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Ships within 48 hours · Estimated delivery Sep 19 - Sep 24
with a compact 100mm x 80mm footprint designed for standard electrical enclosures
This valve is designed for HVACR systems using 5/8" piping
allowing the system to restore furnace ignition sequence once safe temperatures are reached
For a 7/8 inch suction line
Marvair 20173A Defrost Control Board 326058-758 with a compact 100mm xThe Marvair 20173A Defrost Control Board is the essential HVAC replacement part designed specifically for Marvair heat pump systems requiring reliable defrost cycle management. As the direct replacement for the legacy 20173 board, this updated component integrates seamlessly into existing control panels to manage evaporator coil icing in low ambient conditions. For technicians performing heat pump troubleshooting, the 20173A provides precise timing
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