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16x25x4 MERV 13 Air Filters

Name: 16x25x4 MERV 13 Air Filter
Brand: Filter King
SKU: FK16x25x4-M13
Price: 55.56 USD
Availability: InStock
Rating: 4.732106 (489 reviews)

Actual size: 15.5 x 24.5 x 3.75 inches

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Filter guide

MERV 8 MERV 11 MERV 13 ODOR ELIMINATOR

Superior

Deep pleated air filters for whole-house and commercial HVAC systems

Learn more

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16x25x4 air filter description

SKU

FD16X25X4
MERV rating

MERV 13
MPR rating

MPR 1500-1900
FPR rating

FPR 10
Filtration efficiency

98%
Odor eliminator

No
Captured particle size

0.3-10 microns
Lifespan

6-12 months

What does MERV 13 protect against?

MERV 13 filters remove up to 98% of common particles including bacteria and virus carriers. These hospital-grade filters protect family members with allergies, asthma, or weakened immune systems.

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Fast & free shipping

Processed quickly, ships fast, free for all orders
Easy to return/exchange

Return your items within 30 days and get a full refund
All sizes available

Find your perfect fit with our complete size range

Who is the 16x25x4 MERV 13 best for?

MERV 13 filters are ideal for homes where air quality is a top priority. They're ideal for households with allergies, asthma, and respiratory issues. Using a MERV 13 filter can also help improve indoor air quality in households with immunocompromised family members and homes with pets that require extra protection.

Our MERV 13 filters are suitable for urban homes near traffic and light commercial spaces, such as offices or medical waiting rooms and even clinics in some instances. Shared living spaces and rental units may benefit from MERV 13 filters, as the filter is designed to capture even more particles than alternative ratings.

When to replace your 4-inch air filter?

Thicker filters last longer, but a 4-inch filter still needs fresh media over time. Here's a simple guide based on your household.

Asthma or allergies

Every ~4 months

Thicker media traps more, but allergy sufferers still benefit from a fresh 4-inch filter roughly every 4 months.
Pets

Every ~6 months

A 4-inch filter has more room for pet hair and dander, so plan on a change about every 6 months in most homes.
Young children

Every 6–9 months

For homes with young kids, a 4-inch filter typically lasts 6 to 9 months before it needs replacing.

What happens if you don’t replace on time?

Your filter catches dust every day, but it can only hold so much. Once it's full, dirty air keeps circulating and your system has to work harder – leading to problems that spread through your whole home.

Higher energy bills

A clogged filter makes your system work much harder to push air through. That extra effort shows up on your energy bill.
Costly system breakdowns

When air can't flow through, your AC can freeze up in summer and your furnace can overheat in winter.
Stuffy, uncomfortable rooms

A dirty filter weakens your system's airflow, so some rooms end up too hot, too cold, or just plain stuffy.

MERV rating comparison

Recommended for

Comparable ratings

Filtration efficiency

Dust mites

10+ microns

Pollen

10-100 microns

Pet dander

5-10 microns

Lint and fabric fibers

10+ microns

Mold spores

3-10 microns

Fine dust

1-3 microns

Smoke particles

0.3-1 micron

Smog and fine particles

0.1-1 micron

Bacteria

0.3-5 microns

Virus carriers

0.3-1 micron

Wildfire smoke

0.4–2.5 microns

Odors and gases

Molecular level

VOCs

Molecular level

Cooking odors

Molecular level

Learn more

Basic air quality,
standard homes

FPR 5,
MPR 600

90% of common particles

MERV 8 filters

Better air quality, homes with allergies, pets

FPR 7,
MPR 1000-1200

95% of common particles

MERV 11 filters

Superior air quality, health concerns, allergies

FPR 10,
MPR 1500-1900

98% of common particles

MERV 13 filters

Odor control, cooking smells, pet areas

FPR 5 + Carbon,
MPR 600 + Odor

90% of common particles

Odor eliminator filters

What makes Filter King so good?

It comes down to using better materials. Click around to see how we build a stronger filter that actually protects your home.

Front beverage board frame

The diagonal straps die-cut into the frame bond to each pleat tip, keeping them evenly spaced so the filter won't bow.

MERV 13 pleated media

Stops up to 98% of particles passing through, including dust mites, pollen, pet dander, and mold spores, as well as fine dust, smoke, and bacteria.

Wire support grid

An expanded wire grid bonds to the media, stopping the pleats from shifting or pulling away under airflow.

Back beverage board frame

The same heavy-duty, moisture-resistant beverage board on the exit side holds its shape and keeps a tight seal in your vent or wall slot.

