The Lennox Y7758 White-Rodgers 1F56N-444 mechanical thermostat is a dependable, non-programmable temperature control solution designed for universal 1 heat / 1 cool HVAC systems. Built for long-term reliability, this thermostat uses mercury-free snap-action contacts with a protective dust cover to ensure consistent operation and accurate temperature response.

Designed with simplicity in mind, the Y7758 features manual changeover and a built-in bimetal thermometer, making it ideal for homeowners and technicians who prefer straightforward, no-programming operation. Its vibration-resistant design helps maintain stable performance in a wide range of residential and light commercial environments.

The thermostat supports 24-volt, 750 mV, and 3-wire zone applications and can be mounted directly to a wall or junction box for flexible installation. Finished in a classic white housing, it blends easily with most interior settings while delivering proven HVAC control performance from White-Rodgers.

This model is well suited for gas, oil, or electric heating and cooling systems where reliable, mechanical temperature control is required without the complexity of digital or programmable thermostats.