Air Pressure Switches

This is a BRAND NEW Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Part # is 12W53 (also 12W5301 20293411 R20293411 & Honeywell # IS20151-3439) & i

This is a BRAND NEW OEM Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Part # is 57W83 (also57W8301 ) & the Honeywell # is IS20344-5604. It is rate

This is a BRAND NEW OEM Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Part # is 49L90 (also49L9001 ) & the Honeywell # is IS20100-3072. It is rate

This is a BRAND NEW Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Part # is 57M67 (also 57M6701 20293416 & Honeywell # IS22171091S5083) & it is ra

This is a BRAND NEW OEM Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Part # is 49L91 (also49L9101 ) & the Honeywell # is IS20100-3073. It is rate

This is a BRAND NEW Lennox/Armstrong/Ducane Furnace Air Pressure Switch. The Lennox/Armstrong/Ducane part # is R45696-002 (also part # 45696-002) and the Honeywe

This is a BRAND NEW Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Part # is 92L21 (also 92L2101 20293412 & Honeywell # IS20151-3440) & it is rated

This is a BRAND NEW OEM Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Lennox/Armstrong/Ducane part # is 52M40 (also 52M4001) and the Honeywell par

This is a BRAND NEW OEM Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Part # is 80W57 (also 10324709 & 103247-09 ) & the Honeywell # is 9371VO-HS-

This is a BRAND NEW Lennox/Armstrong/Ducane Gas Furnace 2-Stage Air Pressure Switch. The Part # is R102613-02 (also 9370DO-HD-0004 ). One switch is rated at .45"

This is a BRAND NEW OEM Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Part # is 57M66 (also57M6601 ) & the Honeywell # is IS22141081S5082. It is r

This is a BRAND NEW Lennox/Armstrong/Ducane Gas Furnace 2-Stage Air Pressure Switch. The Part # is 63W40 (also 63W4001 & Honeywell # 9370VO-HD-0001). One switch