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White Rodgers 16x25x4 Air Filters

Actual size: 15.5 x 24.5 x 3.75 inches

Out of stock

16x25x4 air filter description

Performance specifications

  • Nominal size
    16 x 25 x 4 inches
  • Actual size
    15.5 x 24.5 x 3.75 inches
  • SKU
    FK16x25x4-M8
  • Thickness
    4 inches
  • Filter type
    Pleated
  • Frame type
    Rigid cardboard
  • Suitable for
    Media air cleaners
  • Application
    Residential / commercial use
  • MERV rating
    MERV 8
  • MPR rating
    MPR 600
  • FPR rating
    FPR 5
  • Filtration efficiency
    90%
  • Odor eliminator
    No
  • Captured particle size
    3-10 microns
  • Capacity
    Standard capacity
  • Protection from
    Common allergens, dust, pet dander, mold

MERV rating comparison

Scroll right to see more

 
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
Odors and gases
Molecular level
VOCs
Molecular level
Cooking odors
Molecular level
Learn more
MERV 8
Basic air quality,
standard homes
FPR 5,
MPR 600
90% of common particles
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
MERV 11
Better air quality, homes with allergies, pets
FPR 7,
MPR 1000-1200
95% of common particles
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
MERV 13
Superior air quality, health concerns, allergies
FPR 10,
MPR 1500-1900
98% of common particles
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
MERV 8 Carbon
Odor control, cooking smells, pet areas
FPR 5 + Carbon,
MPR 600 + Odor
90% of common particles
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
No
Yes
Yes
Yes

Customer reviews

How to find your air filter size?

Check the label on your current filter or use a tape measure to determine the length, width, and thickness. Just make sure you know the difference between nominal and actual size.

Nominal Size: 16x25x4

"
Filter Blank
"
"

Actual Size: 15.5x24.5x3.75

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
    1

    Remove the air filter from the package

  • 2
    2

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

  • 3
    3

    Slide the filter in to the slot of the central unit

  • 4
    4

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

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16x25x4 air filters for compact systems with extended filtration and durability

For small and medium-sized homes, the 16x25x4 air filter is a popular choice. These air filters can be found in single-family homes, townhouses, and even condos. Its 4-inch depth provides enhanced filtration without restricting airflow throughout the rest of your home. With 1-inch filters, it's difficult to capture all particles, which can significantly reduce your home's IAQ, or Indoor Air Quality. A 4-inch depth lasts longer and captures more particles while preserving the air quality in your home in between filter replacements.

The 16x25x4 air filter is ideal for homeowners who seek balance between compact filters and advanced capturing capabilities while living in compact spaces or smaller to medium-sized homes. The 16x25x4 air filter supports enhanced pleated media, improving air quality and HVAC efficiency simultaneously. Whether you're in the market for higher MERV ratings (without sacrificing efficiency) or you want to keep your air cleaner between filter replacements, the 16x25x4 air filter is highly recommended.

The good news is that the 16x25x4 air filter is widely manufactured by well-known brands, from Carrier and Trane to Lennox and Goodman.

HVAC systems that use 16x25x4 air filters

A 16x25x4 air filter covers more surface area than 1-inch filters and is available from popular brands such as Trane, Lennox, Carrier, Rheem, Bryant, and Goodman. You'll likely find this size in the following:

  • Return air filter racks that have been built for 4-inch media.
  • Mid-efficiency HVAC systems or furnaces and air handlers
  • Media cabinets including both the Honeywell F100/F200 series and Aprilaire 2400. Additional compatible configurations include Lennox HCC16-28 and Carrier/Bryant EZ Flex cabinets. These cabinets are specifically designed for 4-inch pleated filters and come with sealed doors to prevent air bypassing or leaking.

The 16x25x4 air filter is compatible with smaller to mid-sized HVAC systems and works well within media cabinets and more compact spaces. The 16x25x4 air filters work well in high-efficiency media filter cabinets. These cabinets typically sit between the furnace or air handler and the return duct in your home.

