If you swapped the suspect 2-wire non-programmable with the known good 2-wire programmable from the bathroom and it works properly, there is no other conclusion. The 2-wire non-programmable is broken.

For anyone conscious of how and when they heat their home, one of the best smart thermostats will give you insights into your energy consumption, allow you to control your heating remotely from your ...

While heating and cooling setups can vary a lot, most US homes rely on some sort of heating, ventilating and air conditioning system (HVAC) to help keep indoor temperatures in check. Your thermostat ...

The $349 Wi-Fi Smart Thermostat with Voice Control is an intriguing new offering from Honeywell. While it is virtually identical to Honeywell's $249 Wi-Fi Smart Thermostat in design and functionality, ...