as a very viable solution.

 

Wood burning stoves

Wood is a renewable energy source, sucking carbon out of the atmosphere as trees grow. Of course, there are best practices that need to be followed and selecting the right type of wood from the right sources is key.

 

Wood burning stoves have numerous benefits:
– They can produce heat for long periods.
– Allowing them to work in conjunction with wind, solar and other energies helps make these great technologies more viable – They are not in competition with each other.
– An ideal emergency/low-frequency heat source.
– Wood is a carbon-neutral fuel as it gives off the same amount of carbon whether it is burnt or decays naturally. The carbon released from burning wood is balanced out by the carbon absorbed by the tree during its lifetime.
– Ability to source fuel locally and without fracking and deep-sea oil drilling.
– A good quality stove can last many decades and provide an affordable source of heat for low-income households.
– The right to repair. The majority of components used within a Charnwood stove are modular and can be replaced when or if they wear out further extending the life of your stove.
– Charnwood stoves and packaging are fully recyclable.

Also find out the wellbeing benefits of having a wood-burning stove.

 

Wood Burning Stoves: An antidote to the digital age

In addition, the mental health benefits absolutely shouldn’t be overlooked. It’s no coincidence sales of stoves rocketed during the hardships of the last couple of years. People recognised the need to make their homes as comfortable and stress-free as possible. Restorative spaces that help us face the trials and tribulations. This isn’t trivial in the slightest. This is a benefit that no other energy source we’ve talked about can provide. You don’t get a visceral connection to nature by flicking on a switch. Fire affords a primal connection that genuinely helps people unwind and reconnect.

We’ve spoken to many customers about their stove and the responses are strikingly similar. Their stove provides much more than just heat. It’s clear from our conversations that burning wood provides enormous well-being and associated mental and physical health benefits. People report it helps them “switch off” and “after a day in front of a screen, chopping wood [and] preparing the fire really helps me to reconnect to the real world”, “brings the family together”, “helps me sleep better”, “almost like a meditation”. You simply don’t get this from another heat source.

To the individual and family, this is clearly hugely beneficial. Now consider this extrapolated across a population and the effect multiples – it becomes powerful. Improving people’s wellbeing and reducing stress allows people to take more actions/decisions from a healthier state of mind. This in turn can only contribute positively to society.

It is widely accepted that few things are as unhealthy as chronic stress and from our personal experience as well as our customers few things can relieve it as consistently well as the process of wood-burning.
– The pleasure of foraging (optional)
– Exercise/stress relief from chopping wood (optional)
– Feeling connected to a historical and natural process
– Lighting a fire – satisfaction of a job well done.
– Enjoying the long-lasting and penetrating warmth
– Deep relaxation with the crackle and flicker of fire
– A focal point for friends and family

So in conclusion an EcoDesign Ready wood burning stove is a clean and environmentally sound choice for heating your home. It is of course important that it is used correctly and the fuel burnt is properly seasoned but this is a source of energy that provides not only warmth but can be key to our wellbeing.

Also explore the best firewood to burn chart in the UK.

 

Golden rules. 3 steps to burning wood on your stove efficiently

1/ Good fuel – This is wood that has been stored and allowed to dry until the moisture content has reduced to 20% or less. Freshly cut or ‘green wood’ holds up to 70% water which causes far more smoke to be produced. It is for this reason we have long stressed the importance of using seasoned wood because it produces a significantly cleaner burn – reducing emissions by up to 50%. Additionally, improved efficiency equals cheaper running costs, while a cleaner fuel means your stove and chimney will require less maintenance. It’s a win-win.

2/ Efficient stove – Charnwood is proud to have stoves certified in the inaugural clearSkies listing, an independent emissions and energy performance certification mark for stoves. Many Charnwood products carry a level 5 certification (the highest available rating) which guarantees performance levels and exceed the minimum EcoDesign criteria by a sizable 30%. This is only awarded to stoves that significantly reduce particle emissions while ensuring high efficiencies and a superior flame picture.

3/ Correct use – this is a variable that has until now been dependant on the experience and diligence of the end-user, providing mixed results. That is why Charnwood are developing new technology that will give the user the option of automating this process. This will mean the stove will burn at the most efficient rate possible, further improving its green credentials. Watch this space!

