For technicians performing zone valve maintenance

facilitating safer diagnostic practices

making it compatible with a wide range of single-phase residential and commercial systems

Will this fix a Code 31 or 32 on a Carrier furnace

EPDM is preferred for its superior heat and chemical resistance

Lennox 14W86 Defrost Thermostat 320788-704 For technicians performing zone valveThe Lennox 14W86 Defrost Thermostat (MFR 100503 06) is a critical OEM replacement part engineered to maintain thermal efficiency in high performance heat pumps and refrigeration systems. This SPST sensing switch operates with a fixed 42F close and 70F open temperature differential, providing precision defrost cycle initiation to prevent harmful frost accumulation on the evaporator coils. Field tested for durability, the 14W86 features 60 inch lead