Shop by





Actual Size: 15.38x25.5x5.25"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 15.38x25.5x5.25"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 15.38x25.5x5.25"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
At Filterbuy, we don't cut corners—we craft high-quality air filters right here in the USA and ship them to your doorstep for free. No delays, no gimmicks—just clean air, made easy. With thousands of five-star reviews and filters built for real life & every HVAC system, it's no wonder why over 4 million families trust Filterbuy.

Proudly Made In The USA

Fast, Free Shipping on Every Order

Premium Materials That Go The Distance

85,000+ 5-Star Reviews From Happy Customers

Save Up to 70% Per Filter with Packs




Measure length × width × depth with a tape measure to find the actual size.

Round up each dimension to the nearest whole number to get the nominal size. Example: 15.38x25.5x5.25" in → 16x25x5 nominal.

Search by nominal size on our site for the best fit.


5″ filters give you maximum filtration with minimal maintenance — lasting up to 12 months while handling higher MERV ratings without restricting airflow.
Sizing note:

If the filter you buy doesn't fit, we'll send you a better size.
MERV stands for Minimum Efficiency Reporting Value—but don't let the technical name fool you. It's just a way to rate how well an air filter traps stuff like dust, pollen, pet dander, and smoke. The higher the MERV number, the more particles it catches—and the cleaner your air will be.

Comparable to:FPR: 4-7
MPR: 600-1000
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Comparable to:FPR: 6-9
MPR: 1200-1550
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Comparable to:FPR: 10
MPR: 1900-2800
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Bacteria























We build every Filterbuy filter to deliver reliable 90-day performance—thanks to smart design and premium materials that do the heavy lifting. Here's what makes the difference:
More pleats = more surface area to capture dust and debris, keeping your air cleaner longer.
Pleats are magnetized to attract and trap microscopic particles—like pet dander, pollen, and smoke.
Engineered to resist warping in extreme temperatures and high humidity.

A layer of metal reinforcement keeps pleats evenly spaced and structurally sound—no sagging, even at high airflow.
Assembled with care. Built to perform. Ships fast, free, and reliably from our U.S. facilities.

Turn Off Your HVAC SystemSafety first.

Remove The Old FilterLook for the airflow arrow and make note of the direction.

Slide In Your New FilterArrow should point toward the system (same direction as before).

Turn Your System Back OnAnd enjoy the fresh, clean air.
Not all air filters are created equal. Pleated filters don't just last longer—they actually clean your air better. Here's how they stack up:

Efficiency:
High (MERV 8–13) – Traps more particles
Lifespan:
90 days – Long-lasting performance
Air Quality:
Excellent – Cleaner, healthier air
Materials:
Recyclable and durable

Efficiency:
Low (MERV 4 or less) – Misses small stuff
Lifespan:
30 days or less – Replace often
Air Quality:
Minimal – Basic protection only
Materials:
Thin, flimsy, and not recyclable
Pleated filters are a no-brainer—more protection, less hassle, and better air for your home.
Changing your filter on time keeps your HVAC system running efficiently—and helps protect your lungs from dust, allergens, and airborne irritants. Here's how often to swap it out based on your needs:

For most homes without pets or special air quality concerns. Great for general upkeep and energy efficiency.

Shedding fur, dander, and allergy triggers can build up fast. Changing your filter every two months helps keep the air fresher and symptoms at bay.

