White-Rodgers 1F85U-42PR Thermostat

White-Rodgers 1F85U-42PR Thermostat is a universal programmable thermostat designed to optimize comfort and energy use across both conventional and heat-pump systems. It offers 7/5+1+1 day programming for precise scheduling, supporting 2-Heat/2-Cool (Conventional) or 4-Heat/1-Cool (Heat Pump) configurations to match your setup.

Power options include battery operation at 30 V AC and 24 V AC hardwire, giving flexible installation across different electrical configurations. The large, clear display (5 in²) and broad temperature range (32–105°F; setpoint 45–99°F) make daily adjustments quick and intuitive, while the rectangular horizontal cover complements most interiors.

• 7/5+1+1 day programmable schedules for weekday and weekend comfort
• 2-Heat/2-Cool (Conventional) or 4-Heat/1-Cool (Heat Pump) compatibility for versatile HVAC control
• Universal programmable thermostat with 24V AC hardwire or 30V AC battery power
• Wide operating and setpoint ranges: 32–105°F ambient; 45–99°F setpoint
• Extensive terminal design: RC, RH, C, W/E, W2, Y, Y2, O/B/6, G, L; supports gas, oil, electric, 3-wire zone valve, and millivolt systems
• Humidity tolerance up to 90% non-condensing for reliable operation