Furnace filters

99 cent filters do not work effectively!

When furnace air filters become dirty, your hvac system does not maximize its efficiency. Although your furnace or air conditioning system may appear to be working, dirty air filters will restrict the air flow in your system. The dirty filter will contaminate the system causing strain on your system's air flow. This contaminated and restricted air flow will cause the system to take longer to heat or cool your home. It will also require more energy to run, in effect, raising your utility bills.

Here are ideal replacements for common furnace and air conditioning filtration. Looking for box style whole house air cleaner filters? Click here to see our selection of whole house air cleaner line of quality replacement air filter products.

Furnace Filter Sizes

Click for Size 4.23 x 10.75 x 1.5 4.25 x 11.6 x 1.38 4.54 x 10.11 x 3.19 4.84 x 10.12 x 1.65 4.88 x 10.19 x 3 4.88 x 10.69 x 1 5.06 x 11.64 x 1.1 6 x 12 x 1 6.33 x 17.33 x 2 6.65 x 12.33 x 2 7.5 x 15.5 x 1 7.5 x 15.5 x 1.75 7.5 x 29.5 x 1 7.5 x 29.5 x 1.75 7.94 x 13.92 x 1.65 8 x 14 x 1 8 x 14 x 2 8 x 14 x 4 8 x 16 x 1 8 x 16 x 2 8 x 16 x 4 8 x 20 x 1 8 x 20 x 2 8 x 20 x 4 8 x 24 x 1 8 x 24 x 2 8 x 24 x 4 8 x 30 x 1 8 x 30 x 2 8 x 30 x 4 8.92 x 13.94 x 0.97 9 x 9.5 x 1.75 9 x 11.38 x 0.75 9 x 15 x 1 9.5 x 7.25 x 2.5 9.5 x 9.5 x 1 9.5 x 9.5 x 1.75 9.5 x 10 x 1.5 9.5 x 11.5 x 1.5 9.5 x 14.5 x 1 9.5 x 14.5 x 1.75 9.5 x 15.5 x 1.75 9.5 x 16.5 x 1 9.5 x 19.5 x 1 9.5 x 19.5 x 1.75 9.5 x 23.5 x 1 9.5 x 23.5 x 1.75 9.5 x 24.5 x 1 9.5 x 24.5 x 1.75 9.75 x 9.5 x 2 9.75 x 9.65 x 1.65 9.75 x 23.75 x 1 9.75 x 23.75 x 2 9.75 x 23.75 x 4 9.75 x 29.75 x 1 9.75 x 29.75 x 1.75 10 x 8 x 0.375 10 x 10 x 1 10 x 10 x 2 10 x 10 x 4 10 x 13 x 1.5 10 x 13 x 1.65 10 x 14 x 1 10 x 14 x 2 10 x 14 x 4 10 x 15 x 1 10 x 15 x 2 10 x 15 x 4 10 x 16 x 1 10 x 16 x 2 10 x 16 x 4 10 x 18 x 1 10 x 18 x 2 10 x 18 x 4 10 x 20 x 1 10 x 20 x 2 10 x 20 x 4 10 x 24 x 1 10 x 24 x 2 10 x 24 x 4 10 x 25 x 1 10 x 25 x 2 10 x 25 x 4 10 x 