With a rugged aluminum housing

This assembly is engineered to maintain static pressure integrity and ensure efficient heat exchange cycles within the evaporator coil housing

or non-programmable unit

or clogged filters—the switch breaks the electrical circuit to the gas valve

Nordyne 632677 Crankcase Heater R-22 With a rugged aluminum housingEnsure your compressor remains protected against liquid refrigerant migration with the Nordyne 632677 Crankcase Heater. This 240V 40W heater is a critical preventative measure for HVAC systems operating in fluctuating ambient conditions. By maintaining the oil at a temperature higher than the rest of the circuit, this crankcase heater replacement effectively eliminates the risk of oil slugging and high pressure foaming during startup. Designed for a