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How Often Should You Change HVAC Filters?

Apart from hiring a heating contractor in Tucson, AZ, sometimes, the best thing you can do to get your unit in optimal condition again is to clean or change the air filters. They are a vital component in any forced-air HVAC system. Cleaning them not only ensures you benefit from cleaner air but also keeps your heater and coolers in working order and helps you keep your energy bills low. But, what’s the right time to change the filters, and how often should you do it? Before we jump into that, here are a few things you need to know to make clever filter choices for your home and system.

There’s More Than One Kind of Filter

There are various options to choose from when it comes to a furnace filter. While some filters are washable, making them reusable, other filters are only for one-time use, and you will have to get rid of them when they are no longer usable. These include:

  • Fiberglass Or Synthetic Filters: They are a low-cost option but need to get replaced every 30 days.
  • Polyester Filters: They are nearly four times as costly as a fiberglass filter. However, they offer better protection against harmful pollutants.
  • Electrostatic Filters: They last considerably longer than other filters and attract particles in the air by self-charging.
  • Pleated Filters: Made from high-quality material, they can last for three to six months based on material, manufacturer, and usage.
  • HEPA (High-Efficiency Particulate Air) Filters: These are the best filters for trapping pollutant particles. However, they significantly reduce system airflow and cost more money in energy usage.

How Frequently Should You Change Your Filters?

Generally, we recommend changing furnace air filters every 90 days, assuming average usage conditions, because the longer you wait, the more dirt, dust, and allergens clog the filter and reduce your HVAC system’s efficiency.

However, several factors affect the longevity of your air filter:

  • Your home’s size: Larger houses pump more air to maintain the right temperature. Hence, air filters may need to be changed more often than the filters in a smaller residence.
  • Allergies/ medical conditions: If you or any of your family members have asthma, allergies, or respiratory issues, we recommend changing the air filters as often as you can to prevent flare-ups.
  • Pets: We all love having pets, but since most pets shed and track in dirt from outdoors, you may want to change the filter every two months to keep it clear of pet hair and dander.
  • Air quality: Your indoor air gets polluted with excess smog, dust, and debris if you live in bigger or busier cities, reducing filter efficiency. Hence, they need to be changed every 2-3 months.

Consider Air 4 U for Top Air Quality

As one of the best heating contractors in Tucson, AZ, we give you a reprieve from the stress of choosing the right furnace filter. With a reliable team of certified technicians, we ensure your HVAC unit is running at maximum efficiency.

We prioritize customer comfort and air quality and offer services that range from installation and maintenance to heating repair in Marana and surrounding areas. Discover more about filters and indoor air quality at or call at 888-70-AIR4U.