It triggers your wall heater once the thermostat detects freezing room temperatures. It won’t heat the room back up, only keep it above freezing. How much you can expect to spend on a wall heater.

Gas wall heaters: Mounted directly on the wall and typically heat one room at a time; ... With a portable electric heater, make sure that the unit is equipped with a thermostat, ...

It triggers your wall heater once the thermostat detects freezing room temperatures. It won’t heat the room back up, only keep it above freezing. How much you can expect to spend on a wall heater.

In this look at patio heater options, Consumer Reports helps you decide whether an electric, propane, or natural gas model is right for you.