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What is a Defra Approved Wood Burning Stove?

If you reside in a zone of smoke control it is essential to purchase a DEFRA exempt stove. A DEFRA exempt stove (or SE) permits you to legally burn wood in a smoke controlled area.

They are independently tested to ensure the lowest possible emissions. Stoves with this status typically carry the 'Defra approved' logo in their names or specifications.

Approved for Smoke Controlled Areas

Many people think that living in a Smoke Control Area means you can't have a stove that burns wood and this is not true. Most cities and large towns are within a smoke control zone but that doesn't mean they can't use a wood burning stove. It's simply that they must burn authorised fuels in their stove (usually briquettes). The Defra approved stove is a specific type of wood burning stove that has been tested to ensure it meets certain criteria in regards to the emissions that it produces when burning fuels that are approved and therefore, it can be used legally in the Smoke Control Area.

The Defra logo is widely used by the industry and a large number of the stoves approved have SE after their name which means they are smoke exempt. To be SE approved the stove must satisfy strict emission requirements. This means that you can be sure that you're buying the best wood stove that is available.

If you search for a stove that burns wood that is Defra exempt or has SE after its name, you'll usually discover that the manufacturer has carried out things like making sure there are enough air intakes on the front of the stove to allow full combustion of the fuel, and that the chimney outlet size is sufficient to stop the build-up of soot. This is crucial as it will ensure that the smoke from the stove does not escape through the chimney and into your home.

Another benefit of a Defra approved stove is that it usually permits you to use it with 5" chimney liner, which is in compliance with the UK building regulations. However, non-DEFRA stoves price range approved stoves will need to be fitted with a bigger 6" liner.

At Stovax we are delighted to offer a selection of Defra approved stoves and fires. We also have our Ecodesign Ready stoves that have been designed with the future of air quality standards in mind. Many of our Defra-approved stoves are also able to be used in conjunction with a smoke control system for homes located in Smoke Control Zones. They can be utilized to burn a variety of in smokeless fuels, including fire logs.

Approved for Smokeless Fuels

The only stove that can be installed within a smoke-control zone is one that is a DEFRA approved wood burner, which is also known by the designation DEFRA exempt. This stove must be used with solid fuel, which means wood, preferably well-seasoned. The government tests them to ensure they don't release excessive smoke and can only be used with fuels that are 'authorized.

The difference between a DEFRA approved contemporary stoves-approved kitchen and one that isn't approved is usually quite small. Modern stoves can be made DEFRA certified by a kit that is supplied by the manufacturer and installed in just a few minutes. This is because the Defra approved stove has to undergo very rigorous tests and is limited on how much smoke it can produce.

To ensure that these limitations are not violated during testing, the stove will have to be able to limit its combustion air supply to ensure that it does not deplete itself of oxygen, which could cause it to smoulder. This is done by a mechanism in the stove that allows a small amount of air into the firebox during combustion, which is typically hidden within the stove, and under the base of the fire box.

Stove World UK has a wide range of DEFRA guidelines stoves approved stoves, made by some of the best manufacturers in the world, including Stovax Arada and Burley. These are available in a wide variety of styles and finishes. You can also choose from a vast range of Ecodesign ready stoves that are specifically designed to meet future standards for air quality.

Smoke Control Zones are located mainly in large cities and towns. You can check the website of your local authority to determine whether you reside in one. If you reside in a smoke controlled area it is very important to purchase a DEFRA approved stove for your home to avoid being fined by the local authority. This is because if you use 'unauthorised Multi Fuel Stove Defra Approved on a non-approved stove, like coal or any other solid fuels that could result in fines of up to PS300.

Approved for Wood

A DEFRA approved wood stove, also called a smoke exempt stove is an appliance that can be used in a Smoke Control Area when burning wood. The stove will bear the Defra approved symbol or 'SE' in front of its name that means it is only permitted to be used in areas controlled by smoke when you burn approved fuels. In this case wood is the fuel.

Many older wood stoves emit large quantities of particulate matter, which can trigger or exacerbate respiratory problems, asthma attacks and heart issues. It is therefore essential to choose a wood stove that is compliant with the strict emission standards established by the Environmental Protection Agency. Look for an "EPA 2020 Certified" label, which signifies that the stove has met the emissions limits that are currently in place.

If you buy a stove which is not EPA-certified and you reside in a smoking zone you'll have to recertify it before you can use the stove. It can be costly and time consuming, but it is legally required. In addition homeowners who sell a home with a wood stove that isn't certified may be liable for clean air tax credits as well as fines.

With a kit or an adjustment supplied by the installer, most modern stoves can be made Defra-approved. This is because the main difference between the DEFRA approved stove and one that aren't is the combustion air management system which regulates how much air flows through the stove during normal operation. Modifications are typically applied to the base or the side of the firebox that is underneath the stove.

There are some manufacturers who produce two different versions of a wood stove: one that is Defra-approved and the other not. This is due to the process of putting a stove through the stringent Defra tests can be very costly and to offset some of the costs, they will sell the non-approved version at a cheaper cost. The DEFRA approved version will have been subjected to the modification of combustion air performed as part of the testing procedure.

Approved for Gas

Prior to the Clean Air Acts, residential homes could burn any fuel they wanted, leading to large amounts of smoke emissions. This caused health problems. To prevent this, Defra established Smoke Control Areas. This meant that homes could not produce any smoke in the event that their wood burners or multifuel stoves were approved by Defra for burning only authorised substances like manufactured smokeless coke and anthracite.

Defra approved SE (Smoke-Exempt) Stoves have been put through rigorous tests to demonstrate that they can efficiently burn fuels that are approved within a Smoke Control Area. They do this by using the latest technology for combustion that continually delivers a minimum amount of secondary air to the combustion chamber, so that even if the stove is being used with fuels that are authorised, such as anthracite or manufactured smokeless coals, it can still comply with the regulations of Defra for Smoke Control Areas.

If you're looking to purchase a new wood burning stove and you live in an area that has a Smoke Control Area then we recommend that you take a look at the range of Defra approved stoves that can be found at The Stove Yard. We have a wide range of Defra-approved stoves, including traditional models, modern and inset from top brands like Stovax. Arada, Burley and AGA.

The good thing is that there is no visual difference between a stove approved by Defra and one that isn't. However the stoves that are approved by Defra have a few features that are designed to ensure they burn cleaner. They usually have a slightly different grate and air vents, and on gas versions they may have a smaller flue outlet.

A Defra Approved Stove will almost always have 5" flue outlet (125mm). This means you can use a smaller stainless steel twin wall flexible liner that is cheaper than a 6" (150mm). We've seen this helpful when customers have an old or non-standard chimney stack that we are installing the Defra approved wood-burning stove in and it saves the cost of relining the chimney with a larger diameter liner.