White-Rodgers 1F78-144 Thermostat

White-Rodgers 1F78-144 Thermostat is a dependable non-programmable thermostat designed for 1-heat/1-cool operation, ideal for conventional furnaces and heat pumps. It supports power via battery (30V AC) or 24V AC hardwire at 50/60 Hz, giving flexible installation options. Its rectangular horizontal cover houses a compact 1.2 square inch display and simple, manual controls with a set point range from 45 to 90°F and a current display of 32 to 99°F.

Thermostat terminals RC, RH, W, Y, O, B, G enable versatile wiring for most systems. With a 1 to 1.5 Amp load rating and a temperature operating range of 32 to 105°F, this unit delivers reliable comfort control. It is compatible with gas, oil, electric, and millivolt systems and meets NEC Class II standards. Humidity tolerance up to 90% non-condensing ensures stable performance in typical home environments.

• Non-programmable, 1-heat/1-cool operation for conventional and heat pump systems
• 24V AC hardwired or 30V AC battery power options
• 1-stage control with RC, RH, W, Y, O, B, G terminals
• Temperature range: set point 45–90°F; display shows 32–99°F
• Compact rectangular horizontal cover; dimensions 5-1/8" W × 1-1/8" D × 3-13/16" H; 1.2 in² display
• 1–1.5 Amp load rating; NEC Class II compliant
• Humidity up to 90% non-condensing; compatible with gas, oil, electric, and millivolt systems