Find your filter size
20 x 20 x 116 x 25 x 116 x 20 x 114 x 25 x 114 x 18 x 118 x 20 x 120 x 22 x 124 x 30 x 1Shop all sizes

"We're passionate about ensuring you have the right filters for your home or business."
Mark and Michelle, founders of AC Filters 4 Less
Shop by Filter Type
Choose the filter type that's right for your system.
Fiberglass FiltersBasic, economical AC filtration (MERV 3)SHOP FIBERGLASS ›
Polyester FiltersDurable AC filter option (MERV 5)SHOP POLYESTER ›
Pleated FiltersHigher-filtration AC filters, MERV 8+SHOP PLEATED ›
Media PadsCut-to-size AC filter mediaSHOP MEDIA PADS ›
Practical PleatReturn grille AC filters, MERV 11SHOP PRACTICAL PLEAT ›Shop by exact dimensions. The size is printed on the edge of your current filter.
1-inch sizes
20 x 20 x 114 x 18 x 116 x 25 x 118 x 20 x 120 x 22 x 114 x 25 x 116 x 20 x 124 x 30 x 1
2-inch sizes
16 x 25 x 220 x 25 x 220 x 20 x 2
4-inch sizes
20x20x1 is one of the most common sizes in American homes. See all 20x20x1 air filters.
Choose the MERV level that fits your system.
Not sure which MERV you need? Read the MERV rating guide › | See all MERV ratings
How to Pick the Right AC Filter
AC filters help protect your HVAC system by capturing dust and other particles. Choose the right filter by size, thickness and MERV rating.
How often should you change your AC filter?
Every 1 to 3 months for a 1-inch filter. Change it every 60 days if you have pets or allergies, or run the system year-round. A 4-inch filter lasts 6 to 12 months. If the filter looks gray and clogged, change it, whatever the calendar says.
What MERV rating should I choose for my AC filter?
MERV 8 is right for most homes. It catches dust, pollen and lint without choking airflow. Go to MERV 11 if you have pets or allergies. Only use MERV 13 if your system manual says it can handle it. Tighter filters restrict airflow, and some units cannot take that.
Not sure of your size?
Look at the edge of your current filter. The size is printed there. If it is not, measure length, width and thickness, then text or call 954-588-7774. We also make custom sizes.

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