The 12500 air pressure switch senses furnace operation, in furnaces with a two speed blower motor. The switch then supplies power to the humidifier accordingly. The owner's manual provides instructions for wiring. 

Also known as part 7021


More Information
Manufacturer General Aire
Product Length 2.600
Product Width 2.550
Product Height 1.600
Product Weight 0.115
Package Length 6.600
Package Width 4.450
Package Height 4.350



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