Why is My Furnace Blowing Cold Air?

With the breeze getting cooler and cooler, you’re expecting your furnace to provide you warmth for a more comfortable feel inside your home. Bu, without any notice, your furnace starts blowing cool air! That’s not right! But what could have caused such troublesome situation?

Here are a few possible explanations as to why your furnace is blowing cold air instead of warm air:

  1. There’s a problem with your thermostat.

A thermostat is a component which senses system temperature to ensure that it is maintained at a desired level. Thermostats are the primary control for both heating and cooling systems.

Thermostats for heating systems respond when there is a change in pressure due to the change in temperature. An operational thermostat would only allow the release of air when the temperature is hot enough. If you have a problem with your thermostat, controlling when the air is released gets harder.

But before concluding that your thermostat is broken, first, make sure that your control is not set to “auto” as this would allow the release of air even if it is not yet warm. Ensure that your thermostat control is set to “on”.

  1. Your air filter is clogged.

Air filters make sure that the quality of air that is released by your heating system is good. Over time, dust will accumulate in your air filters. It is recommended that you clean your air filters regularly.

If you don’t clean your air filters, the accumulated dust will clog the filters. Not only will this decrease the quality of air that is released by your heating system, but it will also restrict the airflow into your system, which will cause the overheating of the system itself. To prevent unfortunate events, most heating systems are designed to stop heating air. Your system would then be blowing cold air that is potentially filled with dust particles and allergens.

  1. Your duct work has leaks or connection problems.

Ducts are tubes that allow air to be distributed from your furnace to the different parts of your home. If your ducts have leaks, or if there are connection problems with your ducts, then warm air will escape before reaching the desired room.

Not only will this scenario cause discomfort, it would also cause your energy bills to go through the roof!

For proper inspection of your system to find out why your furnace is blowing cool air, seek professional help.

Aside from these three most common reasons why your furnace may be blowing cool air, there are many other possibilities. To be able to find out the exact reason for your furnace problems, get help from the professionals.

All Year will be able to give you professional inspection services for your heating system, as well as for the identification and execution of the right remedy or repair needed to correct your problem. All Year AH could provide topnotch installation, inspection, maintenance, and repair of heating, ventilating, and cooling systems.

For all your HVAC needs, All Year is here for you!