4 Reasons Your Furnace Is Blowing Cold Air

Oct 19, 2022 | HVAC

During the colder months, the last thing you want to deal with is a furnace or heat pump blowing cold air instead of hot air. An HVAC and refrigeration maintenance technician reveals four possible reasons behind this issue to help you determine the right course of action.

Furnace Is Blowing Cold Air

1. The Thermostat Is Set Incorrectly

The thermostat is the first place you should look for errors. Especially when the season transitions from summer to fall, it is fairly easy to have your thermostat set incorrectly. So if you feel that your vents are blowing cold air, it might be possible that you failed to change the thermostat setting when putting your air conditioner away for the fall.

2. The Air Filter Is Filthy

Because the air filter catches dust and debris circulating inside your home, it is crucial that you replace it regularly. Apart from compromising your indoor air quality, a clogged air filter can limit the airflow to your furnace, causing it to overheat and turn off. Then, the heater puffing out cold air is all you are going to get.

3. The Condensate Line Is Clogged

High-performance furnace systems feature condensate lines that transport water away from the equipment. A clogged condensate line can prevent the furnace from igniting. This means only cold air will come through the air vents.

4. The Air Ducts Are Leaking

If your air ducts have leaks or disconnections, then all the warm air will escape before making it through the vents. Sometimes a leaky air duct is caused by old age and other times a small animal gnawed at it.

Have a professional inspect of your system to find problem areas. As a premier heating and air conditioning company, A/C and Refrigeration can help you with just that. We also specialize in commercial refrigeration installation and maintenance. Call (602) 488-7161 or fill out our online form to request a quote on any of our services.