This model has been designed to be especially user-friendly and features a simple and precise round that's been celebrated for its ease of use and precision. Mercury-free and featuring a decorative covering ring to cover surrounding wall marks, the round heat only manual thermostat is a modern classic that has earned its distinction as a top end thermostat. The CT87K Honeywell thermostat is compatible with heating only systems including: forced air (gas, oil and electric), hot water and steam, heat pumps without backup.
Mercury-free thermostat with simple worry-free operation
Mercury-free thermostat with simple worry-free operation
Honeywell's classic round design, worlds most popular thermostat
Precise temperature control for heat only systems
Classic round styling
Decorative wall cover ring included, hides wall marks from previous thermostat