1/ https://en.wikipedia.org/wiki/Air_quality_guideline
2/ https://www.nature.com/articles/s41370-019-0151-4
3/ https://www.mdpi.com/2073-4433/11/12/1326/htm
4/ https://www.gov.uk/government/publications/summary-results-of-the-domestic-wood-use-survey

Other useful sources of information:
5/ https://stoveindustryalliance.com/
6/ https://www.readytoburn.org/

 

Why Choose Us?

At Charnwood Stoves, we stand committed to revolutionising home heating with eco-friendly wood-burning stoves. Our legacy of craftsmanship spans decades, ensuring each stove combines cutting-edge technology with timeless design. Our team prioritise clean-burning solutions, championing air quality while delivering warmth and ambiance to your space. With an unwavering dedication to sustainability, our stoves not only elevate your home but also minimize environmental impact. Choose Charnwood Stoves for reliability, innovation, and a greener approach to heating.

Get in touch with us today.

 

Multi-Fuel Stove Regulations & Rules in 2023

charnwoodstoves
11 Nov 2023

As environmental concerns continue to shape the UK’s regulatory landscape, advancements in stove technology have been made to meet stringent eco-friendly standards. Multi-fuel stoves, widely popular for their versatility, efficiency, and aesthetic appeal, are not exempt from these regulations.

In this article, we will explore the latest regulations and rules governing multi-fuel stoves in 2023, with a focus on Ecodesign, planning permission, fuel liners, hearth requirements, and ventilation regulations in the UK.

 

What is Ecodesign?

Ecodesign is an initiative by the European Union to improve the energy efficiency and environmental performance of products, including stoves and fireplaces. It came into effect in the UK on January 1st 2022.

In the UK, Ecodesign regulations have been embraced as part of the government’s commitment to reducing carbon emissions and mitigating climate change and, as of 2023, all newly-manufactured stoves must meet the Ecodesign standards, ensuring lower emissions and higher efficiency compared to older models. Ecodesign sets out maximum emission levels of PM (Particulate Matter), CO (Carbon Monoxide), OGC (Organic Gaseous Compounds) and NOx (Nitrogen Oxide).

Ecodesign only affects those room-heating appliances made available for sale from 2022 onwards; stoves and fireplaces already installed will not be affected.

 

Will Ecodesign affect the heat produced in a multi-fuel stove?

No, the implementation of Ecodesign regulations does not necessarily impact the heat output of multi-fuel stoves. The primary aim of Ecodesign is to reduce harmful emissions, making these stoves more environmentally friendly. Manufacturers have adapted by employing innovative design features and technology to maintain or even improve heat output while complying with the Ecodesign standards.

Discover more about multi-fuel stoves.

 

Is planning permission required to install a multi-fuel stove?

In most cases, installing a multi-fuel stove in the UK does not require planning permission. Permitted Development Rights (PDR) allow homeowners to make certain improvements to their property without seeking planning permission. Under PDR, you can install a multi-fuel stove, provided it meets specific criteria, such as not being installed on a listed building or within a designated conservation area. However, it is always recommended to consult with your local planning authority or a professional installer to ensure compliance with local regulations.

 

Is it a legal requirement to have a flue liner?

While it’s not a legal requirement, using a fuel liner is highly recommended when installing a multi-fuel stove. A flue liner is a flue or chimney lining that ensures proper venting of combustion gases and helps prevent dangerous emissions, such as carbon monoxide, from entering your living space. A fuel liner will increase efficiency, help keep your chimney clean and improve safety.

Your wood burning stove needs to meet the building regulations listed in Document J, which recommends (but does not require) that flue liners are used.

 

Top Hearth Requirements

The hearth is the base on which the multi-fuel stove sits, and it must meet certain requirements to comply with UK regulations. The top hearth, also known as the stove hearth or constructional hearth, must be made from a non-combustible material, such as stone, concrete, or a suitable hearth pad such as enamel. It should extend a certain distance beyond the stove’s footprint to prevent accidental fires. The specific dimensions and constructional requirements may vary based on the stove’s heat output and other factors, so it is vital to follow the manufacturer’s guidelines and UK building regulations.

 

Ventilation Requirements

Proper ventilation is essential to ensure the safe operation of a multi-fuel stove. Adequate air supply allows for efficient combustion and reduces the risk of carbon monoxide build-up.

The ventilation requirements of your home will depend in part on when it was built; homes built after 2008 are designed to have an air permeability of 5m3/hm2 or less, due to the increased energy efficiency. Homes built before 2008 are unlikely to meet this level of air permeability. You can have your stove fitter test your home’s air permeability.

