Actual size: 15.5 x 24.5 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 16x25x1 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 16x25x1 filter may measure 15.5x24.5x0.75 inches. Knowing the actual size of the filter is crucial to ensure the filter slides smoothly and snugly into place during a replacement.
No. Washing a pleated 1-inch filter of any size is not recommended, as water may damage the fibers that assist in trapping allergens and dust. This may cause your filter to become entirely ineffective.
Yes, it may, if you're using a low-capacity HVAC system or an older model. Check your unit's static pressure rating to find a filter that's compatible for your at-home system. If you have a high-capacity HVAC system, MERV 13 may be suitable for providing optimal protection against fine particles and allergens.
No. Most residential HVAC systems can handle both MERV 8 and MERV 11 filters without causing a restriction of airflow.
If you have a home with excessive dust, dirt, or pet dander, a 1-inch filter is likely to become dirty at a faster rate. Replacing your 1-inch filter frequently, such as once every 30 days, or once a month, is highly advisable if this is the case.
No. Cutting a larger filter down to 16x25x1 can cause damage to the filter's frame and filtration media.
A 16x25x1 filter should fit snugly without gaps. However, you should not have to force the filter in place. When a filter is properly sized and measured, it will slide into place with ease.
MERV 8 filters