30 x 1 10 x 30 x 2 10 x 30 x 4 10.5 x 10.5 x 1 10.5 x 21.75 x 1 10.75 x 11.75 x 1.5 10.78 x 18.25 x 0.375 11 x 15.78 x 2 11.25 x 11.25 x 1 11.25 x 11.25 x 2 11.25 x 11.25 x 4 11.25 x 14.65 x 1.65 11.25 x 19.25 x 1 11.25 x 19.25 x 2 11.25 x 19.25 x 4 11.25 x 21 x 1 11.25 x 21 x 2 11.25 x 23.25 x 1 11.25 x 23.25 x 2 11.25 x 23.25 x 4 11.25 x 23.5 x 2 11.38 x 23.38 x 1.75 11.5 x 11.5 x 1 11.5 x 15.5 x 1 11.5 x 15.5 x 1.75 11.5 x 17.5 x 1 11.5 x 19.5 x 1 11.5 x 19.5 x 1.75 11.5 x 21 x 1 11.5 x 21 x 2 11.5 x 21 x 4 11.5 x 23.25 x 2 11.5 x 23.5 x 1 11.5 x 24.5 x 1 11.5 x 24.5 x 1.75 11.5 x 26.5 x 1 11.5 x 26.5 x 1.75 11.5 x 29.5 x 1 11.5 x 29.5 x 1.75 11.5 x 35.5 x 1 11.5 x 35.5 x 1.75 11.75 x 11.75 x 1.75 11.75 x 17.75 x 1.75 11.75 x 19.75 x 1 11.75 x 19.75 x 1.75 11.75 x 23.75 x 1 11.75 x 23.75 x 1.75 12 x 4.5 x 1 12 x 12 x 1 12 x 12 x 2 12 x 12 x 4 12 x 16 x 1 12 x 16 x 2 12 x 16 x 4 12 x 18 x 1 12 x 18 x 2 12 x 18 x 4 12 x 20 x 1 12 x 20 x 2 12 x 20 x 4 12 x 20 x 5 12 x 22 x 1 12 x 22 x 2 12 x 22 x 4 12 x 23 x 1 12 x 24 x 1 12 x 24 x 2 12 x 24 x 4 12 x 24 x 4.5 12 x 24 x 10 12 x 24 x 12 12 x 24 x 15 12 x 24 x 20 12 x 24 x 22 12 x 24 x 30 12 x 24 x 36 12 x 25 x 1 12 x 25 x 2 12 x 25 x 4 12 x 26.2 x 1 12 x 26.5 x 1 12 x 26.5 x 2 12 x 26.5 x 4 12 x 27 x 1 12 x 27 x 2 12 x 27 x 4 12 x 30 x 1 12 x 30 x 2 12 x 30 x 4 12 x 36 x 1 12 x 36 x 2 12 x 36 x 4 12 x 42 x 22 12 x 48 x 2 12 x 72 x 2 12 x 120 x 2 12 x 144 x 2 12 x 216.5 x 4 12.3 x 18.25 x 0.375 12.5 x 20 x 4.375 12.5 x 21 x 1 12.5 x 21 x 2 12.5 x 21 x 4 12.63 x 16.32 x 0.98 12.75 x 21 x 1 12.75 x 21 x 2 12.75 x 21 x 4 13 x 7.25 x 2.5 13 x 8 x 1 13 x 9.5 x 8.5 13 x 18 x 1 13 x 18 x 2 13 x 18 x 4 13 x 20 x 1 13 x 20 x 2 13 x 20 x 4 13 x 21 x 1 13 x 21 x 2 13 x 21 x 4 13 x 21.5 x 1 13 x 21.5 x 2 13 x 21.5 x 4 13 x 24 x 1 13 x 24 x 2 13 x 24 x 4 13 x 24.4 x 4 13 x 214 x 4 13.13 x 17.38 x 1 13.25 x 13.25 x 1 13.25 x 13.25 x 2 13.25 x 13.25 x 4 13.5 x 10.5 x 1.25 13.5 x 13.5 x 1 13.5 x 13.5 x 1.75 13.5 x 17.5 x 1 13.5 x 17.5 x 1.75 13.5 x 19.5 x 1 13.5 x 