Central AC systems contain more than just coils, ducts and a filter.
While all of these components are essential to an AC system’s performance, an equally important component is the thermostat sensor.
If it fails, you won’t have control over your home’s indoor temperature. You can adjust the thermostat, but a faulty sensor will prevent it from responding with the appropriate cooling actions.
What Is a Thermostat Sensor?
Also known as an air conditioning sensor, a thermostat sensor is a component in central AC systems that is designed to measure the ambient air temperature. It works in conjunction with a thermostat to provide control over your home’s indoor temperature.
When you set your thermostat to the desired temperature, your AC system will run until that temperature is reached. The thermostat sensor allows your AC system to determine when this temperature has been reached. It measures the ambient air temperature while sending this information to the thermostat.
Some thermostats have a built-in sensor, whereas others have a remote sensor.
With a built-in sensor, ambient air temperature is measured at the location of the thermostat. If your thermostat has a remote sensor, on the other hand, you can place it in a different area.
Regardless, all thermostat sensors work by measuring the ambient air temperature inside your home.
Signs of Faulty Thermostat Sensor
How do you know if your AC system has a faulty thermostat sensor?
Thermostats fail when they are unable to accurately measure the temperature of the air.
Therefore, failure usually results in the AC system turning off prematurely or running for an extended period. Alternatively, your AC system may simply not turn on – even if you lowered the thermostat.
You can also check the temperature reading on your thermostat.
Thermostats, of course, display the temperature identified by the sensor. If the sensor fails, your thermostat may not display a temperature, or it may display a temperature that’s higher or lower than the actual ambient temperature.
Proper Placement Matters
Thermostat sensors must be placed in the right area to ensure an accurate temperature reading.
If you place it in the attic, for example, it may “think” your home is warmer than it really is. This can occur if your thermostat sensor is placed in direct sunlight as well.
Instead, place the thermostat in a shaded area in or near the center of your home’s interior.
If you are experiencing a problem with your air conditioning or heating call us at 512-336-1431 to schedule an appointment. We’ll be glad to come out and take a look at the issue.
1431-183 A/C & Heating proudly serves Round Rock, Georgetown, Cedar Park, Pflugerville, Leander, Liberty Hill, and North Austin.
