In a detached garage mount it on the wall below the heater.
Install thermostat wall heater.
If you have an attached garage mount the thermostat on the common wall between the garage and the house and away from the heated airflow.
It s easiest to mount a thermostat used with a wall heater in the same stud cavity on the opposite side of the stud about five feet above the floor.
Most new thermostat units are compatible with heat pump thermostats baseboard heater thermostats furnace thermostats and boiler thermostats.
If you have two or more heaters in a large room place the thermostat in a central location.
An oversize unit heater cycles too often and wastes energy.
Connect the low voltage wires to the appropriate screw terminals on the new thermostat base if your connections do not match consult the installation diagram in the new thermostat s owner s manual.