For homes with an air permeability of 5m3/hm2 or more, i.e. most older homes, ventilation is only required for stoves with heat outputs above 5kW, and this is done in increments of 550mm2. For example, a 6kW heat output would require 550mm2, a 7kW heat output requires 1100mm2, an 8kW heat output requires 1650mm2 and so on.

For homes with an air permeability of 5m3/hm2 or less, i.e. any home built since 2008, and some homes built before, the increments of 550mm2 start from 0, so a 1kW heat output would require 550mm2, a 2kW heat output requires 1100mm2, and a 3kW heat output requires 1650mm2.

This ventilation can be achieved through vents in the wall or an air brick. Installers must carefully calculate the required ventilation to meet building regulations.

 

Why Choose Us?

Charnwood has been committed to providing quality wood burning stoves since 1972 and we know all there is to know about wood burners and their regulations. If you have any questions about heating your home with a wood burning stove, please get in touch.

 

Installing a Wood Burning Stove in a Shed – Everything You Need to Know

charnwoodstoves
11 Nov 2023

If you’re looking to transform your shed into a cosy retreat or a functional workspace, a wood burning stove can be the perfect addition. Not only does it provide efficient heating during cold months, but it also brings a rustic charm and warm ambience to your shed space.

However, before embarking on the journey of installing a log burner in your shed, there are crucial aspects to consider. From regulations and safety requirements to cost estimates and proper sizing, this comprehensive guide is designed to equip you with all the essential information you need to make informed decisions and ensure a successful installation.

 

Can I install a log burner in my shed?

In short, yes. A wood burning stove can be a fantastic addition to a shed, providing warmth and comfort while also giving the space a cosy atmosphere. However, they need to be installed properly and you may be better off in the long run hiring a professional to do it.

Firstly, size does matter – your shed needs to be big enough to accommodate not only the log burner but also the space required between the burner and any combustible materials, which may include the shed’s walls!

As part of scoping out your shed’s suitability for housing a wood burning stove, check the materials used to construct it. Wooden sheds are common, but some materials might not be suitable for log burner installations due to fire safety concerns. You may be required to fit non-combustible surfaces around and behind the log burner to make it safe. Take a look at our stove pod or Vlaze wall and floor panels : Both of these offer a very practical solution.

You also need to make sure that your shed has proper ventilation. Combustion requires oxygen, and without sufficient airflow, the wood burning stove may not burn efficiently or could even become a safety hazard due to the build-up of carbon monoxide.

 

How much does it cost to install a wood burning stove in a shed?

The cost of installing a wood burning stove in a shed can vary depending on several factors, including the type of log burner, shed size, materials, and labour costs.

The price of the stove itself ranges from a few hundred to £1,500 or more, depending on the features. You’ll also need a flue pipe and a chimney installation. The cost of these components typically ranges from £150 to £500. Installing a non-combustible hearth beneath the stove is essential and can cost around £100 to £300.

Hiring a professional installer is highly recommended to ensure safety and compliance. Labour costs might range from £500 to £1000 or more, depending on the complexity of the installation. While this is a sizeable outlay, it could save you money overall.

 

Regulations for installing a wood burning stove in a shed

In the UK, installing a wood burning stove in a shed is subject to a number of safety guidelines.

There must be a safe distance between the wood burning stove and any combustible materials like wood, plastic, or insulation. Typically, the required distance is 60cm from the sides and 80cm from the front of the stove. There isn’t a legal minimum requirement so these distances vary by model and manufacturer.

The chimney height should conform to specific requirements, usually at least 4.5 meters from the top of the stove to the flue exit point. The chimney should use an appropriate flue liner to ensure the safe passage of smoke and gases.

A carbon monoxide detector must be installed in the shed to alert occupants if there is a potential build-up of this harmful gas.

The installation should be carried out by a qualified and registered professional who is familiar with building regulations and safety standards.

Does dampness affect the appliance?

Yes, dampness can impact the efficiency and safety of the log burner. Moisture can affect the structural integrity of the stove and its components. Additionally, damp wood can lead to incomplete combustion, producing excess smoke, creosote, and harmful gases.

To prevent dampness from affecting the appliance:

• Use only well-seasoned firewood with a moisture content of around 20% or less – dry firewood burns more efficiently and produces less smoke.

• Store firewood off the ground and protect it from rain and snow by using a woodshed or covering.

