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AC Issues: Is It Your Air Filter & How To Fix It

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You may not pay attention to your air conditioning system too much, especially if everything is working fine. But at some point, you may begin to notice a few signs that could be telling you that it is time to change your air filter. The following guide will help you recognize faulty air filter signs and help you resolve the issue as well. 

Signs Of A Bad Air Filter

You need to look out for the following signs:

Unwanted Particles

One of the most important functions of the air filter is to keep pollen and other unwanted particles from reaching your home or traveling through your air conditioning system. For one, some of the particles that your air filter blocks could damage sensitive compartments within your system. The damage may be very small or may not show its effect immediately.

But, you can feel unwanted particles coming into your home. Some of these particles could be pollen, which may cause allergy-related attacks. There could also be an accumulation of dust in your home or carpet that is more than what you usually expect. 

High Energy Bill 

Your air filter could also clog up to the point where it is hard to get air through. Your air filter keeps particles out, but lets air flow through freely. A clogged air filter will make it harder for your air conditioning system to push air throughout your home. That means that it will take more power to make your home warm or cool. The excess power usage will show up in your energy bill. Or, you may just notice that you have to put the setting of your air conditioning system higher or lower than normal to get the expected results. 

You can talk to your air conditioning repair specialist about your suspicions, as he or she can help you confirm these symptoms.

Replacing Your Air Filter On Your Own

You will need the following:

  • Your owner's manual or repair guide
  • Safety gloves and glasses
  • A new air filter that specifically fits your air conditioning system
  • Screwdriver set
  • A ladder, if necessary


  1. Locate the air filter hatch, which is usually in the main air duct in your home. You can use your owner's manual to help you locate it.
  2. Use your ladder to reach the hatch. 
  3. Put gloves and glasses on for your own protection. There may be particles that could fall when you open the hatch.
  4. Use your screwdriver to open the hatch. 
  5. Remove the air filter, and replace it with your new one. 
  6. Reattach the hatch, and try your air conditioner. 

This should have fixed your issue. But, do not hesitate to talk to your air conditioning system repair specialist (such as King Plumbing and Heating) if you feel uncomfortable with any of the aforementioned steps.