Check your filter cabinet's label or your HVAC user manual to determine which size filter your system requires. You can also inspect an existing filter's dimensions, which are often printed directly on its frame. The right fit is essential for performance efficiency and to prevent airflow bypass, where unfiltered air leaks.

Performance characteristics of 16x25x4 filters

The 4-inch depth of the 16x25x4 air filters maximizes surface area with a high pleat count. The pleated design increases filtration capabilities, which ensures an extended lifespan and a much stronger ability to hold dust, debris, and particles.

This depth improves airflow balance while distributing the air across the pleats. This helps to reduce the strain on your home's HVAC system and/or your HVAC blower.

Compared to 1-inch air filters, the 16x25x4 air filter delivers better airflow, distribution, and an extended lifespan. It guarantees superior protection for your HVAC system without causing strain.

MERV rating selection for 16x25x4 applications

Selecting the right MERV (Minimum Efficiency Reporting Value) rating for your filter is another decision you'll make as a homeowner. ASHRAE developed the MERV rating system to set industry standards for filter testing, performance, and HVAC compatibility.

At Filter King, we offer MERV 8, MERV 11, MERV 13, and MERV 8 Carbon (Odor eliminator) options for the 16x25x4 air filter.

  • MERV 8: Ideal for standard residential systems and homeowners seeking balanced airflow. Excellent filtration to capture pollen, lint, and dust without reducing or restricting airflow.
  • MERV 11: Provide enhanced filtration, ideal for pet owners, dust mites, and those who want to trap and eliminate mold spores. MERV 11 air filters are optimal for households where allergies are present.
  • MERV 13: Provide hospital-grade protection against smoke, smog, allergens, and bacteria. With a 4-inch pleated depth, MERV 13 filters maintain airflow much better than alternative, 1-inch air filters.
  • MERV 8 Carbon (Odor Eliminator): Built using advanced carbon materials, which not only trap allergens and particles, but neutralizes household odors. MERV 8 Carbon is ideal for home with pets, plenty of cooking, and even odors from smoke.

4-Inch air filters, such as the 16x25x4 air filter, offer significantly more surface area for air to pass through, compared to 1-inch filters. This surface area allow air to flow more evenly while reducing resistance, even though the filter material is denser, such as with a MERV 11 or MERV 13 filter. 4-Inch filters are designed to capture more pollen, bacteria, mold spores, and smoke. The 16x25x4 air filter helps clean surrounding air without overworking your HVAC system's blower motor.

Common applications for 16x25x4 air filters

Common applications for 16x25x4 air filters are found in smaller to medium-sized households with traditional HVAC systems in place. The 16x25x4 air filters are suitable in spaces with limited cabinet space. You can often find the 16x25x4 air filters in:

  • Townhouses and condos
  • Single-family homes with compact or limited media cabinet space
  • HVAC units installed in smaller utility rooms or even in closets
  • Air handlers that are designed specifically for high-efficiency 4-inch filters
  • Whole-home filtration cabinets, which are directly connected to return vents or connected directly to your furnace.

Best 16x25x4 air filters by use case

Different homes require various sizes of air filters. Choosing the right 16x25x4 air filters for your home will depend on your specific needs.

Standard residential: MERV 8 pleated filters provide the best airflow balance for everyday filtration and protection. MERV 11 is more suitable if you have additional particles to capture from pet dander and outdoor allergies.

Pet owners: MERV 11 captures dander and pet hair before allowing them to flow through your air ducts.

Allergy sufferers: MERV 13 is an ideal choice for filtering airborne irritants and fine allergens, including pet dander, pollen, and mold spores.

Odor elimination: MERV 8 Carbon (Odor Eliminator) filters help eliminate odors in addition to capturing smells from smoke, pets, and cooking. Merv 8 Carbon air filters are ideal if you're seeking an air filter that helps your home smell fresh and clean year-round.