19.5 x 1.75 13.5 x 19.5 x 2 13.5 x 23.5 x 1 13.5 x 23.5 x 1.75 13.5 x 24.5 x 1 13.5 x 24.5 x 1.75 13.5 x 29.5 x 1 13.5 x 29.5 x 1.75 13.5 x 35.5 x 1 13.5 x 35.5 x 1.75 13.75 x 17.5 x 1.75 13.97 x 8.97 x 1 14 x 14 x 1 14 x 14 x 2 14 x 14 x 4 14 x 17.5 x 1.75 14 x 18 x 1 14 x 18 x 2 14 x 18 x 4 14 x 20 x 1 14 x 20 x 2 14 x 20 x 4 14 x 22 x 1 14 x 22 x 2 14 x 22 x 4 14 x 22 x 5.25 14 x 24 x 1 14 x 24 x 2 14 x 24 x 4 14 x 25 x 1 14 x 25 x 2 14 x 25 x 4 14 x 25 x 4.5 14 x 27 x 1 14 x 27 x 2 14 x 27 x 4 14 x 28 x 1 14 x 28 x 2 14 x 28 x 4 14 x 30 x 1 14 x 30 x 2 14 x 30 x 4 14 x 36 x 1 14 x 36 x 2 14 x 36 x 4 14.17 x 18.25 x 0.375 14.5 x 19 x 1 14.5 x 19 x 2 14.5 x 19 x 4 14.5 x 19.5 x 1 14.5 x 19.5 x 1.75 14.5 x 24.5 x 1.75 14.5 x 27 x 5 14.5 x 29.5 x 1.75 15 x 15 x 1 15 x 15 x 2 15 x 15 x 4 15 x 20 x 1 15 x 20 x 2 15 x 20 x 4 15 x 24 x 1 15 x 24 x 2 15 x 25 x 1 15 x 25 x 2 15 x 25 x 4 15 x 29.5 x 1.75 15 x 30 x 1 15 x 30 x 2 15 x 30 x 4 15 x 30.75 x 1 15 x 30.75 x 2 15 x 30.75 x 4 15 x 31 x 1 15.25 x 15.25 x 1 15.25 x 15.25 x 2 15.25 x 15.25 x 4 15.37 x 21.78 x 5.25 15.37 x 21.87 x 5.25 15.37 x 25.5 x 5.25 15.38 x 21.78 x 5.25 15.38 x 26.9 x 6 15.5 x 15.5 x 1.75 15.5 x 23.5 x 1.75 15.5 x 29.75 x 1.75 15.5 x 35.5 x 1 15.5 x 35.5 x 1.75 15.75 x 25.75 x 4.37 15.75 x 31.75 x 1.75 15.75 x 48 x 0.2 16 x 10 x 0.375 16 x 12.5 x 0.375 16 x 16 x 1 16 x 16 x 2 16 x 16 x 4 16 x 18 x 1 16 x 18 x 2 16 x 18 x 4 16 x 20 x 1 16 x 20 x 2 16 x 20 x 4 16 x 20 x 4.5 16 x 20 x 5 16 x 20 x 10 16 x 20 x 15 16 x 20 x 20 16 x 21 x 1 16 x 21 x 2 16 x 21 x 4 16 x 21 x 5 16 x 21.5 x 1 16 x 21.5 x 2 16 x 21.5 x 4 16 x 22 x 1 16 x 22 x 2 16 x 22 x 4 16 x 22.25 x 1 16 x 22.25 x 2 16 x 22.25 x 4 16 x 22.5 x 1 16 x 22.5 x 2 16 x 24 x 1 16 x 24 x 2 16 x 24 x 4 16 x 25 x 1 16 x 25 x 2 16 x 25 x 3 16 x 25 x 4 16 x 25 x 4.5 16 x 25 x 5 16 x 25 x 5.25 16 x 25 x 6 16 x 25 x 10 16 x 25 x 15 16 x 25 x 20 16 x 26 x 0.25 16 x 26 x 1 16 x 26 x 3 16 x 26 x 5 16 x 27 x 6.13 16 x 27.18 x 5.78 16 x 28 x 4 16 x 30 x 1 16 x 30 x 2 16 x 30 x 4 16 x 32 x 