For households affected by smoke, pollution, or respiratory conditions, monthly changes ensure maximum protection.
| Nominal Size | 16 x 25 x 5 inches |
| Actual Size | 15.38 x 25.5 x 5.25" inches |
| Filter Type | Pleated |
| Media | Electrostatically Charged |
| Frame | Beverage Board |
| MERV Ratings Available | 8, 11, 13 |
| Lifespan | Up to 12 Months |
| Origin | Made in USA |
You're doing everything right at bedtime — yet you still wake up congested or groggy. The problem isn't your sleep routine. It's what you're breathing all night.
After manufacturing millions of air filters, we've heard this story countless times: customers tell us they finally sleep through the night after upgrading to MERV 13 filtration. It makes sense. Standard MERV 8 filters let dust mite debris, pet dander, and fine particulates pass straight into your bedroom air — the same irritants that cause nighttime congestion and morning fatigue.
A MERV 13 16x25x5 Five Seasons air filter captures up to 98% of these airborne sleep disruptors before they reach you. This guide explains the air-sleep connection, why MERV 13 hits the sweet spot for residential systems, and what our customers experience after making the switch.
A MERV 13 16x25x5 Five Seasons air filter is a high-efficiency replacement filter designed for Five Seasons media air cleaner cabinets including models M0-1056, M8-1056, and 455602-019.
Key specifications:
Nominal size: 16" x 25" x 5"
Actual size: 15-3/4" x 24-3/4" x 4-3/8"
MERV rating: 13
Efficiency: Captures 85%+ of particles 1.0–3.0 microns
Replacement interval: Every 3–6 months
What MERV 13 captures:
Dust mite debris
Pet dander
Mold spores
Bacteria
Smoke particles
Fine particulates down to 0.3 microns
Why it matters:
After manufacturing millions of filters, we recommend MERV 13 for customers focused on air quality and sleep improvement. The five-inch depth provides extended filtration capacity without the airflow restriction that higher-rated filters cause in residential systems.
MERV 13 hits the sweet spot — hospital-grade particle capture that works with your equipment, not against it.
Your bedroom air cycles through your HVAC system five to seven times every night. What your filter captures directly impacts what you breathe for seven to eight hours. Most people never consider this.
MERV 13 captures 85% or more of fine particulates causing nighttime congestion. This includes:
Dust mite debris
Pet dander
Mold spores
Irritants down to 0.3 microns
Standard MERV 8 filters let most of these pass through.
Higher isn't always better. MERV 14, 16, and HEPA filters can restrict airflow in residential systems. Common problems include frozen coils and stressed motors. MERV 13 delivers the filtration your lungs need without compromising equipment.
The 16x25x5 Five Seasons size provides three to six months of consistent performance. Extended-depth filters hold more particulates than one-inch filters. Cleaner air longer. No gradual symptom buildup.
Waking up congested or unrested? Your air filter deserves a closer look. After helping millions of customers, we've seen this pattern repeatedly. People upgrade to MERV 13 and notice better sleep within a week. It's one of the simplest changes you can make.
Most people focus on mattresses, pillows, and room temperature when trying to improve sleep — but the air you breathe overnight matters just as much. Airborne allergens like dust mites, pet dander, pollen, and mold spores trigger nasal congestion, post-nasal drip, and inflammatory responses that fragment sleep cycles. According to the American Academy of Sleep Medicine, allergic rhinitis is one of the most common yet overlooked contributors to poor sleep quality.
A high-efficiency air filter is the first line of defense. Every time your HVAC system cycles, it pulls bedroom air through the filter — either trapping those irritants or letting them recirculate. The difference between restless nights and restorative sleep often comes down to what your filter actually captures.
MERV 13 is the highest efficiency rating recommended for most residential HVAC systems. At this level, the filter captures at least 85% of particles between 1.0 and 3.0 microns and over 90% of particles between 3.0 and 10.0 microns. That range covers the specific irritants most responsible for nighttime breathing disruption:
Dust mite debris and fecal matter (major bedroom allergen)
Mold spores that thrive in humid HVAC environments
Fine pollen particles that bypass lower-rated filters
Pet dander small enough to stay airborne for hours
Bacteria and some virus-carrying droplets
Lower-rated filters — MERV 8 or below — allow a significant percentage of these particles to pass through and recirculate. You may not notice the difference during the day, but overnight, when your breathing slows and deepens during REM sleep, even low concentrations of airborne irritants can trigger micro-arousals that reduce sleep quality without fully waking you.
The 16x25x5 Five Seasons replacement filter offers a key advantage over standard one-inch filters: depth. At five inches thick, it holds substantially more filtration media, which means two important things for sleep quality.
First, it maintains consistent airflow longer. A clogged filter restricts airflow, forcing your system to work harder and circulate air less efficiently — which means fewer air exchanges per hour in your bedroom. The extended capacity of a five-inch filter keeps airflow steady for months rather than weeks.
Second, it sustains MERV 13 capture efficiency over a longer service life. One-inch MERV 13 filters can load up quickly and begin restricting airflow within 30 to 60 days, especially in homes with pets or high dust levels. The 16x25x5 format typically lasts six to twelve months depending on household conditions, delivering reliable filtration throughout its lifespan.
Getting the most out of a MERV 13 16x25x5 Five Seasons filter starts with proper installation and a few supporting habits. Make sure the filter is seated correctly with the airflow arrow pointing toward the blower motor. Run your system's fan on a regular cycle — or set it to "on" rather than "auto" for an hour before bedtime to pre-filter bedroom air.
Keep bedroom doors open when the system runs so filtered air circulates freely. Check your filter every three to four months even though it has extended capacity — homes with multiple pets, ongoing construction, or high outdoor pollen counts may need earlier replacement. A clean, properly rated filter paired with consistent HVAC operation creates the kind of low-particulate sleeping environment that supports uninterrupted, deeper sleep cycles night after night.

