HETAS is the national organisation working for consumer safety and the wider public interest in safe, efficient and environmentally responsible use of biomass and other solid fuels.

HETAS Guide is published annually and provides installers and specifiers with a useful list of approved appliances, chimneys and associated equipment.

From 2022 HETAS will only accept Ecodesign compliant stoves.

HETAS support The Government published Clean Air Strategy 2019, a key document in tackling air pollution, making our air healthier to breathe, protecting nature and boosting the economy.

The government’s objective is to raise awareness of the potential impacts of air pollution at home and ensure that consumers are armed with reliable information enabling them to make informed choices to protect themselves, their families and their neighbours.


The particulate material (PM) emission limits for Ecodesign is 55% lower than for Defra Exempt stoves. This is why the Mayor of London has recommended the installation of Ecodesign Ready stoves, that are also Defra Exempt. Ecodesign ready stoves must currently also be Defra exempt to be used in smoke control areas.