Lennox 78H11 Thermostat 319852-301 it should be integrated into

it should be integrated into a system with a primary thermostat

Contractors should inspect existing thermal limits and secondary HVAC replacement parts for signs of scorching or fatigue during the swap

Key Benefits for Contractors Full Refrigerant Compatibility: Optimized for use with POE

It maintains a pressure rating of 0-110 PSI for #2 fuel oil (60 SSU) and #4 fuel oil (300 SSU)

and Honeywell P431X-1092

Lennox 78H11 Thermostat 319852-301 it should be integrated intoAs a seasoned technician, you know that a frozen outdoor coil is a quick way to kill system efficiency and stress the compressor. The Lennox 78H11 is a critical heat pump defrost thermostat (L70 35F) designed specifically to regulate the defrost cycle in Lennox heat pump applications. This OEM Lennox replacement part features a fixed temperature range, initiating the defrost sequence when the liquid line or coil temperature drops to 35F and