"After helping millions of customers find the right filter, the sleep improvement feedback we get from MERV 13 upgrades is the most consistent — people don't realize how much airborne irritants affect their rest until they stop breathing them all night."
Don't take your indoor air for granted — and don't take filter claims at face value either. After manufacturing millions of filters and hearing from customers across the country, we know the questions that matter most when you're upgrading to MERV 13. These seven resources come from the same authoritative sources we reference when developing our products and advising families on filtration decisions.
Source: U.S. Environmental Protection Agency
We're obsessed with MERV ratings for a reason — they're the industry standard for measuring what a filter actually captures. The EPA breaks down the scale and explains why they recommend MERV 13 or higher for homes where air quality matters. This is the foundation for understanding what you're really buying.
Resource: https://www.epa.gov/indoor-air-quality-iaq/what-merv-rating
Source: ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers)
Here's something customers ask us constantly: "Will MERV 13 work with my system?" ASHRAE literally created the MERV rating system, and their technical guidance addresses the airflow and pressure drop concerns we hear about every day. Before upgrading, this resource helps you confirm your Five Seasons unit can handle higher-efficiency filtration.
Resource: https://www.ashrae.org/technical-resources/filtration-and-disinfection-faq
Source: American Lung Association
When we say filtration protects your greatest assets — your family, your home, your HVAC system — we mean it. The American Lung Association recommends MERV 13 or higher for capturing the particulate matter that triggers respiratory problems. If allergies, asthma, or lung health are driving your air filter decision, this is essential reading.
Resource: https://www.lung.org/clean-air/indoor-air/protecting-from-air-pollution/air-cleaning
Source: National Institutes of Health (PubMed Central)
Customers tell us they sleep better after upgrading to MERV 13 — and the science backs them up. This peer-reviewed research examines how indoor air pollution disrupts sleep across all age groups. We reference studies like this when explaining why what you breathe at night matters as much as your mattress or room temperature.
Resource: https://pmc.ncbi.nlm.nih.gov/articles/PMC7877449/
Source: Building America Solution Center (U.S. Department of Energy)
After over a decade of manufacturing, we've seen what happens when homeowners install filters their systems can't handle — frozen coils, stressed blower motors, higher energy bills. The DOE's technical guide covers the same pressure drop and compatibility factors we consider when recommending filter upgrades. Use it to protect both your air quality and your equipment.
Resource: https://basc.pnnl.gov/resource-guides/high-merv-filters
Source: ENERGY STAR
A clean filter isn't just about air quality — it's about efficiency. ENERGY STAR explains how proper filter selection and timely replacement can reduce your cooling costs by 5% to 15%. We tell customers the same thing: a clogged filter forces your system to work harder, wasting energy and shortening equipment life.
Resource: https://www.energystar.gov/saveathome/heating-cooling
Source: Filterbuy
We built this guide from everything we've learned manufacturing filters and working with millions of customers. It breaks down which MERV rating makes sense for different household situations — pets, allergies, smokers, standard use — so you can choose with confidence. Because protecting your family shouldn't require guesswork.
Resource: https://filterbuy.com/resources/air-filter-basics/which-merv-rating-should-I-use/
After helping millions of customers choose the right filter, we've heard the same story countless times. People upgrade to MERV 13 and notice they're sleeping better within a week. That's not a coincidence — the research backs up exactly what our customers experience.
The U.S. Environmental Protection Agency reports that Americans spend approximately 90% of their time indoors. Indoor pollutant concentrations are often 2 to 5 times higher than outdoor levels.
We do the math with customers all the time:
Seven to eight hours of sleep per night equals one-third of your life
Your bedroom air is your single largest environmental exposure
Most people never consider what their filter actually lets through
The air you breathe while sleeping isn't background noise. It's the biggest factor in your daily respiratory health.
Source: U.S. Environmental Protection Agency — Indoor Air Quality
URL: https://www.epa.gov/report-environment/indoor-air-quality
The Centers for Disease Control and Prevention reports that roughly 35% of American adults don't get the recommended seven hours of sleep. Insufficient sleep connects to serious health risks:
Heart disease
Diabetes
High blood pressure
Frequent mental distress
Here's what we find interesting. Customers contact us about morning congestion, scratchy throats, and restless nights. They've already tried:
Humidifiers
Allergy medications
New pillows
Different mattresses
Most never considered that their HVAC filter was cycling dust mite debris, pet dander, and fine particles through their bedroom five to seven times every night.
Once they upgrade to MERV 13 and symptoms improve, they realize the problem was never their sinuses. It was what they were breathing.
