The Trane TCONT850AC52UB 4H/3C 7-Day Programmable Thermostat is an advanced temperature control device designed for compatible Trane heat pumps, air conditioners, furnaces, and other HVAC systems. It monitors indoor temperature and automatically adjusts heating and cooling based on user-programmed schedules to maintain consistent comfort. Supporting up to four heating and three coolin... https://www.partshnc.com/tcont850ac52ub-trane-4h3c-7-day-prog-thermostat