1 16 x 32 x 2 16 x 32 x 4 16 x 36 x 1 16 x 36 x 2 16 x 36 x 4 16 x 48 x 0.32 16 x 48 x 2 16 x 50 x 2 16 x 60 x 2 16 x 72 x 2 16 x 75 x 2 16 x 80 x 2 16 x 96 x 2 16 x 100 x 2 16 x 120 x 2 16 x 125 x 2 16 x 1080 x 1 16.1 x 18.83 x 0.98 16.205 x 21.25 x 4 16.25 x 21 x 1 16.25 x 21 x 2 16.25 x 21 x 4 16.25 x 21.25 x 1 16.25 x 21.25 x 2 16.25 x 21.25 x 4 16.375 x 21.375 x 2 16.38 x 21 x 4 16.38 x 21.374 x 4 16.38 x 21.375 x 4 16.38 x 21.38 x 1 16.38 x 21.38 x 2 16.38 x 21.5 x 1 16.5 x 16 x 1 16.5 x 19.5 x 1.75 16.5 x 20 x 1.75 16.5 x 21 x 1 16.5 x 21 x 2 16.5 x 21 x 4 16.5 x 21.5 x 1 16.5 x 21.5 x 1.75 16.5 x 21.63 x 1 16.5 x 22 x 1 16.5 x 22 x 2 16.5 x 22 x 4 16.5 x 24.5 x 1 16.5 x 24.5 x 1.75 16.88 x 17.75 x 1 17 x 17 x 1 17 x 17 x 2 17 x 17 x 4 17 x 19 x 1 17 x 19 x 2 17 x 19 x 4 17 x 20 x 1 17 x 20 x 2 17 x 20 x 4 17 x 21 x 1 17 x 21 x 2 17 x 21 x 4 17 x 22 x 1 17 x 22 x 2 17 x 22 x 4 17 x 25 x 1 17 x 25 x 2 17 x 25 x 4 17 x 26 x 4 17 x 28 x 6 17.1 x 23.1 x 1.75 17.2 x 26.2 x 5 17.25 x 17.25 x 1 17.25 x 17.25 x 2 17.25 x 17.25 x 4 17.25 x 19.25 x 1 17.25 x 19.25 x 2 17.25 x 19.25 x 4 17.25 x 23.25 x 1 17.25 x 23.25 x 2 17.25 x 23.25 x 4 17.25 x 23.5 x 4 17.25 x 26 x 1 17.25 x 26 x 2 17.25 x 26 x 4 17.25 x 29.25 x 1 17.25 x 29.25 x 2 17.25 x 29.25 x 4 17.25 x 29.5 x 1 17.25 x 29.5 x 2 17.25 x 35.25 x 1 17.25 x 35.25 x 2 17.25 x 35.25 x 4 17.38 x 17.38 x 1 17.38 x 23.38 x 1 17.5 x 17.5 x 1 17.5 x 17.5 x 1.75 17.5 x 19.5 x 1 17.5 x 19.5 x 1.75 17.5 x 21 x 1 17.5 x 21 x 4.5 17.5 x 21 x 5 17.5 x 21.5 x 1 17.5 x 21.5 x 1.75 17.5 x 23.5 x 1 17.5 x 23.5 x 1.75 17.5 x 23.5 x 2 17.5 x 23.5 x 4 17.5 x 24.5 x 1 17.5 x 24.5 x 1.75 17.5 x 27 x 1 17.5 x 27 x 2 17.5 x 27 x 4 17.5 x 28 x 4.5 17.5 x 28 x 5 17.5 x 29.5 x 1 17.5 x 29.5 x 1.75 17.5 x 35.5 x 1 17.5 x 35.5 x 1.75 18 x 18 x 1 18 x 18 x 2 18 x 18 x 4 18 x 19 x 1 18 x 20 x 1 18 x 20 x 2 18 x 20 x 4 18 x 22 x 1 18 x 22 x 2 18 x 22 x 4 18 x 24 x 1 18 x 24 x 2 18 x 24 x 4 18 x 24 x 6 18 x 25 x 1 18 x 25 x 2 18 x 25 x 4 18 x 30 x 1 18 x 30 x 2 18 x 30 x 4 18 x 36 