Learn about HETAS certificates of compliance

Why do you need one and how to order a replacement copy

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New biomass maintenance requirements

Use the HETAS website search to find approved biomass maintenance engineers.

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Cleaner Choice

Raising Industry Standards

Discover cleaner appliances

Stay safe this Winter

Visit our Advice Hub for a range of tips to get the most from your stove

Visit the Advice Hub

HETAS support cleaner and safer choices for the use of biomass and other solid fuels, appliances and associated technologies.

We work to promote the highest standards for fuel, appliances and people to encourage the safe, efficient and environmentally responsible use of solid fuels including wood.

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HETAS is a not for profit organisation offering a competent person scheme for installers of biomass and solid fuel heating, registration for retailers and chimney sweeps and approval of appliances and fuels.

Search for your local installers, chimney sweeps, retailers, products and fuels to enable safe and efficient use of your system into the future.

You can also access a full range of expert advice to ensure you operate your stove and biomass system in the most efficient way, from how to light a fire, what fuels to use and when to have appliances serviced and chimney swept.

Our services


Biomass Maintenance


Chimney Sweeps




HETAS Approved Retailers give you confidence in getting a suitable, efficient and safe wood burning or biomass appliance for your home. All approved retailers contain at least one HETAS trained showroom staff member, meaning quality advice can be given to the end-user that meets a good standard of service.


HETAS is the only competent person scheme specialising in the installation of solid fuel and biomass appliances. The HETAS ‘Find Installer’ search makes it easy to find your nearest HETAS Installer of solid fuel, wood and biomass appliances.

Biomass Maintenance

HETAS has launched a new registration scheme for engineers to demonstrate competency in the servicing and maintenance of domestic and commercial biomass appliances.

Chimney Sweeps

A good chimney is essential to the continuing efficient and safe operation of all solid fuel burning heating and cooking appliances. HETAS recommends that chimney sweeping is best carried out by a HETAS Approved Sweep at least once a year, depending upon the appliance and fuel being used.


Servicing your stove is critically important if you want to keep it operating efficiently and safely. HETAS servicing technicians can give your stove the expert attention it needs to ensure it can perform safely and efficiently. Our search allows you to filter for servicing for stoves, stoves with boilers and biomass systems.


HETAS has introduced the new Cleaner Choice Product Approval Scheme focused on raising industry standards and driving consumers towards the cleanest burning biomass and solid fuel appliances proven to go above and beyond in minimising harmful particle emissions, reducing the impact of their use on air quality and the environment.


As a non-profit organisation, we pride ourselves on investing surplus funds into business areas that directly contribute to safely reducing particulate and carbon emissions for the benefit of the people and the environment.

We set the benchmark for best practices in our industry through the provision of the competent person scheme and industry-leading training to increase the safe and environmentally responsible use of biomass and other solid fuels, appliances, and associated technologies.

Biomass Maintenance

Recent legislation has been laid that places a requirement on participants of the non-domestic Renewable Heat Incentive. HETAS has developed a scheme to support businesses in meeting the requirements of the new legislation.

All About HETAS

Advice Hub

The HETAS Advice Hub has a range of tips and advice to help you make the most of your stove or biomass system. From lighting a fire, when to have your chimney swept, what to do with your stove ash, through to advice on how to burn better. Visit the Hub for expert advice from the HETAS team.

HETAS Technical Hub Access

HETAS registered businesses can access a range of documents and services in our exclusive Technical Hub. From notifying your recent installations, viewing your installation history, business details with HETAS through to all the HETAS Technical Bulletins and guidance documents.

Associated businesses


Woodsure is a not-for-profit organisation, striving to raise the quality of woodfuel in the industry. The Woodsure certification scheme and its logo shows woodfuel users the suppliers and products that they can trust.

Woodsure assesses and certifies the five most common types of wood fuel, each with different attributes and qualities that provide a flexible range of storage and use options appropriate to differing needs.

Woodsure is the administrative body for the Biomass Suppliers List and for the Ready to Burn certification scheme for woodfuel.

Ready to Burn

The Air Quality (Domestic Solid Fuels Standards) (England) Regulations 2020 saw the introduction of the Ready to Burn certification mark for woodfuel and solid mineral fuels in England. The legislation focuses on combustion in domestic properties in England.

Consumers can easily identify fuels that are suitable for immediate use and have been certified as Ready to Burn by looking for the Ready to Burn certification mark on the packaging.

HETAS is the certification body for solid mineral fuels and Woodsure is the certification body for woodfuels.

HETAS Advice

Top tips for keeping your stove glass clean

Refuel your appliance safely

Moving Home?

How to Sweep a Chimney

How to light a fire

The Importance of Chimney Sweeping

Cold Plug – Winter Safety Advice

When Should I Get My Chimney Swept?

Safe Disposal of Ash from Your Stove

The HETAS team have put together some top tips for keeping your stove glass clean, so you can continue to enjoy the perfect view of those flames.

Recent research has raised the issue of refuelling a fire, so we have put together some tips to help you safely refuel.

If you’re moving home, the HETAS team have put together a useful guide about what documentation you require when the property has a stove.

Sweeping your chimney is a vital part of owning a wood-burning or multifuel stove or fireplace. A regular sweep is essential for getting rid of any deposits or debris that can put you at risk of a chimney fire.

Lighting a fire can sometimes be difficult and there are countless guides on the internet. Our team has pulled together the best guidance available so you can get it right first time.

In this article the HETAS team look at the importance of chimney sweeping and appliance maintenance as part of Defra’s Clean Air Strategy.

An unexpected issue for stove users during winter can be a cold plug in their flue. The HETAS team offers advice to help resolve this problem.

HETAS recommend that chimney sweeping is best carried out by a HETAS Approved Chimney Sweep. This guide talks through how often you need your chimney swept.

HETAS is advising homeowners to safely dispose of ash from their wood burning and multi fuel stoves following a recent carbon monoxide incident and house fire.

Working together for a cleaner, safer environment.


HETAS, Severn House, Unit 5 Newtown Trading Estate, Green Lane, Tewkesbury, GL20 8HD