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Did you know that an unexpected increase in energy bills could actually indicate a need for air filter replacement? It's true! If your bills are climbing lately, check your filter! An overworked HVAC system uses more energy to keep your indoor environment comfortable, leading to higher bills. This happens when a clogged air filter restricts the airflow, forcing your system to work harder than usual.

By: Tara Grant

8 Key Signs It's Time to Change Your Air Filters

May 23rd, 2024

SUMMARY: Is your home feeling stuffy, dusty or triggering allergies more than usual? All of these could be signs of a seemingly insignificant part of your HVAC system: the air filter.  This often-forgotten hero plays a critical role in keeping your HVAC system running smoothly and your indoor air healthy. But how do you know when to change your filter? Don't worry, we've got you. Here are 8 crystal clear signs that your air filter may need to be changed.

5. Higher Than Normal Energy Bills

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Lots of dust! Another sign that your air filter needs replacing is a noticeably dusty home, even after regular cleaning.  An efficient air filter is designed to trap dust particles and prevent them from re-circulating in your home. However, when the air filter becomes clogged, it can no longer trap dust effectively, leading to an increased dust accumulation in your home.

6. DUSTY HOME

While an efficient air filter contributes to a fresh and clean indoor atmosphere, unpleasant odors permeating your home could indicate that your air filter needs replacing. Over time, the filter traps a variety of particles that can produce bad smells when they accumulate. A clean air filter doesn't just ensure efficient system operation but also helps maintain indoor air quality.

7. UNPLEASANT ODORS

How long has it been? The time since your last air filter change serves as a critical indicator of when a replacement is due. Most manufacturers recommend replacing air filters every 90 days for average households, and more frequently for homes with pets or individuals with allergies.

8. IT'S BEEN OVER 90 DAYS

This one should be a no-brainer! But too often people don't even check their filters. Go ahead, check it out, we'll wait. If it's anything but white, it should be replaced. Regularly checking your filter for visible dirt is a simple yet crucial maintenance step that can help save your HVAC system in the long run.

1. Visible Dirt and Clogging

Seeing more sniffles and sneezes around the house? Your clogged air filter could be to blame!  Air filters trap allergy triggers like dust, pollen, and pet dander, but a full filter lets them circulate freely. This can worsen allergies and respiratory symptoms, especially for those with asthma.  If your allergies improve when you leave home, it's probably time to replace your air filter.

2. Increased Allergy or Respiratory Symptoms

Hearing unusual noises coming from your HVAC system can be a sign for a need for an air filter change. These sounds are often a result of the system working harder than usual due to reduced airflow. The struggle to maintain normal operations may manifest as clicking, humming, or even screeching sounds.

3. Unusual Noises

A significant decline in airflow from your HVAC might not be a malfunction in your system-- it could be a sign that your air filter needs to be replaced. Reduced air flow can lead to uncomfortable temperature fluctuations and compromised air quality, impacting both comfort and health. If you're having these issues, try changing your filter before you call your HVAC professional.

4. Reduced Air Flow