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2. Furnace (central heating) - Wikipedia

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

   The fourth category of furnace is the high-efficiency condensing gas furnace. High efficiency condensing gas furnaces typically achieve between 90% and 98% AFUE. [3] A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as ...

3. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   A condensing boiler Hot water central heating unit, using wood as fuel. A central heating system provides warmth to a number of spaces within a building from one main source of heat. A central heating system has a furnace that converts fuel or electricity to heat.

4. Heating, ventilation, and air conditioning - Wikipedia

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

   Central, "all-air" air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are often installed in North American residences, offices, and public buildings, but are difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. [32] (Minisplit ...

5. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]

6. International Comfort Products - Wikipedia

   en.wikipedia.org/wiki/International_Comfort_Products

   ICP is a Carrier subsidiary. ICP makes oil and gas furnaces, heat pumps, and central air-conditioning systems for residential and commercial customers. [1] It manufacturers, markets, and sells residential heating and cooling systems under the Arcoaire, Comfortmaker, Day & Night, Heil, KeepRite, Lincoln, and Tempstar brands; its commercial units, with up to 25 tons of cooling capacity, are sold ...

7. US power/natgas prices soar as heat wave boosts air ... - AOL

   www.aol.com/finance/us-power-natgas-prices-soar...

   In Texas, power demand hit a record high for a third day in a row. In New England, power prices rose to their highest since January 2018. The United States is expected to use record amounts of ...