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Department for Business, Energy and Industrial Strategy

Boiler equipment

Several types of boilers are covered by the Energy Technology List

Biomass Boilers

Biomass boilers are products that are specifically designed to burn solid biomass fuels in order to heat water. They are used to heat water for process or space heating.

Read the criteria for ETL inclusion here.

Browse Biomass Boilers on the ETL

Gas-fired Condensing Water Heaters

Gas-fired condensing water heaters are used to provide hot water for domestic purposes or process heating, and offer an energy efficient method of generating hot water. Gas-fired condensing water heaters are specifically designed to continuously provide hot water either by the direct heating of water as it passes through the product, or the heating of water contained in an integral storage vessel.

Read the criteria for ETL inclusion here.

Browse Gas-fired Condensing Water Heaters on the ETL

Hot Water Boilers

Hot water boilers are used to produce hot water for space heating, process heating and domestic uses. They are available in a wide range of different designs and efficiencies. These products heat water by means of a heat exchanger that transfers heat from combustion into the water as it passes through the product.

Read the criteria for ETL inclusion here.

Browse Hot Water Boilers on the ETL

Steam Boilers

Steam boilers are products that are specifically designed to convert water into pressurised steam by means of a burner that converts fuel into heat and a heat exchanger that transfers the heat into the water as it passes through the product. Steam boilers are used to produce steam for process heating, space heating and water heating. They consist of a burner, a pressure vessel containing a heat exchanger, and associated burner control systems and boiler control equipment.

Read the criteria for ETL inclusion here.

Browse Steam Boilers on the ETL

More information (PDF)