x 1 18 x 36 x 2 18 x 36 x 4 18.25 x 22 x 1 18.25 x 22 x 2 18.25 x 22 x 4 18.3 x 23.75 x 3.5 18.32 x 21.25 x 3.5 18.38 x 28.25 x 3.75 18.5 x 20.5 x 1 18.5 x 20.5 x 1.75 18.75 x 14.75 x 2.25 19 x 19 x 1 19 x 19 x 2 19 x 19 x 4 19 x 20 x 4.3 19 x 20 x 5 19 x 21 x 1 19 x 21 x 2 19 x 21 x 4 19 x 22 x 1 19 x 22 x 2 19 x 22 x 4 19 x 23 x 1 19 x 23 x 2 19 x 23 x 4 19 x 27 x 1 19 x 27 x 2 19 x 27 x 4 19 x 36 x 0.25 19 x 54 x 0.25 19 x 96 x 2 19.25 x 21.25 x 1 19.25 x 21.25 x 2 19.25 x 21.25 x 4 19.25 x 23.25 x 1 19.25 x 23.25 x 2 19.25 x 23.25 x 4 19.38 x 19.38 x 1 19.38 x 29.38 x 1 19.5 x 21 x 1 19.5 x 21 x 2 19.5 x 21 x 4 19.5 x 21.5 x 1.75 19.5 x 22 x 1 19.5 x 22 x 2 19.5 x 22 x 4 19.5 x 22.5 x 1 19.5 x 22.5 x 1.75 19.5 x 23.5 x 1 19.5 x 23.5 x 1.75 19.5 x 29.5 x 1 19.5 x 35.5 x 1 19.5 x 35.5 x 1.75 19.75 x 21 x 1 19.75 x 21 x 2 19.75 x 21 x 4 19.75 x 22 x 1 19.75 x 22 x 2 19.75 x 22 x 4 19.75 x 22 x 5.25 19.75 x 24.37 x 4.37 19.75 x 24.38 x 4.37 19.75 x 25.37 x 4.37 19.8 x 21.5 x 1 19.87 x 21.5 x 1 19.88 x 21.5 x 1 19.88 x 21.5 x 2 19.88 x 21.5 x 4 20 x 10 x 0.375 20 x 12.5 x 0.375 20 x 20 x 1 20 x 20 x 2 20 x 20 x 4 20 x 20 x 4.5 20 x 20 x 5 20 x 20 x 6 20 x 20 x 10 20 x 20 x 15 20 x 20 x 20 20 x 21 x 1 20 x 21 x 2 20 x 21 x 4 20 x 21 x 5 20 x 21.5 x 1 20 x 21.5 x 2 20 x 21.5 x 4 20 x 21.63 x 1 20 x 22 x 1 20 x 22 x 2 20 x 22 x 4 20 x 22.25 x 1 20 x 22.25 x 2 20 x 22.25 x 4 20 x 22.5 x 1 20 x 22.5 x 1.75 20 x 23 x 1 20 x 23 x 2 20 x 23 x 4 20 x 23 x 5 20 x 24 x 1 20 x 24 x 2 20 x 24 x 4 20 x 24 x 6 20 x 24 x 12 20 x 24 x 15 20 x 24 x 20 20 x 24 x 22 20 x 24 x 30 20 x 24 x 36 20 x 25 x 1 20 x 25 x 2 20 x 25 x 3 20 x 25 x 4 20 x 25 x 4.5 20 x 25 x 5 20 x 25 x 5.25 20 x 25 x 6 20 x 25 x 6.12 20 x 25 x 6.13 20 x 25 x 10 20 x 25 x 15 20 x 25 x 20 20 x 25.25 x 3.5 20 x 26 x 1 20 x 26 x 3 20 x 26 x 5 20 x 27 x 1 20 x 27 x 2 20 x 27 x 4 20 x 30 x 1 20 x 30 x 2 20 x 30 x 4 20 x 30 x 4.5 20 x 32 x 1 20 x 32 x 2 20 x 32 x 4 20 x 36 x 1 20 x 36 x 2 20 x 36 x 4 20 x 40 x 1 20 x 40 x 2 20 x 48 x 1 20 x 48 x 2 20 x 