Programmable Thermostat

This replacement thermostat is compatible with the Resideo T812C1000 and provides reliable temperature control for single-stage heating and cooling systems. Engineered for low-voltage applications between 18-30 VAC, this mechanical, non-programmable unit delivers straightforward operation without complex digital interfaces, making it ideal for facilities requiring dependable climate management without advanced features. The thermostat is housed in a compact, premier white square design measuring approximately 3 1/8 inches high by 3 1/8 inches wide by 7/8 inches deep, allowing for easy installation in standard wall-mounted locations. With a temperature operating range of 50-90 Degrees F, this unit suits most commercial and residential HVAC environments. The snap-acting bimetal mechanism incorporates mercury-free construction for improved safety and environmental compliance while maintaining precise temperature control through positive off positioning and single-pole single-throw switching. Built for conventional heating and cooling systems requiring single-stage 1 heat/1 cool functionality, this replacement thermostat is particularly valuable in retrofit applications where OEM compatibility is essential. The robust mechanical construction eliminates dependency on batteries or complex programming, reducing maintenance requirements and ensuring consistent operation. With a lightweight design at 0.60 pounds, installation and replacement can be completed quickly with minimal disruption to facility operations. This product serves facilities including offices, retail spaces, light commercial buildings, and institutional properties where reliable, cost-effective temperature management is prioritized. The straightforward mechanical operation makes it suitable for applications where facility staff require simple controls without specialized HVAC knowledge.