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A Few Details about Your AC’s Air Filter

Two weeks ago, we wrote a blog post to address one of the questions we hear frequently from our customers: “How often do I need to change my air conditioning system’s air filter?” The answer ranges between 1 to 6 months, depending both on your household and the type of filter in the HVAC system.

We’d like to get into that last point in a bit more depth, because you have a number of different options when it comes to the filter you use for you air conditioner (and furnace). Below are some of the filter choices—and how they affect how frequently you need to change them.

Permanent filters

As the name indicates, permanent filters don’t need to be replaced. But they do need to be cleaned on a regular basis, around once a month. To clean a permanent filter, remove it and use a hose on low-pressure to wash out the debris caught in it. Only return the filter to its slot when it’s completely dry. Permanent filters are less effective at stopping debris than temporary filters, and they can also develop mold and bacteria. For these reasons, most HVAC professionals recommend using other types of filters.

Fiberglass panel filters

Replacing filters doesn’t have to be an expensive proposition. Fiberglass panel filters are low-cost and usually go in packs at hardware stores where each filter costs only $1. But these filters become congested quickly and need replacment every month. Although they’re more efficient than permanent filters, they are still not as powerful as the third option.

Polyester pleated filters

These are pricier (around $10 a piece) but are both more effective at trapping contaminants and longer-lasting than fiberglass filters. Most of these media filters will only need to be replaced every 3 to 6 months. The frequency depends on how much you use the AC during the summer (and furnace in winter) and whether you have people with allergies in your household or have many pets.

When you need AC service in Logansport, LA, call the Doctor of Home Comfort: Hall’s Heating, Air Conditioning & Refrigeration!

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