About the Mars Condenser Fan Cycling High-Pressure Switch, Normally Closed, Open on Pressure Rise at 180, Auto Resets at 240 (43370)
Buy now and get the MARS 43370 FAN CYCLING PRESSURE SWITCH online at PlumbersStock. A pressure switch senses negative pressure in a furnace and shuts it down as a safety measure against harmful fumes and gas leaks. It's easy to replace. Mars is a trusted HVAC brand known for quality manufacturing.