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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]
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 ...
American Residential Services (ARS) is a United States network of plumbing, and home and commercial heating and air conditioning businesses, operating under the trade name ARS/Rescue Rooter. The trade name came from the acquisition and merging of ARS and Rescue Rooter by their then-parent company ServiceMaster .
Plumbing systems also service air distribution/control, and therefore contribute to the mechanical part of MEP. Plumbing for HVAC systems involves the transfer of coolant, pressurized air, water, and occasionally other substances. Ducting for air transfer may also be consider plumbing, but is generally installed by different tradespeople. [11]
The estimator even breaks the repair down into parts and labor costs. Another cool feature of the RepairPal is that you can view common problems with your car, which may help you prepare future ...
Vertiv began as Capitol Refrigeration Industries, established in 1946 by Ralph Liebert (1918–1984) in Columbus, Ohio.Liebert developed the first prototype precision air conditioner in his garage.
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