Lennox 74W77 Limit Switch 320788-702 A19ABA-23 is identical to A19ABA-23C

A19ABA-23 is identical to A19ABA-23C

the RTB14 utilizes an adjustable weighted arm to maintain optimal system pressure

the York replacement wheel provides the exact balance and blade pitch required for optimal heat exchange efficiency

technicians should replace this element when the pressure differential exceeds 10 psi or during annual maintenance cycles

Can this motor be used on other furnace brands

Lennox 74W77 Limit Switch 320788-702 A19ABA-23 is identical to A19ABA-23CThe Lennox 74W77 Limit Switch is a critical OEM safety component engineered for precise thermal regulation within Lennox furnaces and air handlers. This L155 30F limit switch is calibrated to open at 155F and automatically reset when the temperature drops by 30F, preventing heat exchanger damage and ensuring safe operational cycles. Designed as a direct Lennox 74W77 replacement, this high limit control utilizes a bimetal sensing element to monitor