Compact high-efficiency systems: Both the MERV 11 and MERV 13 filters perform optimally in tight return spaces or smaller media cabinets while ensuring your system's efficiency for an extended time.

Replacement schedule considerations for 16x25x4

Before replacing your air filters, it's important to know which filters are right for you and the actual size you require for your home. Compared to 1-inch filters which require a replacement every 1 to 3 months, a 4-inch filter typically lasts up to 6 months and in some cases, even 9–12 months in homes without excessive dust or allergens. Some factors that impact 16x25x4 air filter longevity include:

  • Homes with pets and dander
  • Homes where smokers reside
  • Locations where allergens are prevalent, depending on the time of year
  • The time spent running your HVAC system. Systems that run year-round may require a 4-inch 16x25x4 air filter for best results.

If you find yourself running your system year-round, you may require a new filter every 3 to 4 months. For energy-efficient systems or occasional use, a 16x25x4 air filter may allow for extended use and less frequent replacements.

Many homeowners change their air filters in the spring and fall seasons, aligning their systems with the temperature changes (depending on your location). These times are also ideal to inspect your HVAC system with routine maintenance or a seasonal tune-up. Routine maintenance is recommended during shifts of humidity and pollen, which will help keep your system running as efficiently as possible throughout the entire year.

A few signs that your 16x25x4 filter needs changing include:

  • Higher energy bills that occur unexpectedly without using additional electricity in the home
  • Reduced airflow coming from your vents
  • Longer system cycles
  • Visible dust buildup on the exterior of the 16x25x4 air filter itself.

Inspecting your air filter every 30 to 45 days can help you determine how long it will last, depending on your home's size and the allergens, dust, and particles it captures in shorter periods of time.

Installation tips specific to 16x25x4 filters

Installing your 16x25x4 air filter requires a proper fit for optimal performance. This size is commonly found in furnace filter slots and return air cabinets. In some cases, whole-house media cabinets are specifically designed for 4-inch air filters. In some systems, the 4-inch pleated filter is installed between the air handler and return duct, trapping airborne particles before they find their way to the HVAC system's coils or blower.

When working with a media cabinet to fit your 16x25x4 air filter, keep the following considerations in mind:

  1. Check the model label of an existing filter to determine which filter you require.
  2. Inspect the access door size to confirm a 16x25x4 air filter is ideal.
  3. Compare brands such as Honeywell, Aprilaire, Carrier, and Lenox to find the right filter. These brands typically include slide-in tracks, which help make replacing your air filter a breeze.

Anytime you're installing a new 16x25x4 air filter, it's essential to verify the airflow direction. Air filters have arrows printed on their frames, which indicate which way the air should flow and which way the filter should be installed. Verify that the arrow printed on the filter is facing toward the air handler or furnace. If you install the 16x25x4 air filter backwards, it will reduce your HVAC system's efficiency and restrict proper airflow.

Handling 4-inch filters requires precise measurements before sliding them into place. Always avoid bending or warping the filter, as the correct measurements make all the difference. Insert one edge first during the installation of your filter while guiding it along the track for a simple replacement. The right filter size will not allow for warping along the edges or gaps, which can disrupt airflow or result in air leaks.

Turn on your filter to ensure steady airflow throughout your vents once you install your new 16x25x4 air filter.

Cost analysis for 16x25x4 replacement filters

Investing in a 16x25x4 air filter provides an extended lifespan to your filter and HVAC system, capturing more particles with a larger surface area compared to traditional 1-inch air filters. A 16x25x4 air filter lasts between 3-6 months, and in some cases, even up to 12 months (in low-dust homes). The lifespan of an 16x25x4 air filter will greatly depend on your home's environment and your location, as some homes are more predisposed to allergens and mold spores than other homes and locations.

The cost of a 4-inch air filter (such as the 16x25x4 air filter) averages a few dollars per month. It's practical and prevents poor air quality while also ensuring your HVAC system runs efficiently year-round.