• Ensure your shed has adequate ventilation to allow for proper air circulation. Good ventilation helps to prevent moisture buildup inside the shed.

• Invest in a moisture meter to regularly check the moisture content of your firewood.

• Clean your wood burning stove and flue regularly to remove any accumulated ash, debris or creosote.

• Install a chimney cap on top of the flue to protect it from rainwater and debris

• Regularly inspect the roof, chimney, and flue for any signs of leaks. Address any issues promptly to prevent water from entering the shed and affecting the wood burning stove.

• If possible, position the log burner away from potential sources of dampness, such as leaky windows or doors, or anywhere water might drip onto it.

• In cases where dampness is a persistent issue, consider using a dehumidifier inside the shed. A dehumidifier helps to reduce excess moisture in the air and creates a drier environment.

 

Best Wood burning Stove Sizes

The best size will depend on your shed’s dimensions and insulation levels. A stove that is too large may overheat the space, while one that is too small may not provide sufficient heat. To determine the best size, calculate the cubic meters of the shed by multiplying the length, width, and height, and take note of your shed walls’ thickness and composition. Then, consult a specialist; they’ll be able to recommend a stove size based on your shed’s measurements and insulation.

 

Sealing a Roof When Installing a Wood burning Stove

Properly sealing the roof where the flue penetrates is crucial to prevent leaks and maintain the shed’s weather resistance.  Install a flue pipe collar around the flue pipe where it exits the roof, then use a weatherproof sealant to fill any gaps or joints. This provides a watertight seal and prevents water from entering the shed.

Always consider hiring a professional roofer or installer to ensure the roof sealing is done correctly and complies with building regulations. Remember to check and comply with local regulations and obtain necessary permits before installing a wood burning stove in your shed. Safety should always be the top priority, and professional installation is highly recommended.

 

Why Choose Us?

We’ve been committed to providing quality wood burning stoves since 1972 and we know all there is to know about wood burners, wherever they’re installed. If you have any questions about heating your home with a wood burning stove, please get in touch.

 

How to use a wood burning stove

charnwoodstoves
26 Oct 2023

More people than ever before are using a wood burning stove to heat their homes.

With the ability to quickly and effectively heat up a single room or even an entire home, wood burning stoves are one of the most efficient ways to heat a space. Of course, wood burning stoves also look great and can add an exciting focal point to any room.

If you’re thinking about investing in a wood burning stove, you’re in the right place. Here’s our guide to everything you need to know about using one.

Correct installation

We always recommend that you buy your stove through an official Charnwood stockist, where the installation and after-sales support will be of a standard approved by us.
It is important your stove is installed by either by a HETAS registered engineer or in accordance to building regulations (refer to document J https://www.gov.uk/government/publications/combustion-appliances-and-fuel-storage-systems-approved-document-j )

All official Charnwood Stockists will offer this service and by purchasing through this channel you will also qualify for our 10 year dealer backed guarantee.

 

Familiarise yourself with our stove instruction guide

First and foremost, when you are having your wood burning stove installed, it’s important to familiarise yourself with our instruction guide, so that you know how to get the best from your stove.

Explore more on how to install a wood-burning stove.

 

Choosing the right fuel

Next, you’ll need to choose the right fuel for your stove, either a hardwood or a softwood fuel. Failure to use the correct fuel can affect how long your fire burns, increase fuel costs, and damage the internal parts of your woodburning stove. It can even cause damage to the stove body or flue system.

To light your stove we recommend the top down method.

1) Clear the grate of ash then Place 2-3 smaller logs on the stove bed
2) On top of this build a stack of 6-8 kindling sticks
3) Then place a natural fire lighter inside
4) Fully open the air control for maximum air intake and a quick and easy ignition
5) Light the fire lighter and close the door but leave it slightly a jar
6) This helps to heat the chimney flue and burn hot and clean
7) Once the fire is burning well close the door and reduce the air intake
8) Re-fuel little and often
9) Every time a log is added open the air control again until the fire is burning well and then return the control to normal

By running your stove in this way you will achieve maximum efficiency with minimum emissions

To find out more about using your Charnwood wood burning stove, please get in touch.

Find out more about our approved wood-burning stove fuel.

 

Why Choose Us?

Selecting the right wood-burning stove is a significant decision, and at Charnwood Stoves, we’re here to make that choice clear and rewarding. With decades of expertise, we excel in producing stoves that marry functionality with elegance, enhancing your living space while providing efficient heating.

