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Keep Your Heat Pump Working Its Best with the Right Air Filter
Your heat pump is the heart of your home’s comfort, and keeping it in great shape starts with its air filter. The air filter does more than just trap dust—it protects your entire system and helps maintain the clean, healthy air your family breathes. If you’ve been putting off replacing yours, now’s the time to make the switch and see the difference it can make.
Why a Good Filter Matters
Think of your air filter as your heat pump’s first line of defense. Without it, dirt, pet hair, and allergens can clog up the system, making it work harder and increasing your energy bills. Worse, over time, that buildup can cause damage that’s expensive to fix. A quality filter keeps your system running smoothly and your air fresh, no matter the season.
What to Look For
Not all air filters are created equal. For most heat pumps, a 4-inch MERV 11 or MERV 13 media filter is a solid choice. It traps even tiny particles, like pollen and mold spores, without slowing down airflow. If you’re not sure which filter fits your system, brands like Aprilaire are trusted for their reliability and ease of installation. Don’t forget to check if you need a filter cabinet to ensure it’s installed correctly.
When to Change It
The key to a healthy heat pump is regular filter changes. For most homes, replacing the filter every three months is a good rule of thumb. If you’ve got pets, allergies, or live in an area with a lot of dust, you might need to change it more often—every one to two months. A clean filter means better airflow, cleaner air, and lower energy costs.
Ready to Upgrade?
If your filter’s overdue for a change, don’t wait any longer. Browse our range of high-performance heat pump air filters designed to keep your system in top shape. With easy ordering and fast delivery, it’s never been simpler to improve your home’s air quality and protect your heat pump. Shop now and breathe easier knowing your system is running at its best.
Proof Of Happy And Satisfied Customers
There’s no better proof of the quality of our air filters and service from our satisfied customers:
I use this website every time I need to order filters for my house. Service is great, & the product is great. We had a very hard time finding our odd sized filter in stores or online.
I own and operate a residential rental property business. Changing air filters has been a huge challenge for us in the past. Custom Filters Direct made the entire process for us a breeze
I never knew the importance of an air filter subscription until I actually had my filters delivered on a quarterly basis. Every time I forgot about the filters they show up in the mail!
We needed a custom size for our new rooftop units, contacted Custom Filters Direct and they got me exactly what I needed, delivered to my property managers office a few days later. Highly recommended
I emailed them a list of my furnace filter sizes. The quote I got was spot on, and it arrived on time. I am going to reorder from them
They arrived quickly and I noticed the difference in air quality the night I put them in! Perfect filters – especially for anyone with allergies!
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(46) Verified Reviews
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(46) Verified Reviews
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(46) Verified Reviews
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(46) Verified Reviews
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(46) Verified Reviews
(46)Verified Reviews
(46)Verified Reviews
(46)Verified Reviews
(46)Verified Reviews
(46)Verified Reviews
Frequently Asked Questions
CHeat pump filters should generally be replaced every three months to maintain good airflow and system efficiency. However, if you have pets, allergies, or live in a dusty area, consider checking and replacing them more frequently—around every 1-2 months.
Running your heat pump without a filter can lead to poor indoor air quality, as dust and allergens can circulate freely in your home. It can also damage your system, as debris may build up on essential components, causing it to work harder and increasing energy costs.
The air filter is usually found near the air handler, inside a slot or compartment on the return air side of the unit. In some systems, it might be behind a grille in the wall, ceiling, or floor, so check these areas if you're having trouble locating it.
Yes, heat pumps absolutely need air filters! The filters trap dust, pollen, and other particles, protecting the system's internal components and ensuring the air circulating in your home is clean and healthy.
For most heat pumps, MERV 11 - MERV 13 media filter works well, offering excellent filtration without significantly reducing airflow. Brands like Aprilaire are popular for their low-pressure drop and compatibility with many HVAC systems. Just ensure your system is equipped with a proper filter cabinet.