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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. Electric heating - Wikipedia

   en.wikipedia.org/wiki/Electric_heating

   Hence, direct electric heating may now give a similar carbon footprint to gas- or oil-fired heating, but the cost remains higher, though cheaper off-peak tariffs can reduce this effect. To provide heat more efficiently, an electrically driven heat pump can raise the indoor temperature by extracting energy from the ground, the outside air, or ...

4. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   In most settings, heat pumps will reduce CO 2 emissions compared to heating systems powered by fossil fuels. [62] In regions accounting for 70% of world energy consumption, the emissions savings of heat pumps compared with a high-efficiency gas boiler are on average above 45% and reach 80% in countries with cleaner electricity mixes. [4]

5. We compared gas vs. electric stoves in our L.A. test kitchen ...

   www.aol.com/news/gas-stoves-phase-tested-flame...

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6. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Air handling unit, used for heating, cooling, and filtering the air. Air cleaning and filtration removes particles, contaminants, vapors and gases from the air. The filtered and cleaned air then is used in heating, ventilation, and air conditioning. Air cleaning and filtration should be taken in account when protecting our building environments ...

7. Gas vs. Electric Cars: Pros and Cons of Each - AOL

   www.aol.com/gas-vs-electric-cars-pros-170000149.html

   Advantages of an Electric Vehicle EVs have a battery that feeds at least one electric motor that sends torque to the wheels. Like the gas tank on an internal-combustion car, the battery pack ...

8. Convection heater - Wikipedia

   en.wikipedia.org/wiki/Convection_heater

   Convection heaters are commonly classified according to their power source. Electric convection heaters use electricity, while combustion or gas-fired heaters use gas, propane, or any other type of fuel. For the heating element, convection heaters usually use metal coils, nickel-chromium, resistance wire, thermal fluids, or ceramic. [6]

9. Major appliance - Wikipedia

   en.wikipedia.org/wiki/Major_appliance

   A selection of major appliances. A major appliance, also known as a large domestic appliance or large electric appliance or simply a large appliance, large domestic, or large electric, is a non-portable or semi-portable machine used for routine housekeeping tasks such as cooking, washing laundry, or food preservation.