Your air conditioner relies on an air filter to keep the system’s interior clean and functional. Unfortunately, when the filter is left dirty, it can cause issues for the air conditioner, resulting in less efficient cooling. Here are a few signs your air conditioner’s filter is dirty, and ways you can keep your system in tip-top shape.

How to Know Your AC Filter Is Dirty

1. Lower Airflow

When dust clogs filters, air movement can be significantly reduced or restricted altogether. As a result, your home won’t feel cool when the AC is running, or the air may trickle out of the vents instead of cooling the space quickly.

Keep in mind that while many filters can go three months without cleanings or replacements, homes with large families, multiple pets, or nearby construction projects may need to replace their filters as often as once a month. Nearby wildfires or heavy winds can also contribute to indoor air pollution that clogs filters, so pay attention to changing environmental concerns.

2. High Power Bills

If your air conditioner isn’t working as efficiently due to a clogged filter, the system may stay on longer than normal, which can increase your monthly utility bill. Pay attention to how much it costs to cool your home during the warmer months of the year, and compare the costs to previous years. Focus on the amount of energy your home used, not just the total price of the bill, as energy costs can fluctuate.

3. Increased Allergies

When air filters become clogged, they can allow dust and other airborne contaminants, like pet dander, to remain in the house, aggravating allergies. Dust allergies can cause problems, like itchy, watery eyes, wheezing, or a stuffy nose. If you’ve noticed new or worsening allergies, check the indoor air filter.

If you spot issues with your air conditioning system but replacing the filter doesn’t help, turn to the experts at Windward Air Conditioning on Maui, HI. Since 1996, this family-owned business has helped clients diagnose, troubleshoot, and resolve their air conditioning problems to lower their energy costs and improve indoor comfort. To learn more about their services, visit their website or call at (808) 242-1144.