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Indications Your Furnace is Broken or Underperforming

Maple Grove Furnace Repair & Installation

At some point, your furnace is going to stop performing at the capacity you expect it to. What are the signs that your furnace is not working at maximum capacity? Here are six signs from Minnesota Heating and Air Conditioning to know when it’s time to call out the professionals to replace or repair your furnace.


As a furnace gets older, it makes sense that it would show some wear and tear from usage. The question is, at what point does normal wear and tear become a sign that your furnace needs to be replaced? At Minnesota Heating and Air Conditioning, we recommend that once your furnace reaches twelve years of age, you should either consider replacing it or start saving money for an inevitable replacement down the line. Regular maintenance can extend the life of your furnace past the twelve to fifteen standard years of use, but you do not want to wait until the last minute to have it replaced.


Furnaces tend to be loud and make noise, but there are certain sounds you should listen to that indicate a replacement may be needed. Pops and squeaks are not normal and are telling you there is an internal problem that needs to be resolved.

Rising Heating Bills

Normal wear and tear over the years will cause the efficiency of your furnace to go down, no matter how efficient it was when you bought it. Units that are failing will struggle to maintain the temperature set on the thermostat.


While dust happens, only a certain level is acceptable. At Minnesota Heating and Air Conditioning, we note that if an unusual amount of dust is accruing on your vents or throughout your home, it is going to cause the efficiency of your furnace to go down.

Cold Air

Your furnace is supposed to blow out warm air, so if you notice it starting to blow out chilly air, it is a sign your furnace isn’t functioning correctly. The chilly air could be caused by a blower issue or several other problems.

Pilot Light Color Change

The pilot light on your furnace is supposed to be blue. If it has turned yellow, that may indicate that carbon monoxide is leaking from the heat exchangers.

We want you to feel safe in your home and confident that your furnace will do what it needs to do. Contact us today for your furnace repair/replacement needs!