Our commitment to sustainability sets us apart. Our team take pride in crafting stoves that not only warm your home but also contribute to a greener planet. By choosing Charnwood Stoves, you’re investing in a product that balances performance with environmental responsibility.

Innovation is at the heart of our philosophy. We’re dedicated to staying at the forefront of stove technology, ensuring our products are equipped with the latest advancements for optimal use. When you choose us, you’re choosing a legacy of quality, style, and warmth that will enrich your home for years to come. Experience the Charnwood difference today by getting in touch with our team.

 

Are Wood-Burning Stoves Eco-Friendly?

charnwoodstoves
21 Oct 2023

As energy bills continue to soar and households across the UK are preparing to manoeuvre what is set to be another challenging winter, many of us are looking for alternative solutions to heat our homes.

If you’re considering opting for a wood-burning stove and are wondering whether or not it is eco-friendly, you’ve landed in the right place. We’ve created a helpful guide outlining everything you need to know.

 

What is a wood-burning stove?

A wood-burning stove is a self-contained heating appliance designed to produce indoor heat through the process of wood combustion.

More and more households are opting for wood burning stoves to heat their home as it gives them fuel independence from the larger utility companies.

Modern wood-burning stoves or log burners are considered to be more efficient and cheaper to run than traditional gas and electric heaters, making them a great choice for those looking to stay warm and cut costs at the same time.

 

How does a wood-burning stove work?

Wood burning stoves provide a controlled heating solution that burns wood safely, whilst heating a space at the same time. For those looking for affordable wood burning stoves, the market offers various options that balance cost with quality. In the UK, wood burning stoves are popular for their efficiency and aesthetic appeal.

There are no electrical components in a wood stove; instead, they are powered by manual input – in other words, the wood or fuel that is set alight. Here’s a brief overview of how a wood burning stove operates:

• Wood is placed inside the stove’s firebox, which is surrounded by fireproof walls.

• The wood burning stove’s air vents control the amount of airflow to the firebox, which allows the wood to burn efficiently and slowly.

•  The stove’s metal enclosure radiates heat which ensures spaces of all shapes and sizes remain warm and toasty.

For those with limited space, small wood burning stoves offer a compact yet effective solution to keep your home cosy.

Explore more on how to use a wood-burning stove.

 

Is burning wood bad for the environment?

This is a question that continues to crop up and there have been some very misleading articles and campaigns in recent years that suggest bu. The answer depends on how it is burnt and the source of the wood being burned. If wood is properly seasoned and burnt on an modern, Ecodesign wood burning stove then the impact on the environment is minimal. You can read more here.

Are wood-burning stoves environmentally friendly?

Wood burning stoves are considered to be one of the most environmentally friendly ways of heating your home, especially when it comes to reducing your carbon footprint.

 

Benefits of a wood-burning stove

Wood burning stoves offer a number of benefits, including the following:

• Stylish – wood burning stoves are aesthetically pleasing and bring a sense of well being

• Flexible placement – they can be installed in various locations around the home

• Economical – a wood burning stove can be cheaper to run than other types of heating, reducing utility bills

• Environmentally friendly – less damaging to the environment than other types of heating

• Provides reliable heating, even during power outages.

 

How much wood does a wood burner use?

This depends on a number of factors, however generally speaking, if you use your wood burner a few evenings a week over the winter, you will need 3-4 cubic metres of wood.

 

What wood is best for a wood-burning stove?

The best type of wood to use with a wood burning stove is hardwood, such as Beech, Elm, Birch, and Oak. For those considering affordable wood burning stoves in the UK, selecting the right wood is crucial for maximising efficiency.

When choosing hardwood for your wood burning stove, including small wood burning stoves, you should keep in mind that the heavier the wood, the greater the heat output. This also means that the wood will burn for longer, limiting the number of times you will need to refill.

Find out more about our approved wood-burning stove fuel.

 

How to make a wood-burning stove more efficient?

There are a number of different ways that you can optimise the efficiency of your wood burning stove, including:

• Ensuring you light the fire correctly

• Always use the correct amount of fuel

• Always use the best type of wood – remember hardwood is the best and it should have a moisture content of less than 20%

• Maintaining an efficient temperature and always controlly airflows

• Circulating the heat from your wood stove

• Have your chimney and flue swept regularly (twice a year)

• Maintaining your stove

 

What to look for in an environmentally friendly log burner

When looking for an environmentally friendly log burner, you should look for a ClearSkies rated stove

 

Why choose us?