Source: Centers for Disease Control and Prevention — Prevalence of Healthy Sleep Duration Among Adults
URL: https://www.cdc.gov/mmwr/volumes/65/wr/mm6506a1.htm
The EPA's technical guidance confirms what we've validated through manufacturing and testing. MERV 13 efficiency rates:
85% or higher for particles 1.0–3.0 microns (PM2.5)
50% or higher for particles 0.3–1.0 microns
90% or higher for particles 3.0–10.0 microns (PM10)
In practical terms, MERV 13 captures:
Dust mite fragments
Pet dander
Mold spores
Fine particulates that cause respiratory irritation
Standard MERV 8 filters let most of these pass straight through.
We've seen customers try to jump to MERV 16 or HEPA thinking more is always better. Those filters often cause problems in residential systems:
Restricted airflow
Frozen coils
Stressed blower motors
Higher energy bills
MERV 13 hits the efficiency level that improves air quality without compromising your equipment. That's why we recommend it most often.
Source: U.S. Environmental Protection Agency — Indoor airPLUS Technical Bulletin on Filtration
URL: https://www.epa.gov/sites/default/files/2020-06/documents/2019.11_tech_bulletin_filtration.pdf
These statistics validate what customers have told us for over a decade:
Indoor air is often more polluted than outdoor air
One-third of adults already struggle with sleep
MERV 13 captures the specific particle sizes causing nighttime irritation
The connection is straightforward. Better filtration leads to better air. Better air leads to better sleep.
After manufacturing millions of air filters and hearing from customers across the country, we've developed a clear perspective on the air quality-sleep connection. It's not complicated. It's consistently overlooked.
The research connects four key facts:
You spend 90% of your time indoors with pollutant levels 2 to 5 times higher than outside
Your bedroom air cycles through your HVAC system five to seven times every night
One-third of American adults already struggle to get adequate sleep
MERV 13 captures 85% or more of fine particulates causing nighttime respiratory irritation
The conclusion writes itself. What you breathe while you sleep directly affects how you feel when you wake up.
Here's what we've come to believe:
Most sleep problems blamed on mattresses, allergies, or stress have an air quality component that goes unaddressed.
Customers contact us about:
Morning congestion
Scratchy throats
Restless nights
Waking up unrested
They've already tried humidifiers, antihistamines, and new pillows. Everything except examining what their HVAC filter actually captures.
When they upgrade to MERV 13 and symptoms improve within a week, it changes how they think about indoor air entirely.
We could sell more expensive filters. MERV 14, 15, 16, and HEPA all exist. But after seeing what actually works in residential systems, we consistently recommend MERV 13 for sleep and air quality improvement.
Three practical reasons:
Captures what matters. Traps dust mite debris, pet dander, mold spores, and fine particulates down to 0.3 microns
Protect your equipment. Higher-rated filters restrict airflow, causing frozen coils, stressed motors, and higher energy bills
Delivers consistent performance. The 16x25x5 Five Seasons size provides three to six months of effective filtration
MERV 13 isn't the highest rating available. It's the right rating for most homes.
We're obsessed with indoor air quality because we've seen what happens when people finally address it:
Customers who spent years treating symptoms start sleeping through the night
Families with allergy sufferers notice reduced medication use
Homeowners finally connect their HVAC system to their health
A MERV 13 16x25x5 Five Seasons air filter won't solve every sleep problem. But if airborne irritants are disrupting your rest, upgrading your filtration is one of the simplest changes you can make.
You protect your family in dozens of ways every day. Understanding what you're breathing all night is one more.
The research is clear. The customer feedback is consistent. Now take action.
These five steps take less than 30 minutes total. Most customers notice a difference within the first week.
1. Check your current filter right now. Pull it out and look at it. Replace it if you see any of these:
Visibly gray or discolored media
Matted dust and debris buildup
You can't remember the last replacement date
Every night on a loaded filter means another night breathing what it can no longer capture.
2. Verify your Five Seasons cabinet model. The 16x25x5 MERV 13 fits these Five Seasons media air cleaner cabinets:
M0-1056
M8-1056
455602-019
Find the model number on your cabinet before ordering. This eliminates the most common mistake we see.
3. Measure your existing filter to confirm sizing.
Nominal size: 16" x 25" x 5"
Actual dimensions: 15-3/4" x 24-3/4" x 4-3/8"
Pull the old filter. Measure it. Five minutes of verification saves the frustration of ordering the wrong size.
4. Order your MERV 13 16x25x5 Five Seasons replacement from Filterbuy. We manufacture this filter in-house and ship direct. No middlemen. No markup. The same filter we've recommended to millions of customers focused on air quality and better sleep.
5. Set a calendar reminder for three months out. The five-inch depth can last up to six months. We still recommend a visual check at three months — especially if you have:
Multiple pets
High-pollen environment
Continuous fan operation
Nearby construction or renovation
Staying ahead of filter changes keeps air quality consistent and sleep uninterrupted.

