Is your home’s thermostat acting funky? Some issues the HVAC technicians at Bigham’s One Hour Heating & Air Conditioning commonly see include thermostats not displaying anything on the screen, not correctly communicating to your heating and cooling system or not working at all.

To help alleviate some of these issues with your home’s thermostat, the NATE-certified technicians at Bigham’s One Hour Heating & Air Conditioning devised a list of items you can check to determine the problem with a faulty thermostat, as well as some solutions. These solutions will help you determine if the issue is your thermostat or your heating system.

For all of your heating, cooling and indoor air quality needs, contact Bigham’s One Hour Heating & Air Conditioning today for service.

Checking the Thermostat

Here’s a list of items to check on your thermostat. Hopefully, some of these easy fixes will get your thermostat working again.

1. Is the power on?

Checking if the thermostat has power should be the first thing you do. This task involves making sure the thermostat is correctly wired and that no wires have been corroded or damaged.

2. Check for dust or dirt

Dirty wires can prevent your thermostat from working properly. Remove the cover of your thermostat, and clean the wires of any dust. Using a compressed air sprayer will help you clean the wires with care.

3. Check for loose or corroded wires

  • Replace corroded wires
  • Tighten up loose wires

See if this gets your thermostat to work again.

4. Inconvenient placing of thermostat

The thermostat detects the temperature of the room and compares it to the desired temperature setting. If the room is too warm or too cold, the thermostat signals for heat or cooling depending on the temperature it senses.

Your thermostat should be placed in an area with a neutral temperature, meaning the environment does not affect the surrounding temperature. The kitchen, for example, would be a bad place for your thermostat, as cooking can cause the thermostat to read temperatures hotter than what they are because of the heat from cooking. Make sure your thermostat is in an area that is well insulated.

5. Make sure the thermostat is leveled

Making sure your thermostat is not slanted or tilted might seem like a small detail, but it’s crucial for your thermostat to be leveled for it to function properly. Your thermostat should be mounted 5 feet from the ground.

6. Modify by five degrees

  • Set the thermostat five degrees warmer during the heating season
  • Set the thermostat five degrees cooler during the cooling season

Check that your heating or cooling system turns on after this adjustment.

7. Is your thermostat on the correct “heat” or “cool” setting?

Check the setting on your thermostat and also test the circuit breaker to ensure the switch for your heating and cooling unit is set to “on.”

If your air conditioner or furnace is always blowing air, your thermostat’s fan setting may be set to “on.” It should be set to “auto,” which means the blower will only blow air out of the vents when the air conditioning or furnace cools and heats the air respectively.

Troubleshooting Your Thermostat

Why is my thermostat’s display blank?

  • Replace the batteries (see the next question if this doesn’t work)
  • Flip the AC/furnace switch on your circuit breaker to “off” then back “on”
  • Reset the thermostat – this can be done by flipping the switch from “off” to “heat” continuously

Why is my thermostat not working after changing batteries?

  • Check to see if the batteries were placed correctly
  • Check the voltage of your thermostat
  • Check the breaker. Tripped breakers are a common reason thermostats stop working

If your thermostat isn’t working after you’ve checked the batteries and breaker, consider upgrading to a smart, or programmable, thermostat. You can buy a replacement thermostat at any home improvement store, or contact an HVAC company to install one for you.

I can hear the fan running, but my thermostat still won’t work

If this is the case, the thermostat is the issue, not your HVAC equipment. The best option is installing a new thermostat.

My heating, cooling or fan runs constantly

  • Before doing anything, turn off your heating or cooling unit
  • Check connections to make sure nothing has short circuited
  • Set the fan to “auto.” When the fan is on “auto,” it will work in accordance with your heating and cooling settings and won’t run constantly. 

Contact Bigham’s for Thermostat Repair and Installation

We hope this covers some issues you might have with your thermostat. Call Bigham’s One Hour Heating and Air Conditioning for a better walk through of your home’s heating and cooling adjustments. If your thermostat is the issue, we can replace or repair it.

The issue may not be your thermostat at all and could likely be a mechanical problem with your heating, ventilation and cooling unit. If the problem is with your home’s inability to cool or heat, it could be an issue with your furnace, AC, heat pump or ventilation.

Bigham’s One Hour Heating & Air Conditioning is a simple phone call away. Call us today at 877-894-2577 or request an appointment online.