Actual size: 13.5 x 13.5 x 0.75 inches
Pleated air filters suitable for furnaces, ACs and residential HVAC systems
MERV 11 filters remove up to 95% of common particles including fine dust, smoke, and smog particles. These filters reduce allergy symptoms and protect against outdoor air pollution.
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MERV 11 air filters are designed for homes with allergies and in some cases, asthma. Those with respiratory illnesses or compromised immune systems may benefit from MERV 11 air filters due to these filters being significantly more powerful than alternative MERV filters at capturing smaller particles, such as MERV 8.
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Check the label on your current filter or use a tape measure to get the exact length, width, and depth before selecting your size.
Nominal size
Nominal size is what you normally see printed on the label. This is usually a rounded size which is often not the true size of your filter.
Actual size
Actual size is the true size of the air filter, usually written in smaller font below the nominal size.
Measure your current air filter or the length, width, and depth of the opening slot to get the actual size. Round it up to the nearest whole inch to get the nominal size.
Installing 14x14x1 air filters couldn't be easier. Just make sure to align the arrow printed on the side with the airflow direction!
Remove the air filter from the package
Locate the arrow and point it in the direction of the fan
Slide the filter in to the slot of the central unit
For return grills, insert the filter into the grill, pointing the arrow inwards
For best indoor air quality, we recommend you change your filters regularly at different times depending on your situation.
Replace your air filter every 6 weeks to minimize the circulation of bacteria and allergens in the air.
Replace air filters every 2 months to reduce odors as well as pet dander and hair buildup in your system.
Replace your air filter every 2-3 months to reduce airborne particles and maintain cleaner indoor air.
Keeping your air filter replacement schedule in mind can be challenging to say the least. Make your life easier with Filter King's auto delivery.
The actual size of a 14x14x1 air filter is slightly smaller than the labeled size, usually about 13½ x 13½ x ¾ inches. This sizing allows the filter to fit securely in the return slot (while sealing it properly).
It's recommended to replace your 14x14x1 air filters every 30–60 days. Compact air filters have less surface area, so they typically load faster than larger sizes. Homes with pets, dust, dander, allergens, and constant HVAC use should replace closer to 30 days. Set reminders to keep your air filters consistent and working properly.
14x14x1 air filters are harder to find because they serve specific compact systems, not typical single-family homes.
No. You should not use a 2-inch filter instead of a 1-inch filter unless your system is designed for a deeper filter. A thicker filter than needed can restrict airflow or prevent the grille from closing properly.
Yes, but only if your system allows for it. A MERV 13 filter can restrict airflow quickly in compact systems. Always check limitations using your owner's manual or guide while monitoring airflow closely. Many smaller systems perform better with MERV 8 air filters in place.
Yes. These air filters typically cost more per year, but not per filter. Most homes replace 6–12 compact air filters annually, compared to 2–4 larger filters.
No. These pleated air filters are disposable, not washable. Washing them damages the filter media and reduces its ability to capture particles. It's always best to replace the filter once it has become loaded.
You can buy 14x14x1 air filters online from trusted HVAC suppliers, such as FilterKing. Online stores offer more consistent stock, multiple MERV options, bulk purchasing solutions, and subscription delivery services.
MERV 8 filters