A: The 16x25x5 fits these Five Seasons media air cleaner cabinets:
M0-1056
M8-1056
455602-019
Actual filter dimensions measure approximately 15-3/4" x 24-3/4" x 4-3/8".
Important: Nominal size and actual size are different. We tell customers this constantly because it's the most common ordering mistake we see. Always verify your cabinet specifications before ordering.
How to confirm compatibility:
Pull out your existing filter
Measure the actual dimensions
Check the part number on the frame
Compare to your equipment manual
Five minutes of verification saves the hassle of returns.
A: Replace every three to six months under normal conditions.
The five-inch depth holds significantly more particulates than one-inch filters. That's why replacement intervals are longer.
After working with customers across every climate and household situation, we've learned that "normal conditions" vary widely.
Factors that shorten filter life:
Multiple pets (especially dogs that shed)
High-pollen regions or seasons
Running your system fan continuously
Homes with renovation or construction dust
Best indicator: Pull your filter and look at it. Visibly gray and loaded with debris means it's time — regardless of months elapsed.
We've seen filters last six months in one home and need replacement in eight weeks in another. Your household is unique.
A: This is the question we get most often. The answer is reassuring for Five Seasons owners.
Five Seasons media air cleaner cabinets are specifically designed for higher-efficiency filters. The five-inch depth provides greater surface area than one-inch filters. This allows adequate airflow even at MERV 13 ratings.
We've seen what happens when customers install high-MERV filters in systems not built for them:
Frozen coils
Stressed blower motors
Uneven temperatures
Higher energy bills
Five Seasons systems generally handle MERV 13 well. Still, check your equipment manual.
Signs your system is struggling with airflow restriction:
Longer run cycles than usual
Rooms that won't reach temperature
Ice forming on evaporator coils
Unusual sounds from the blower
If you notice these after installing a new filter, consult an HVAC technician. Sometimes it's ductwork or other system issues — not the filter.
A: We manufacture all three ratings in the 16x25x5 Five Seasons size. After years of customer feedback, here's how we explain the difference:
Rating
Captures
Best For
MERV 8
Dust, pollen, lint, larger particles
Homes without pets or allergy concerns
MERV 11
Pet dander, dust mite debris, mold spores
Households with pets or mild allergies
MERV 13
Fine particulates down to 0.3 microns, bacteria, smoke, microscopic allergens
Sleep issues, respiratory sensitivities, health-focused households
Our honest perspective: Customers who contact us about sleep issues or morning congestion see the biggest improvement jumping from MERV 8 to MERV 13.
The difference between MERV 11 and MERV 13 is measurable but less dramatic.
Upgrading for health or sleep reasons? MERV 13 is where we point people.
A: We can't make medical claims. But we can share what customers have told us for over a decade.
The pattern is remarkably consistent:
Customers contact us about morning congestion, scratchy throats, or restless sleep
They've already tried humidifiers, allergy medications, and new pillows
They upgrade to MERV 13
Within one week, they notice a difference
Improvements customers report:
Less stuffiness
Fewer middle-of-the-night wake-ups
More energy in the morning
The science makes sense:
Your bedroom air cycles through your HVAC system five to seven times per night
MERV 13 captures 85% or more of fine particulates
This includes dust mite debris, pet dander, and mold spores
These are the exact irritants triggering nighttime respiratory issues
Remove those from your breathing air. Your body focuses on rest instead of fighting inflammation.
Is MERV 13 a cure for sleep problems? No.
But if airborne irritants are disrupting your sleep, upgrading your filter is one of the simplest interventions you can try. After helping millions of customers, we've seen it work too many times to dismiss.
Stop breathing the airborne irritants disrupting your sleep and start waking up refreshed. Shop Filterbuy's MERV 13 16x25x5 Five Seasons air filter now and experience the difference cleaner air makes every night.