50 x 1 20 x 50 x 2 20 x 60 x 2 20 x 72 x 2 20 x 75 x 2 20 x 80 x 2 20 x 96 x 2 20 x 100 x 2 20 x 120 x 2 20 x 125 x 2 20 x 1080 x 1 20.1 x 21.1 x 5 20.1 x 23.2 x 5 20.25 x 20.75 x 5.25 20.25 x 24.25 x 5.78 20.25 x 25.3 x 5.25 20.25 x 25.38 x 5.25 20.5 x 21.5 x 1 20.5 x 21.5 x 1.75 20.7 x 26.2 x 5 21 x 11.5 x 1 21 x 21 x 1 21 x 21 x 2 21 x 21 x 4 21 x 21 x 4.5 21 x 21 x 5 21 x 22 x 1 21 x 22 x 2 21 x 22 x 4 21 x 23 x 0.2 21 x 23 x 1 21 x 23 x 2 21 x 23 x 4 21 x 23.25 x 1 21 x 23.25 x 2 21 x 23.25 x 4 21 x 23.5 x 1 21 x 24.5 x 4.5 21 x 24.5 x 5 21 x 26 x 4 21 x 28 x 4.5 21.25 x 21.25 x 1 21.25 x 21.25 x 2 21.25 x 21.25 x 4 21.5 x 21 x 1 21.5 x 21.5 x 1 21.5 x 23.25 x 1 21.5 x 23.25 x 2 21.5 x 23.25 x 4 21.5 x 23.5 x 1 21.5 x 23.5 x 1.75 21.5 x 24 x 1 21.5 x 24 x 2 21.5 x 24 x 4 21.5 x 26 x 1 21.5 x 26 x 2 21.5 x 26 x 4 21.5 x 27.5 x 5 21.65 x 24.25 x 3.5 21.875 x 21.875 x 1.75 22 x 22 x 1 22 x 22 x 2 22 x 22 x 4 22 x 24 x 1 22 x 24 x 2 22 x 24 x 4 22 x 24 x 5.25 22 x 25 x 2 22 x 26 x 1 22 x 26 x 2 22 x 26 x 4 22 x 28 x 1 22 x 28 x 2 22 x 28 x 4 22.25 x 11 x 0.125 22.25 x 25 x 1 22.25 x 25 x 2 22.25 x 25 x 4 22.5 x 11 x 4.25 22.5 x 22 x 5.25 23 x 25 x 1 23 x 25 x 2 23 x 25 x 4 23.1 x 23.1 x 1 23.1 x 23.1 x 1.75 23.25 x 11.5 x 2 23.25 x 29.25 x 1 23.25 x 29.25 x 2 23.25 x 29.25 x 4 23.38 x 21.5 x 1 23.38 x 23.38 x 1 23.38 x 23.38 x 1.75 23.5 x 21 x 1 23.5 x 23.5 x 1 23.5 x 23.5 x 2 23.5 x 23.5 x 4 23.5 x 25 x 1 23.5 x 25 x 2 23.5 x 25 x 4 23.5 x 29.5 x 1 23.5 x 29.5 x 1.75 23.5 x 35.5 x 1 23.5 x 35.5 x 1.75 23.75 x 23.75 x 1 23.75 x 23.75 x 1.75 23.75 x 24.37 x 4.37 23.75 x 24.38 x 4.38 24 x 12 x 6 24 x 12 x 16 24 x 24 x 1 24 x 24 x 2 24 x 24 x 4 24 x 24 x 4.5 24 x 24 x 6 24 x 24 x 10 24 x 24 x 12 24 x 24 x 15 24 x 24 x 20 24 x 24 x 22 24 x 24 x 30 24 x 24 x 36 24 x 25 x 1 24 x 25 x 2 24 x 25 x 4 24 x 28 x 1 24 x 28 x 2 24 x 28 x 4 24 x 30 x 1 24 x 30 x 2 24 x 30 x 4 24 x 36 x 1 24 x 36 x 2 24 x 36 x 4 24 x 48 x 2 24 x 72 x 2 24 x 96 x 2 24 x 120 x 2 24 x 1080 x 1 24.2 x 26.2 x 5 24.5 x 24.5 x 1 24.5 x 