For bulk purchasing savings, you can purchase your 16x25x4 air filters in bulk, significantly reducing your per-unit cost. At Filter King, we provide our customers with the option to purchase filters in bulk to save on their investments while protecting their home's IAQ, or Indoor Air Quality, throughout all seasons. It's possible to save up to 50% or more on air filters when purchasing them in bulk.

If you're determined to extend the replacement cycles of your air filters, consider Filter King's subscription solution. Our subscription model helps eliminate the need to remember replacement dates by automatically shipping your 16x25x4 air filters to your home at the appropriate times. Signing up for a subscription for your air filters results in discounted rates and free shipping, which provides both long-term value and convenience.

A 4-inch filter, such as the 16x25x4 air filter, offers long-term value for homeowners or condo and townhouse owners:

  • Reduces strain on the HVAC system's blower
  • Extended filter life and requires fewer replacements
  • Captures more particles with an extended surface area

Why our 16x25x4 air filters deliver superior value

Our 16x25x4 air filters are built using premium media, supported by a frame that resists collapse, warping, and moisture. The 4-inch pleated design traps allergens, airborne contaminants (including VOCs, or Volatile Organic Compounds), and fine dust. Its durable design provides consistent filtration while also delivering structural integrity.

When a filter is labeled "16x25x4", it does not mean that is the precise size of your HVAC's slots. Oftentimes, the pleated design will measure 3 3/4" when investing in a 4" air filter. Our filters are all manufactured to align with traditional and high-efficiency systems with precise measurements, so you're not left confused when the time comes for a replacement.

Filter King takes performance verification very seriously, especially when delivering top-notch filters to our customers. We guarantee MERV rating accuracy, whether you choose a MERV 8, MERV 11, or MERV 8 Carbon filter for odor elimination throughout your home.

Our 4-inch air filters (16x25x4) provide adequate surface area to trap high volumes of airborne contaminants and particles while simultaneously ensuring efficient air circulation, even in homes with plenty of pets, cooking odors, smoke, and allergens. The pleats are evenly spaced and supported to prevent airflow obstruction or collapse of your system. The balance between airflow efficiency and pleat count is key to the performance our filters provide.

At Filter King, we keep 16x25x4 air filters in stock year-round. You'll never worry about finding a replacement filter in stock with Filter King. Whether you choose to purchase air filters in a single purchase or if you prefer signing up for automatically delivered filters using our subscription purchase, you can count on us for a reliable supply for every replacement cycle you encounter.

Selecting your 16x25x4 filter: Quick decision guide

There's no need to complicate the process of choosing the right filter for your home's HVAC system. Here are a few tips to keep in mind:

  • Confirm your air handler or HVAC system is designed for 4-inch filters. Reference your user's manual (or research it online) while checking existing filters for labels that indicate which filter is best for your home.
  • You'll want to consider your household's needs before choosing between a MERV 8, MERV 11, or MERV 13 filter. MERV 8 Carbon filters are also ideal for odor elimination. If you have asthma, allergies, pets, or if you live in a zone that experiences extreme dust, you'll benefit from a higher MERV rating with your filter.
  • The 16x25x4 filter allows for higher MERV ratings without restricting airflow or optimal performance. 4-inch filters last much longer, trap more particles, and protect HVAC systems from becoming overloaded.
  • While the price of investing in a 4-inch filter is more upfront, these filters typically last up to 3 times longer than traditional, 1-inch filters. Additionally, you can also opt for buying your filters in bulk or enrolling in Filter King's subscription serving for discounted filters and free shipping. Yes, it's that simple!
  • Choosing a 16x25x4 filter over 1-inch filters is ideal if you're seeking premium filtration. If you want to replace your filters less frequently, a 16x25x4 air filter is likely the way to go. Keep in mind, the 16x25x4 filter size is ideal for smaller and medium-sized homes with furnaces and systems that accommodate thicker, 4-inch filters. To improve airflow, efficiency, and to extend your equipment's lifespan, go with a 4-inch pleated filter.

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.

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