Last week we started addressing the question of “why is my furnace always running?” First we showed you how to rule out the simple solutions by troubleshooting your thermostat. Then we looked at reasons why your furnace may be running without heating your home. This week we’ll talk about what could be causing your furnace to keep running even after your set temperature has been reached.

My Furnace Keeps Running and Now I’m Sweating!

Check your furnace’s blower motor. – Furnace function is fairly simple: your heat exchanger warms up, and your blower motor circulates your home’s air over the exchanger to heat the air in your house. You can check to see if it is just the blower running – as opposed to the whole furnace – by feeling the air that is coming out of your registers. If the air feels cool (room temperature), then your blower is still circulating air but your furnace isn’t actively heating it. This could represent a problem with the blower’s limit switch, which can easily be serviced by your Wilmington HVAC technician.

Temperature controls – If it is your furnace that is running, rather than just your blower, your furnace may not be receiving the signal that the desired temperature has been reached. This could be a problem in its relay to the thermostat, or the controls inside the furnace itself. Our Wilmington HVAC technicians are experts at diagnosing your system and providing quick, efficient repairs.

Other Reasons Your Wilmington HVAC May Not Be Functioning Properly

Incorrectly sized system – When it comes to HVAC, bigger isn’t always better. If your system is too big for your home, it could be producing too much heat too quickly, causing your home to be uncomfortably warm. If your system is too small, it will struggle to meet the heating demands and run constantly, leading to premature breakdown and failure.

Single vs. variable speed systems – If your Wilmington HVAC system is more than 12 years old, it likely came with a one-speed blower motor that is either “on” or “off.” Do you find that when your furnace isn’t constantly running some areas of your home get much colder than others? That is because the fan needs to run to properly circulate the warm air throughout your home. Newer systems offer variable-speed units that allow the blower to run at slower, more energy-efficient speeds, saving up to 40% on electricity costs and keeping your home consistently comfortable.

Call Gold Star, Wilmington’s HVAC Experts

Whether your furnace is causing you to sweat or freeze, Gold Star’s professional, dependable technicians are available 24/7 to repair your Wilmington furnace. Most furnace problems can be prevented with routine HVAC maintenance. Don’t let a minor problem turn into a major headache: if your furnace needs a tune-up or repairs, contact Gold Star today.