Carrier Factory Authorized Dealer

Available 24 hours
7 days a week!


Schedule An Appointment
Leave Us A Review

Why is My Heater Blowing Cool Air?

If your heater isn’t delivering warm air, you have a problem that you need addressed. Reliable heating is important during the winters in Stafford, Virginia. Check these common issues to see if you can diagnose your heater’s problem or if you need to call a professional for more help.

Clogged Air Filter

Check the filter in your furnace and make sure it’s clean. You should change this filter at least once every three months. If you haven’t changed the filter recently, a new one may solve your problem. A dirty filter restricts airflow and makes it more difficult for your furnace to function properly. As a result, it wastes energy, strains itself and drives up your heating costs.

Malfunctioning Thermostat

Your thermostat is responsible for communicating the desired temperature to your furnace. If the thermostat isn’t reading your home’s temperature properly or sending the right message to your heater, you’ll find cool air coming through your vents. Check the thermostat to make sure you’ve input the right settings and have it set to heat rather than cool or to just run the fan. If the settings are accurate, call a service technician to inspect your thermostat and furnace more closely.

Disconnected Gas Line

If you have a gas furnace, make sure it’s getting the fuel that it needs. If your gas has been disconnected for any reason, this will prevent the furnace from delivering warm air. Check with your utility company to make sure your gas is on.

Pilot Light is Out

If your furnace has a pilot light, check this flame any time you’re having trouble with your heating. To reset the pilot light, you will typically:

  • Turn the furnace knob to off.
  • Wait five minutes.
  • Turn the furnace knob to pilot and push down.
  • Hold a lighter or match to the pilot opening while pressing the knob until it lights.
  • Turn the furnace knob to on.

If you can’t diagnose the problem with your heater easily using these tips, call a professional service technician. Brennan’s Heating & Air Conditioning can help you address and repair any heating issue. Give us a call at 703-783-0145.

Image provided by Shutterstock

You May Also Like

Poor Indoor Air Quality
January 17, 2023

Duct Cleaning and Other Ways to Improve Your Indoor Air Quality

The average person in Stafford, VA, spends most of their time inside. While you can’t control how clean the air is at… Continue Reading Duct Cleaning and Other Ways to Improve Your Indoor Air Quality

Read More…

Heat Pump
January 8, 2023

Don’t Make These 5 Heat Pump Mistakes in Woodbridge, VA

Using a heat pump effectively is entirely different than using a furnace. Consider these five mistakes people around Woodbridge, VA, make when… Continue Reading Don’t Make These 5 Heat Pump Mistakes in Woodbridge, VA

Read More…

Furnace Making Home Colder
December 13, 2022

Why is My Furnace Making My Home in Oakton, VA, Colder?

No homeowner wants their furnace to develop problems during the coldest period of the year. One of the most common furnace issues… Continue Reading Why is My Furnace Making My Home in Oakton, VA, Colder?

Read More…

Compliance Settings
Increase Font Size
Grayscale
Simplified Font
Underline Links
Highlight Links
Reset
Close