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How Often Should You Change Furnace Filters?

Technician installing a furnace filter
Technician installing a furnace filter

As you may already know, a fresh, clean furnace filter makes a significant difference in indoor air quality. It also improves HVAC efficiency and can result in lower utility bills. These filters are designed to trap dust and other airborne particles around your home, so they play a critical role during the Ann Arbor-area weather extremes. So, if you’ve been searching for “How often should you change furnace filters?” we have answers for you.

The Standard 1-3 Inch Filters

Many residential HVAC systems operate with these standard filters. It’s important to check them every 1-3 months. The amount of airborne debris they collect may depend on the number of occupants in your home, pets, allergies, and local air quality. It may also depend on if any home occupants have asthma or allergies. So if it becomes dirty anywhere in that time frame, it’s important to change it to keep it working properly.

HEPA Filters

HEPA filters are designed to more efficiently remove particles from the air inside your home. They’re also designed to last longer than standard filters, with replacement recommendations varying between 6 months and a year. It helps to periodically check them in this window to ensure that they are still operating effectively.

Electrostatic or Washable Filters

These filters are designed to be cleaned and reused. The intervals between cleaning or replacement can vary depending on the manufacturer’s recommendations.

High-Efficiency Filters

High-efficiency filters are designed to last between 6 and 12 months. They should still be checked periodically within that timespan to determine how dirty they are. This is especially true with pets and if there is anyone in the home with asthma or allergies.

Electronic Air Cleaners

Most electronic air cleaners only require cleaning and not replacement. Usually, the cleanings need to take place every 2 to 4 months.

There Are Clues for When It’s Time to Change the Filter

If checking the furnace filter isn’t front-most on your mind, when you see certain signs, it might be time. For example, if your furniture becomes dusty quickly after a house cleaning, it could indicate a dirty filter that is no longer adequately removing dust.

If your furnace is running more than normal to keep up with the cold Michigan temperatures, that could be another clue. If it’s gray and covered in dust or lint, it’s time to replace it, no matter what the above timespan indications might be.

Furnace Filters Are Easy to Change

Your furnace filter is likely located either behind an air return vent or on the side of the furnace. Some may be screwed in, and some may slide out from a slot. Once you have the old filter out, it can be discarded in the trash and a new one placed in.

Contact An Experienced HVAC Company for Routine Maintenance

Quality HVAC filters help ensure that your system is working as effectively as possible. It’s also important to make sure that your HVAC system undergoes regular preventative maintenance to ensure that it lasts. If you have any questions or would like to schedule an appointment, contact us today!

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