White-rodgers 1F79-111 Non-programmable Heat Pump Thermostat

Product Description

The WHITE-RODGERS 1F79-111 is a non-programmable heat pump thermostat designed for residential two-stage heating and one-stage cooling systems. Part of the 70 Series line, it operates on hardwired 20 to 30 volts AC power with a battery backup to retain settings during outages. The large backlit display provides clear temperature readings, and the adjustable room temperature calibration allows field correction without additional tools. It is intended as a direct upgrade from mechanical thermostats and does not require a new wall plate in most retrofit applications. Licensed HVAC technicians handle the typical installation.

This thermostat is suited for residential heat pump systems configured for two-stage heat and one-stage cool operation. Its compatibility with standard low-voltage wiring makes it a practical replacement option in retrofit projects where the existing wall plate can be reused. The backlit display and straightforward interface make it appropriate for installations in utility rooms, hallways, or any standard interior wall location.

Key Features

• Non-programmable operation for straightforward temperature control without scheduling complexity
• Supports two-stage heating and one-stage cooling heat pump configurations
• Hardwired 20 to 30 volts AC operation with battery backup for settings retention
• Large backlit electronic display for easy temperature reading in low-light conditions
• Adjustable room temperature calibration for field accuracy correction
• Designed to retrofit over existing wall plates, reducing install time

Compatibility

Designed as an OEM-style replacement for residential heat pump systems requiring a non-programmable, low-voltage thermostat with two-stage heat and one-stage cool control.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with local codes and the manufacturer wiring diagram. Always disconnect power to the air handler and outdoor unit before removing the existing thermostat or making any wiring connections. Verify system voltage is within the 20 to 30 volts AC operating range before energizing. Install batteries before powering up the system to ensure backup functionality is active from initial startup.