Location of Room Thermostats

The location of the room thermostat is very important to the efficient operation of the heating and/or cooling system. If the room thermostat is improperly located, it will often call for heat or cool air when neither is necessary. It is therefore important to locate the thermostat where it will measure the actual temperature conditions of the space.

The following recommendations are offered as a guide for the proper location of a room thermostat:

1. Never locate the thermostat on the interior surface of an outside wall. Outside walls are subject to temperature extremes caused by weather changes. Always locate the thermostat on a suitable inside partition.
2. Never locate the thermostat in the path of warm or cold air drafts. The thermostat should not be placed opposite warm air outlets or near a window or an outside door.
3. Never locate the thermostat where it will be subjected to the direct rays of the sun or other forms of heat radiation.
Fireplaces, table lamps, and floor lamps are common sources of this type of heat.

When you select a location for the room thermostat on an inside wall, make certain that you are not placing it over a warm air duct, steam pipe, or hot-water pipe. The warmth from these ducts or pipes will interfere with the operation of the thermostat.

For the most satisfactory operation, locate the room thermostat about 5 feet above the floor on an inside wall where there is good natural air circulation and where the thermostat will be exposed to average room temperatures.