Pay in 4 interest-free payments of $6.78 Learn more
Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
Re-use or replace your existing pressure switch separately
including fan timing
For hot water (hydronic) systems
always verify your fan motor's specs against the original nameplate
By optimizing the phase shift between the start and run windings
MARS 32621 Crankcase Heater 320788-702 Re-use or replace your existingExperienced HVAC contractors understand that protecting the compressor from liquid slugging is non negotiable. The MARS 32621 Crankcase Heater is a heavy duty, 240V 50W belt style heater engineered to maintain optimal lubricant temperature during the off cycle. By keeping the crankcase oil warmer than the rest of the system, this belly band heater effectively prevents refrigerant migration, ensuring that the compressor startup is smooth and the