The Air Over motor housing is designed to be cooled by the fan's own airflow

the HKR-05C features a sequencer-controlled startup to prevent sudden amperage spikes on the electrical grid

which lead to terminal heat exchanger corrosion or pressure switch lockout

The White-Rodgers 767A-377 Ignitor is a heavy-duty silicon carbide hot surface ignitor engineered for high-demand 120V ignition systems

The unit features white color coding for quick field identification and operates with a strict tolerance of +7 degrees F / -8 degrees F

Tjernlund Products PS1503 Switch 322027-701 The Air Over motor housingThe Tjernlund Products PS1503 is a high sensitivity duct pressure switch engineered to automate HVAC accessories by detecting positive air pressure within the supply plenum or trunk lines. As the direct replacement for DFS 221 227, this SPST normally open switch simplifies field installations by eliminating the need for complex interlock wiring with the furnace blower. The PS1503 duct airstat features a snap acting mechanism triggered by a precise