Then in 1883, Thomas Edison invented the first electric heater, followed by the patenting of the first thermostat two years later by Warren Johnson. Later that same century, a Scottish man, named James Watt, developed the first working heating system that operated on steam combined with a connection of pipes. However, it’s known that in the early 18th century, Englanders first started using combustion air coming from an outside duct to make interior rooms more comfortable.
For some reason, there’s little to no information as to when and who invented the first furnace filter.
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