4 Reasons Why Your Furnace Isn't Blowing Cold Air

Posted on: 8 October 2021

When you turn on your furnace, you expect it to pump out hot air to warm up your home. If you turned your furnace on and found that cold air was coming out of your vents, various issues could be causing this to occur.

Reason #1: Thermostat

If your furnace isn't blowing out warm air, check and ensure that someone didn't mess with the thermostat. Confirm that it is set to heat and not to the fan. Then, raise or lower the temperature a couple of degrees. If nothing changes, your thermostat may need to be replaced, or it may just need a new set of batteries if it is hardwired. This is always the first thing you should check.

Reason #2: Week Pilot Light

If you have an older gas furnace with a pilot light, check and see if the pilot light is on. If the pilot light is out, you will want to call a heating specialist to come and relight the pilot light. Often, just relighting the light is all you need to get your furnace going again. If you can't tell if the pilot light is on or you are not sure if the gas is appropriately flowing, that is another situation in which you should call in a specialist.

Reason #3: Dirty Air Filter

If your air filter has not been changed in ages, it can hamper the performance of your entire heater. Your entire heater may not function properly when the air filter is over-clogged with dirt and debris. You may still get a little air coming in, but not enough air to heat up your home.

All you have to do in this case is swap out the old air filter for a new one, which is a simple task you can do yourself or allow a professional to handle for you.

Reason #4: Low Fuel

Next, you could not have enough fuel to run your furnace. You will want to have a professional inspect your fuel line and ensure that the fuel line is not compromised in any way. A leaking fuel line is a very unsafe situation that you will want to fix right away. Or it could be an issue with the gas supply, which a professional will be able to figure out for you.

Reason #5: Ductwork

Finally, the ductwork could be damaged. If the ductwork gets cracks or holes in it, which does happen naturally over time, and the air is leaking out, the air that is making it to your home may not feel that warm anymore, as cool air mixes with the warm air produced by your furnace as it travels through the ductwork. Leaks in the ductwork can also cause the airflow to be weak as well.

If your furnace isn't blowing out hot or warm air, one of the above issues may be at play. When in doubt, bring in a heating service to help you figure out the problem and the solution to that problem.


Making Your Customers Comfortable

Starting a business is a monumental accomplishment. My mom and I have talked about opening a restaurant in the past. However, we haven’t ever worked up enough courage to turn our dreams into a reality. I admire anyone who has the nerve to risk financial security in order to become an entrepreneur. I do know, however, that if you’re beginning a new business establishment, one of your goals should be to make your customers comfortable as they shop around. You don't want them to get too hot, or too cold. Depending on where you live, this objective might be especially important during the hot summer months. On this blog, you will discover the best types of HVAC units to install in business establishments. Enjoy!