24.5 x 1.75 24.5 x 27.5 x 1 24.5 x 27.5 x 1.75 24.5 x 28 x 4.5 24.5 x 28.5 x 1 24.5 x 28.5 x 1.75 24.5 x 31.5 x 1 24.5 x 31.5 x 1.75 24.5 x 31.75 x 1.75 24.75 x 24.75 x 1 25 x 20 x 5 25 x 25 x 1 25 x 25 x 2 25 x 25 x 4 25 x 28 x 1 25 x 28 x 2 25 x 28 x 4 25 x 29 x 1 25 x 29 x 2 25 x 29 x 4 25 x 30 x 1 25 x 32 x 1 25 x 32 x 2 25 x 32 x 4 25 x 50 x 2 25 x 75 x 2 25 x 100 x 2 25 x 125 x 2 25.7 x 20.1 x 5 26 x 21 x 1 26.5 x 26.5 x 1 26.5 x 26.5 x 1.75 27 x 27 x 1 27 x 27 x 2 27 x 27 x 4 27.5 x 29.5 x 1 27.5 x 29.5 x 1.75 28 x 29.5 x 2 28 x 30 x 1 28 x 30 x 2 28 x 30 x 4 28.5 x 28.5 x 1 28.5 x 28.5 x 1.75 29 x 29 x 1 29 x 29 x 2 29 x 29 x 4 29.5 x 29.5 x 1 29.5 x 29.5 x 1.75 30 x 30 x 1 30 x 30 x 2 30 x 30 x 4 30 x 32 x 1 30 x 36 x 1 30 x 36 x 2 30 x 36 x 4 32 x 29.5 x 2 36 x 29.5 x 2 40 x 1080 x 1 48 x 1080 x 1 60 x 1080 x 1 72 x 1080 x 1

FiltersUSA.com features these popular brands of furnace & airconditioner filters:

• Accumulair Electrostatic Filters

  MERV 6 to MERV 13 <-- BEST SELLER

• BestAir odor and allergy filters

  Compare to Filtrete ®

• AllergyZone Furnace Filters

• Dust Free EnviroGREEN Washable MERV 8 Filter

• Purolator Furnace Filters

• MERV 8 Poly Filters

• Purolator Pleated Furnace Filters

• Washable MERV 8 Filter

• 3 Ply Media Pink & White Furnace Filters

• Universal Cut to Fit Furnace Filter

Furnace & Air Conditioner Filter Replacement

How to replace your air conditioner or furnace filter

Learn how to change your furnace filter.

How ofter should I change my furnace filters? Recommendations vary based on a number of factors: the type of filter that you use, how many pets you have, whether anyone in your home has allergies, etc. If you use disposable fiberglass panel filters, you should change them anywhere from once a month to once every three months. Pleated furnace filters generally last from 3 months with some up to a year. Furnace filter installation is simple process that offers savings on your electric bill.

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