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Premier Heating & Air Blog

5 Common Thermostat Problems

HVAC technician testing voltage on a mercury thermostat.

When something’s amiss with the temperature in your home, most homeowners assume that something is wrong with their HVAC system. However, there are certain things that can go wrong that can be attributed to the system’s thermostat.

The thermostat is like the “brain” of your HVAC system, controlling the whole system. So it makes sense that when things go awry, the brain behind the system could be the cause. Even if you have a “smart” thermostat, sometimes things go wrong that cause them to be not-so-smart.

Let’s take a look at 5 things that can go wrong with your HVAC system’s thermostat and what that problem would look like in your home. That way, you can call us for thermostat repair in Dublin, GA when something’s up.

1. Thermostat Won’t Reach the Correct Temperature

Thermostats use temperature sensors to tell the HVAC system when to turn on and off. Eventually, dust and dirt will make their way into your thermostat’s housing and wreak havoc by blocking those sensors. A gentle cleaning is a DIY remedy that should alleviate the problem. If this doesn’t help, the sensors could be damaged which will require help from a professional.

2. HVAC Systems Keep Running

Your thermostat should be able to tell your AC to turn off when it reaches the set temperature. If it feels plenty cool in your home and the AC keeps running, it’s likely that the thermostat isn’t able to notify the system to turn off. Try checking the actual temperature of your home and comparing it with the set temperature. If there’s a discrepancy, you probably need to replace the thermostat.

3. Thermostat Placement Is Wrong

To correctly and accurately gauge the ambient temperature, a thermostat must be positioned correctly in the home when it’s installed. To ensure an accurate reading, don’t DIY install a new thermostat—even something this “simple” must be left to the pros. They’ll know not to install it near sources of heat or cold such as the kitchen or a light-filled window and ensure its correct placement.

4. Thermostat Won’t Turn On

Today’s smart and Wi-Fi thermostats are hardwired to your home’s electrical system. However, older thermostats still use batteries for power. If your battery-powered thermostat won’t turn on, try changing the batteries. 

If that doesn’t work, make sure that the thermostat is set to the correct mode. If you want to turn on the AC and the thermostat is set to heat, it’s obviously not going to turn on. Mistakes happen and someone in your household might’ve inadvertently switched the settings.

5. DIY Installation

We realize it’s the YouTube age and DIY tutorials are all the rage. However, unless you’re familiar with working with electricity and wiring, thermostat installation is best left to the professionals. A single misstep in the installation process can cause that amazing new smart thermostat you purchased and installed yourself to not work at all.

When your home’s thermostat needs a repair service, contact the team known for its unparalleled service. That’s us!

Contact Premier Heating & Air for thermostat repair in Dublin, GA and Experience the Premier Difference.

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