Founded in 1972, we are a privately owned, family-controlled, British company that specialises in the design and manufacture of high-quality wood burning and multifuel stoves. We are committed to providing the highest quality stoves, at the best possible price.

Here at Charnwood, our team operate a policy of caring for the environment in all aspects of the business; from the products we design, to the way we package them, to the way we transport them, to the way we deal with the disposal of waste products, to the vehicles we use to our choice of raw materials.

 

Get in touch now

If you have any questions about our wood burning stoves, please do not hesitate to get in touch with a member of our team today.

 

When is it Time to Replace Your Wood Burning Stove?

charnwoodstoves
15 Oct 2023

Wood burning stoves have long been a staple in many homes, providing warmth and a cosy atmosphere during colder months. However, like any appliance, these stoves have a finite lifespan. Understanding when it’s time to replace your wood burning stove is essential for maintaining safety, efficiency, and comfort in your living space.

In this article, we delve into what to look out for when it’s time to bid farewell to your trusty old wood burning stove and welcome a newer, more efficient model into your home.

 

What is the Lifespan of a Wood Burning Stove?

On average, a well-maintained wood burning stove can last anywhere from 10 to 20 years and sometimes longer. The ingenuity behind Charnwood stoves lies in their modular design, allowing the majority of components to be replaced gradually as needed. However, it’s important to note that there might eventually come a time where the stove body itself reaches the end of its lifespan.

The primary determinant of a stove’s lifespan is the materials used in its construction. High-quality stoves crafted from durable materials such as cast iron or steel tend to have longer lifespans. Cast iron stoves are known for their robustness and ability to withstand high temperatures, while steel stoves are lighter and offer durability when properly cared for.

The longevity of a wood burning stove also depends on other factors, including its usage, maintenance and environmental factors, such as excessive moisture.

Also find out how a wood-burning stove can help reduce energy bills.

 

Are Newer Wood Burning Stoves More Efficient?

In recent years, advancements in stove technology have led to the development of more efficient and eco-friendly models. These newer stoves are designed to burn wood more efficiently, generating more heat with less fuel consumption and emitting fewer pollutants.

When considering the lifespan of your wood burning stove, it’s worth weighing the benefits of upgrading to a newer model that not only extends the longevity of the appliance but also offers enhanced performance and reduced environmental impact.

A new initiative from the EU, Ecodesign, has been brought in to improve the energy efficiency and environmental impact of all stoves, including wood burning stoves.

 

Signs That Your Wood Burning Stove Needs Replacing

Warping

One of the key indicators that it’s time to replace your wood burning stove is warping. Over time, intense heat exposure can cause the metal components of the stove to warp, affecting its structural integrity. Warping can lead to gaps in the seams, which may result in heat leakage, decreased efficiency, and even potential safety hazards.

 

Cracks and Splits

Cracks and splits are clear signals that your wood burning stove has reached the end of its useful life. Cracks, especially in the firebox or other critical areas, can allow smoke and fumes to escape into your living space, posing health risks. Regular maintenance and cleaning can help prevent cracks, but once it becomes widespread, replacement becomes the safer choice.

 

Broken Door

The door of a wood burning stove plays a critical role in ensuring the stove operates safely and efficiently. If you’re experiencing difficulty in closing or sealing the door properly, it could indicate a problem with the hinges, gaskets, or other components. A broken or ill-fitting door can lead to improper combustion, inefficient burning, and potential escape of harmful gases. You may be able to repair or replace the door, however, in some cases, it may be better to replace the stove altogether.

Increased Smoke Levels

An increase in smoke levels or the presence of smoke within your home when using the wood burning stove is a clear sign that something is amiss. It could be due to poor ventilation, a blocked chimney, or even an issue with the stove itself. Inefficient burning can lead to the production of more smoke, which not only decreases indoor air quality but also shows that the stove is not operating at its best.

 

More Fuel for Less Heat

As wood burning stoves age, their efficiency tends to decline. If you find that you’re using more fuel than usual to achieve the same level of heat output, it’s an indicator that your stove’s performance is diminishing. This situation not only puts a dent in your pocket due to increased wood consumption but also contributes to higher emissions. Investing in a newer, more efficient stove can result in substantial long-term savings on fuel costs.

Explore more about wood-burning stoves.

 

Why Choose Us?

