No matter the brand or model, most homeowners face furnace problems at one time or another, due to normal wear and tear. And while it’s not possible to prevent them all, there are things you can do to help avoid some of them. The Sabre Plumbing, Heating & Air Conditioning experts cover what causes the most common furnace malfunctions and how you can protect your system.

No Heat

Learn how to avoid common furnace problems with the help of SabreHeat loss can be caused by a number of things, but most often it’s a lack of maintenance. Schedule an annual Clean & Tune to keep your system clean and running efficiently. Maintenance appointments are also the perfect opportunity for our technicians to find and fix problems before they get worse and lead to no heat emergencies. Sign up for our Sabre Blue Maintenance Program and you’ll never miss a preventive appointment.

Another possible cause of heat loss is a broken or unresponsive thermostat, often due to dead batteries. Replace them and make sure the thermostat itself is switched “on.” We recommend replacing your batteries twice a year—when you adjust your clocks for Daylight Savings—to avoid an unnecessary heat interruption.

No Airflow

If airflow seems stifled or stopped altogether, even though your furnace is running, check your air filter. A dirty air filter—full of dust and dander—blocks airflow and makes your home feel colder. A clogged filter also makes your system work a lot harder to move air, so you’ll likely have higher energy bills and a breakdown in the near future.

To prevent this from happening, replace (or clean) your air filters at the recommended time:

  • Standard 1-3” filters: every month or more often if you have allergies or pets in the home
  • Media filters: every three to six months, depending on the filter’s efficiency
  • High-efficiency particulate air (HEPA) filter: every six months to a year, depending on the exact filter

Not sure which filter type you have or how often to replace or clean it? Just ask—our technicians are happy to help you.

Frequent On/Off Cycling

Even though it’s working, a furnace that cycles on and off too frequently is in trouble. It’s a sign that your system is working double time to keep up with your thermostat and not operating correctly.

It’s only a matter of time before your energy bills go up and your system shorts out. And it means your system likely won’t last its full lifespan because it’s not working as it should.
To prevent short cycling:

  • Replace air filters regularly to keep air flowing
  • Keep all vents and registers open, even in rooms you don’t use often
  • Make sure your thermostat isn’t located near a heat source that creates a false reading
  • Ensure your exhaust vent (often on the roof) isn’t blocked by snow, ice, leaves, or an animal’s nest
  • Have a professional technician check that your furnace is the correct size for your home

Need Furnace Help? We’ve Got You Covered

Have questions? The expert Bryant® technicians here at Sabre are happy to share their knowledge. We already do in this monthly blog—read other posts about what you should do if your furnace breaks down and how you can fix certain HVAC issues yourself. Give us a call or contact us whenever you need a little extra help.