Lennox 46K93 Heat Exchanger 320074-702 this HVAC draft inducer switch

this HVAC draft inducer switch monitors differential pressure to prevent unsafe combustion conditions caused by blocked flues or failing motors

preventing back-feeding and protecting sensitive control boards from voltage spikes

Common causes include a faulty ignitor

or a pressure switch that fails to close during the pre-purge cycle

Lennox 46K93 Heat Exchanger 320074-702 this HVAC draft inducer switchThe Lennox 46K93 Heat Exchanger is a critical genuine OEM replacement part specifically engineered for high performance Lennox HVAC systems. As a veteran technician knows, maintaining the integrity of the combustion cycle depends on a robust furnace heat exchanger. This aluminized steel component is built to withstand high cycle fatigue and thermal stress, ensuring maximum thermal expansion management and efficient heat transfer. Utilizing this Lennox