it is calibrated specifically for natural gas applications

Unlike most models in the MEP-4000 series

and Comfortmaker air handlers and electric heating units

Engineered for specialized HVAC furnace maintenance

Carrier HH18HB016 Thermostat 324846-701 it is calibrated specifically forThe Carrier HH18HB016 Freeze Thermostat is a critical OEM HVAC safety control designed to prevent catastrophic equipment failure caused by low temperature conditions. As a factory authorized part, this freeze protection switch monitors the evaporator coil or water lines, automatically breaking the circuit to the compressor or activating the heating cycle when temperatures drop below the calibrated set point. Engineered for Carrier, Bryant, and Payne