Honeywell TP973B2171 Pneumatic Thermostat, RA 1 or 2 Pipe 60–90°F Universal Cover

The Honeywell TP973B2171 is a universal replacement cover for household heating and air conditioning systems with one or two pipes and operating temperatures ranging from 60 to 90 degrees. It is not a programmable thermostat but rather a component designed to work with existing thermostats. While it does not directly control your HVAC system, it protects your thermostat from wear and tear, dust, and other environmental risks. This might help extend the life of your thermostat and keep it running smoothly. Finally, the Honeywell TP973B2171 is a protective cover for your thermostat that prevents harm and extends its life. It is compatible with a number of Honeywell thermostats, heating, and cooling systems.