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  2. Annual fuel utilization efficiency - Wikipedia

    en.wikipedia.org/wiki/Annual_fuel_utilization...

    The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few' or 'A'-'F'-'U'-'E') is a thermal efficiency measure of space-heating furnaces and boilers.The AFUE differs from the true 'thermal efficiency' in that it is not a steady-state, peak measure of conversion efficiency, but instead attempts to represent the actual, season-long, average efficiency of that piece of equipment ...

  3. 2024 Guide To Energy Efficient Home Improvement Tax Credits - AOL

    www.aol.com/2024-guide-energy-efficient-home...

    There’s also a $2,000 credit for heat pumps, heat pump water heaters and biomass stoves and boilers that meet or exceed the CEE highest efficiency tier and operate at a thermal efficiency rating ...

  4. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    Modern high-efficiency furnaces can be up to 98% efficient and operate without a chimney, with a typical gas furnace being about 80% efficient. [1] Waste gas and heat are mechanically ventilated through either metal flue pipes or polyvinyl chloride (PVC) pipes that can be vented through the side or roof of the structure.

  5. Ceramic heater - Wikipedia

    en.wikipedia.org/wiki/Ceramic_heater

    A ceramic heater as a consumer product is a space heater that generates heat using a heating element of ceramic with a positive temperature coefficient (PTC). [1] [2] [failed verification] Ceramic heaters are usually portable and typically used for heating a room or small office, and are of similar utility to metal-element fan heaters.

  6. Electric boiler - Wikipedia

    en.wikipedia.org/wiki/Electric_boiler

    In a residential setting, an electric boiler is often used as a backup to a house's heating system. During the colder months, heating and hot water is used more frequently. This type of boiler will provide additional heating and hot water to a home. [3] Some types of boilers aren't used for heating, but for other purposes.

  7. Energy Conservation Program for Consumer Products - Wikipedia

    en.wikipedia.org/wiki/Energy_Conservation...

    As established by NEPA, the program established "test procedures, labeling, and energy targets for consumer products." [4] The National Energy Conservation Policy Act of 1978 directed the DOE to set minimum efficiency levels for thirteen appliances. Subsequent amendments have expanded the number of appliances under regulatory control and ...

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