As the stove approaches the end of its expected lifespan, it’s essential to pay close attention to signs of wear and deterioration. If efficiency drops, visible damage such as warping or cracks occur, or repairs become increasingly frequent and costly, it might be an indication that the stove has reached the end of its useful life.

Upgrading to a more modern model not only enhances the aesthetics of your living space but also contributes to reducing your carbon footprint. The increased efficiency of newer stoves means you’ll need less fuel to achieve the same or even better heat output, leading to significant long-term savings.

Charnwood has been committed to providing quality wood burning stoves since 1972 and we know all there is to know about getting the most out of wood burners and how to choose your next wood burning stove. If you have any questions about heating your home with a wood burning stove, please get in touch.

How to Check Your Firewood is Ready to Burn

charnwoodstoves
11 Oct 2023

When it comes to creating a warm and inviting atmosphere in your home during the colder months, a crackling fire can be just the ticket – but the success of your fire largely depends on the quality of your firewood. Burning damp or unseasoned wood not only produces less heat but also creates excessive smoke and creosote build-up in your chimney, posing a fire hazard. Therefore, it’s crucial to know how to determine if your firewood is ready to burn.

In this article, we’ll delve into the importance of dry wood, the best methods to check if your firewood is ready, and the proper techniques for storing it.

 

Importance of Dry Wood

Using properly seasoned firewood is paramount for efficient and safe burning. Seasoned wood, often referred to as “dry” wood, has had sufficient time to reduce its moisture content. When wood is cut, it typically contains a significant amount of water, known as its moisture content.

Burning wood with high moisture content requires a substantial amount of energy to evaporate the water before it can combust, leading to less heat produced and more smoke emitted. In contrast, dry firewood burns efficiently, generating more heat and decreasing the potential for creosote build-up.

 

Best Ways to Detect When Firewood is Ready to be Burned

There are several reliable methods to determine if your firewood has reached the appropriate level of seasoning:

Moisture meter

A moisture meter is a valuable tool for gauging the moisture content of your firewood. These handheld devices use metal prongs to measure the electrical resistance between them, which changes based on the wood’s moisture level. For well-seasoned firewood, the moisture content should ideally be around 20% or lower. Readings higher than this indicate that the wood requires further drying. Moisture meters are easy to use and provide a quick and accurate assessment of your firewood’s readiness.

Colour

The colour of firewood can offer clues about its readiness to burn. Seasoned firewood tends to be darker in colour, with visible cracks and splits on the ends. Unseasoned wood, on the other hand, appears lighter and smoother. As the wood dries, it develops these distinctive characteristics, making colour a simple yet effective way to assess its readiness for the fireplace.

Find out why we split firewood.

Sound

When two pieces of dry firewood are knocked together, they produce a sharp, resonant sound. In contrast, unseasoned wood creates a dull, thudding noise. By tapping two pieces of firewood together, you can listen for the distinct sound that indicates the wood is dry and ready to be burned.

Explore the best firewood to burn chart UK.

Feel

Dry firewood is notably lighter than its unseasoned counterpart as there is much less water to weigh the wood down. Pick up a piece of wood and feel its weight. If it feels significantly lighter than you’d expect, it’s a good indicator that the wood has lost much of its moisture and is suitable for burning.

 

How to Correctly Store Firewood

Properly storing firewood is crucial to maintaining its dryness and overall quality. By adhering to the following storage guidelines, you can preserve the quality of your firewood and ensure it’s ready to produce a warm and efficient fire when the time comes.

Elevate and cover

Store your firewood off the ground to prevent moisture from seeping in. A raised platform or pallets work well for this purpose. Cover the top of the stack with a tarp or other waterproof covering to shield it from rain and snow.

Allow air circulation

Airflow is essential for drying out firewood. Arrange the wood in a way that allows air to circulate between the pieces. This encourages further moisture evaporation.

Choose a dry location

When selecting a storage area, opt for a dry, well-ventilated spot. Avoid areas prone to high humidity, such as directly against a wall or in a basement.

Rotate the stack

If you’re storing firewood for an extended period, periodically rearrange the stack. Moving the older pieces to the front and bringing the newer pieces to the back ensures that all the wood gets air exposure and continues to dry evenly.

Explore more ways to store firewood outdoors.

 

Why Choose Us?

Charnwood has been committed to providing quality wood burning stoves since 1972 and we know all there is to know about wood burners, and how to get the most out of the wood you burn. If you have any questions about heating your home with a wood burning stove, please get in touch.