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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. House Energy Rating - Wikipedia

    en.wikipedia.org/wiki/House_energy_rating

    The use of this rating scheme was extended to public and commercial sector in 2007 and from 2012 the operational rating is mandatory for both residential and commercial buildings. The rating system consist of a scale ranging from A to E basis, where A represent the most efficient and E represent the least efficient rating.

  4. Energy rating - Wikipedia

    en.wikipedia.org/wiki/Energy_rating

    EnerGuide, labeling and rating of the energy consumption or energy efficiency of specific products used in Canada; Building energy rating; Energy efficiency rating, a score applied to dwellings in the Australian Capital Territory; House Energy Rating, a building's thermal performance for residential homes in Australia

  5. Energy Star - Wikipedia

    en.wikipedia.org/wiki/Energy_Star

    The ratings are used by building and energy managers to evaluate the energy performance of existing buildings and industrial plants. The rating systems are also used by EPA to determine if a building or plant can qualify to earn Energy Star recognition. [40] In 2020 Energy Star released an updated guide for verifying Energy Star certifications ...

  6. Energy-Efficient Home Improvement Tax Credits and ... - AOL

    www.aol.com/5-eco-friendly-home-renovations...

    The energy-efficient home improvement credit offers tax credits of up to $2,000 for heat pumps or biomass stoves or boilers, and up to $1,200 for other energy-efficient property upgrades.

  7. Thermal efficiency - Wikipedia

    en.wikipedia.org/wiki/Thermal_efficiency

    In thermodynamics, the thermal efficiency is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, steam turbine, steam engine, boiler, furnace, refrigerator, ACs etc.

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