Activated carbon layer

A layer of activated carbon absorbs odor molecules from cooking, pets, and chemical fumes – catching what the filter media alone can't.

Customer reviews

How to find your air filter size?

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.

Measuring

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.

How to install 16x25x4 air filter?

Installing 16x25x4 air filters couldn't be easier. Just make sure to align the arrow printed on the side with the airflow direction!

1

Remove the air filter from the package
2

Locate the arrow and point it in the direction of the fan
3

Slide the filter in to the slot of the central unit
4

For return grills, insert the filter into the grill, pointing the arrow inwards

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Need to remember to reorder every time you run out
Forget to reorder, and a dirty filter can drive up your energy bills.

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Frequently asked questions

Frequently Asked Questions (FAQs)

What is the actual size of a 16x25x4 air filter?

The actual size of 16x25x4 air filters is smaller than the nominal size. In this case, it is 15.5 x 24.5 x 3.75 inches, but we can also manufacture a custom size tailored to your specific HVAC unit if this size doesn't work.

Are 16x25x4 filters harder to install than wider 4-inch filters?

No. 16x25x4 air filters can be installed in the same way as wider filters or 1-inch filters. With the right fit, simply slide the filter into the filter slot with the airflow arrow pointed directly towards the filter or blower. Replacing a filter that is the proper size only requires a few minutes at most.

Do I need special housing for 16x25x4 air filters?

Yes. You will require filter housing or a media cabinet that's designed for 4-inch filters. Standard 1-inch filter slots are often too narrow for 4-inch filters. It's essential to reference your filter's user manual if you're unsure of the size you require in your home.

Can I cut a 20x25x4 filter down to 16x25x4 size?

No. It's never recommended to cut your filter down to size. Filters should not be trimmed or modified, as this can compromise the frame's filter media and overall integrity. This can result in unfiltered air bypassing the filter, reducing your home's IAQ, or Indoor Air Quality.

Will switching to MERV 13 from MERV 8 in 16x25x4 size cause problems?

Most often, no. The 16x25x4 provides enough surface area to handle higher or lower MERV ratings without restricting airflow. Older or undersized blowers may benefit from MERV 8 Carbon odor eliminator filters or MERV 11 filters.

How tight should a 16x25x4 filter fit in the slot?

The filter should always fit snug when installing it, whether you're using a MERV 11, MERV 13, or MERV 8 carbon filter. A secure fit will prevent air from bypassing the filter. If a filter is too tight (and not properly fitted), it can result in damage to the filter housing area or cause warping to the filter's frame.

Can I wash my 16x25x4 air filter?

It is not recommended to wash your 16x25x4 air filter. Washing the filter on your own can reduce its effectiveness and cause damage to the filter media.

What happens if I wait too long to change my 16x25x4 filter?

If you wait too long to change your filter, you're more likely to experience higher energy bills and reduced airflow throughout your home. Additionally, waiting too long to replace your 16x25x4 air filters is more likely to result in causing strain on your HVAC system. Clogged filters require the system to work harder, which can reduce the overall lifespan of your HVAC system and furnace itself.

16x25x4 MERV 13 Air Filters

Choose filter quality

Superior

Select quantity

16x25x4 air filter description

What does MERV 13 protect against?

Choose how to buy

Who is the 16x25x4 MERV 13 best for?

When to replace your 4-inch air filter?

Asthma or allergies

Pets

Young children

What happens if you don’t replace on time?

Higher energy bills

Costly system breakdowns

Stuffy, uncomfortable rooms

MERV rating comparison

What makes Filter King so good?

Front beverage board frame

MERV 8 pleated media

MERV 11 pleated media

MERV 13 pleated media

MERV 8 pleated media

Wire support grid

Back beverage board frame

Activated carbon layer

Customer reviews

How to find your air filter size?

Nominal size

Actual size

Measuring

How to install 16x25x4 air filter?

Set it and forget it with auto-delivery

Without auto-delivery

With auto-delivery (save 5%)

Frequently Asked Questions (FAQs)

What is the actual size of a 16x25x4 air filter?

Are 16x25x4 filters harder to install than wider 4-inch filters?

Do I need special housing for 16x25x4 air filters?

Can I cut a 20x25x4 filter down to 16x25x4 size?

Will switching to MERV 13 from MERV 8 in 16x25x4 size cause problems?

How tight should a 16x25x4 filter fit in the slot?

Can I wash my 16x25x4 air filter?

What happens if I wait too long to change my 16x25x4 filter?