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Now it is more common to light a burner electrically, but gas pilot lights are still used when a high energy ignition source is necessary, as in when lighting a large burner. A United States patent was filed May 13, 1922, for a "safety gas-control system" by two employees of the Newark, New Jersey–based Public Service Gas Company, Conrad ...
At the time, gas central heating had yet to be developed, so people relied on burning coal or wood as their main source of heating. [8] [9]Parker felt that the fireplace was not enough to keep her and her home warm during the cold New Jersey winter, and designed the first gas furnace that was powered by natural gas and the first heating system to contain individually controlled air ducts that ...
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 ...
A furnace can be lit by a small pilot flame or in some older models, by hand. Most pilot flames nowadays are lit by an ignition transformer (much like a car's spark plugs). The pilot flame in turn lights up the main flame. The pilot flame uses natural gas while the main flame can use both diesel and natural gas. When using liquid fuels, an ...
By 2008, a report by the United States Department of Energy ranked the firm as fifth in the US in the central air conditioner and heat pump market with a 12% market share (behind UTC/Carrier with 27%, both Goodman/Amana and American Standard/Trane with 14% and Lennox with 12%), while in the residential gas furnace market as of 2008, the company ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 February 2025. American multinational home improvement supplies retailing company The Home Depot, Inc. A Home Depot in Onalaska, Wisconsin Company type Public Traded as NYSE: HD DJIA component S&P 100 component S&P 500 component Industry Retail (home improvement) Founded February 6, 1978 ; 47 years ...