Can a Dirty Air Filter Cause My Air Conditioner Not to Cool?

Air conditioner blowing cold air

It’s been a warm summer, and that means you probably have run your home’s air conditioner quite a bit. If it isn’t cooling your home as well as you’d like, the best first step is also the easiest – check your filter. Many people wonder, “Can a dirty air filter cause my AC not to cool?” The simple answer is yes – a dirty filter can create several problems that can hinder your unit’s effectiveness. Not to mention, a dirty filter can also lead to premature failure of your system. Experts like those at Degree Heating & Cooling recommend changing your filter monthly for best results.

Dirty filters can cause a whole host of problems for homeowners. First of all, they can cause allergens to build up in your home. When the filter is dirty, allergens can’t get trapped in the filter like they’re supposed to. So, they start building up in your ductwork. The result? The air released into your home every time your air conditioner runs is full of allergens, like pollen, spores, dander – and even bacteria. This leads to poor indoor air quality and can cause you and your family some unpleasant physical symptoms, like stuffiness, sneezing, and itchy eyes.

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As a result of the buildup, a dirty filter will also cause poor cold airflow in your air conditioning system. That cold air will be trapped inside your air conditioner, causing ice to form on its coils. Once that happens, your air conditioner will freeze up and become inoperable. Before your system freezes up completely, however, there will be a few telltale signs you should look out for. Uneven cooling throughout your home is one of them. If you notice some rooms are more difficult to cool than others, while others constantly feel cold, you’ll want to check your AC filter first.

One of the most obvious signs of a blocked, dirty filter is air conditioning system inefficiency. Clogged filters force your system to use more energy to cool your home. And that translates into a higher utility bill. Not to mention, when a dirty filter constantly forces your AC system to work overtime, it causes some significant wear and tear on your unit. And ultimately, that can lead to system failure long before breakdowns or the need for repairs should happen.

Of course, some people don’t change their filters because they’re not sure where the filter is located, or they’re unsure of how to actually change it. That should never be a worry, and it doesn’t have to be – when you turn to the cooling professionals at Degree to help. Our expert technicians will be able to show you how to locate your filter and change it out. Or, we’re happy to come change your AC filter for you, whenever needed.

Degree Heating & Cooling can help you save money while improving your comfort. If you need AC maintenance, including air filter cleaning or replacement, count on us to meet your needs. Simply give us a call at (860) 633-6122, and we’ll be more than happy to assist you.

4 thoughts on “Can a Dirty Air Filter Cause My Air Conditioner Not to Cool?

  1. Dirty air filters can cause several problems such as restrict air flow, cooling issue, and health problems. So, we should clean or replace after fix interval of time. Thanks for the valuable information.

  2. Dirty filters can cause a whole host of problems for homeowners. First of all, they can cause allergens to build up in our home. So, we should clean or replace after fix interval of time. Thanks for the great article.

  3. How long after I change the filter should I see a drop in the temp inside? I have my thermostat set at 75 and it is 78. The filter was in dire need of replacing and I got it done. My dad owned a heating and AC business and always had me taken care of but passed away in September. I checked the unit outside, it is running, no lines appear to be frozen. It has been about an hour and hasn’t even dropped a degree yet. so I am just curious how long I should wait before having someone come out and check my system. Everything seems to be running k. Cool air is coming from the vents too.

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