White-Rodgers 1E78-151 Thermostat 5-inch models

5-inch models

maintaining the integrity of the electronic ignition system under heavy thermal cycling

maintaining the long-term accuracy of your proportional control signals

ensuring performance in unconditioned mechanical spaces

this unit serves as the updated cross-reference for the older S1-024-27638-001 model

White-Rodgers 1E78-151 Thermostat 5-inch modelsThe White Rodgers 1E78 151 is a job site staple for contractors looking for a reliable, vertical profile 5 2 day programmable thermostat. This 70 Series economy model is engineered for single stage 1H 1C HVAC systems, providing a seamless digital upgrade for older mechanical units without requiring a common wire (C wire). It operates on 24V AC low voltage systems and is fully compatible with millivolt heating applications, making it a versatile choice