Fort Collins Heating & Air Conditioning Blog

Why is My Furnace Blowing Cold Air?


Cold air is a sign that there’s a problem with your furnace. There could be several reasons behind this. Find out what’s causing the issue before things get worse. Once you know the source of the problem, you can determine if DIY solutions will work or if you need to hire pros to fix it.

Incorrect Fan Settings

Believe it or not, something like this often happens. Always check if the thermostat settings are on right. Sometimes, people change the settings by accident. It’s always a good idea to check that before you move on to more complicated fixes. If tinkering with the settings resolves the issue, then you’re in luck. If it doesn’t, the problem is something else.

Faulty Installation

Mistakes during the installation process could result in long-term system problems. One way to prevent that is to hire pros for furnace installation in Loveland, CO. They have the skills, knowledge, and tools to install your furnace properly, without making any mistakes. That way, you won’t have to worry about your unit’s functions being compromised.

Dirty Filter

Is your air filter clogged? A dirty air filter could be one of the reasons why you’ve got cold air blowing from your furnace. How long has it been since the air filter was replaced or cleaned? If you can’t remember, repairing or replacing that filter is long overdue. In some cases, a clogged filter also places additional burden on the system and the other furnace components. Those parts need to work harder because of the clogged filter, which shortens the overall service life of your furnace. You can prevent all those problems just by replacing or cleaning the filter.

Pilot Light

Pilot lights or igniters are used in gas furnaces. They trigger the transformation of natural gas into flame. If your furnace is blowing cold air, the heat may not have kicked on. That’s usually what happens when the pilot light or igniter goes out. Check if that’s the cause of your furnace problems so you can look for the best possible solution as soon as possible.

Fuel Issues

If your gas furnace isn’t getting enough gas supply, that’s another reason why it’s blowing cold air when it should be blowing hot air. If that happens, it’s a fuel problem. Often, once the furnace blows cold air, it shuts down soon after. If you have an electric furnace, replacing any of the faulty components requires the help of a skilled technician. Call a pro.


Fort Collins Heating & Air Conditioning Blog