Home & Commercial Services


A thermostat is a main part of the control system. It senses the main temperature of the house so that the house’s temperature can be kept at or close to the desired temperature. The control unit performs this by turning the cooling and heating systems on or off to maintain the correct temperature. If your thermostat goes out, the entire system can stop working. The problem can also be a control unit for a cooling or heating system or a main component part of an air conditioner or heater. Thermostats can be constructed in many ways and may use a variety of sensors to measure the temperature. The output of the sensor then controls the heating or cooling apparatus. HCS specializes in HVAC work as well as the repair and installation of thermostats. We do all of our work in and around the Birmingham Alabama area. If you are experiencing any problems with a heating and cooling unit in your home of place of business, don’t hesitate to call us at (205) 798-0635. All of the thermostats we install are Energy Star efficient, and can be programmed to fit your lifestyle needs, or company needs.

Troubleshooting Thermostats

There are some quick things you can do yourself to see if your thermostat is the culprit in your central heating and air unit not working correctly or at all. Is your furnace or air conditioner not working and you suspect the thermostat? Here’s a way check it. Check the Temperatures Displayed. If the room temp seems off, check it against another thermometer. A digital thermostat can usually be calibrated.

Calibrate Room Temp

Mercury thermostats cannot be calibrated, but need to be level in order to work correctly.

Check Connections

Make sure all connections have good contact and are tight.

Taking Thermostats out of the Equation

If all your equipment is coming on without the thermostat, then it was the source of the problem.