Best MERV 11 16x22x5 Day and Night Air Filter for Pets?

Pet dander isn't the fur on your couch. The particles that actually trigger allergies are protein fragments between 1 and 10 microns, shed from your pet's skin, saliva, and coat. They're invisible. They stay airborne for hours. And a standard MERV 8 filter lets a significant portion of that size range pass right through.

We've manufactured air filters for over a decade and worked with more than two million households. The pattern we see most often in pet-owning homes is consistent: families change their filter on time, keep the house clean, and still can't figure out why someone keeps sneezing. The culprit is almost always the MERV rating, not the replacement schedule.

The MERV 11 16x22x5 Day and Night filter closes that gap. It captures particles down to 1 micron — the heart of the dander size range — while keeping airflow within the normal operating range of your Day and Night system. This page covers what the rating difference actually means, why the 5-inch format matters, and how to get a full replacement cycle out of every filter.

TL;DR Quick Answers

MERV 11 16x22x5 Day and Night Air Filter

The MERV 11 16x22x5 is a 5-inch whole-house pleated media filter built for Day and Night CMF1620 media cabinets. Its actual dimensions are 15 3/8" × 21 7/8" × 5 1/4". At MERV 11, Filterbuy's electrostatically charged synthetic media captures 95% of airborne particles — including pet dander, pollen, dust mites, mold spores, and fine dust — without restricting airflow in most Day and Night HVAC systems.

Key facts at a glance:

• Nominal size: 16x22x5 | Actual size: 15 3/8" × 21 7/8" × 5 1/4"

• System fit: Day and Night CMF1620 whole-house air cleaner cabinet

• Compatible OEM part numbers: FS1620, M0-1056, MU1620, 9183940, MFAH-S

• Performance equivalent: MPR 1000/1200 and FPR 7

• Replacement interval: Every 90 days for most homes; check at 60 days in pet or allergy households

• Made in the USA: Manufactured in Filterbuy facilities in Alabama, Pennsylvania, Texas, and Utah

Pet dander particles range from 1 to 10 microns. MERV 8 handles that range inconsistently, which is why households with pets and active allergy concerns routinely see better results after upgrading. After a decade of manufacturing and more than two million households served, MERV 11 in a 5-inch format is the combination we recommend most for Day and Night systems where air quality is a priority.

Top Takeaways

• Actual dimensions: 15 3/8" x 21 7/8" x 5 1/4". Fits Day and Night CMF1620 cabinets and compatible systems from Amana, Coleman, Goodman, York, BDP, Nordyne, and Payne.

• MERV 11 captures particles as small as 1 micron — pet dander, pollen, dust mites, mold spores, fine dust, smoke, and some bacteria.

• 95% particle capture: Filterbuy's electrostatically charged synthetic media captures 95% of airborne particles without restricting airflow in compatible Day and Night HVAC systems.

• A 5-inch filter holds significantly more than a 1-inch filter at the same MERV rating. More particle capacity, lower airflow resistance, longer effective life.

• Replacement schedule: Every 90 days for most homes. Check at 60 days in multi-pet or allergy-sensitive households.

• Construction: 8 pleats per foot. Recyclable beverage board frame. Dual wire backing. Built to hold its shape across the full replacement cycle.

• 100% Made in the USA — Filterbuy manufacturing facilities in Alabama, Pennsylvania, Texas, and Utah.

• Direct OEM replacement for FS1620, M0-1056, MU1620, 9183940, MFAH-S, and Totaline P102-1620 filter part numbers.

What MERV 8 Misses in a Pet Home

MERV 8 captures particles down to roughly 3 microns. Pet dander protein particles sit mostly in the 1 to 3 micron range — a gap that a MERV 8 filter doesn't reliably close. In a pet home, that means a portion of the dander your animals shed every hour cycles back through the air rather than getting captured. For anyone managing pet allergies or asthma, those particles don't have to be concentrated to matter. Cumulative exposure across a full day adds up fast.

MERV 11 covers the gap. It captures particles down to 1 micron at efficiency rates that produce a measurable drop in airborne allergen load — and the 5-inch depth of the 16x22x5 does that without the pressure increase that makes higher MERV ratings a compatibility concern in some residential systems. We've seen this upgrade consistently improve air quality in pet homes where the replacement schedule was already correct. The rating was the missing variable.

The 16x22x5 Size in Day and Night Media Cabinets

The 16x22x5 is the correct size for Day and Night systems using the CMF1620 whole-house air cleaner cabinet. Actual dimensions of 15 3/8" x 21 7/8" x 5 1/4" sit snugly inside the cabinet without gaps. Gaps matter: even a small bypass around the filter edge means a portion of the air your system pulls in never passes through the media at all.

The 5-inch depth carries a real advantage. More media surface area means lower air velocity across the filter face, which keeps pressure drop within normal operating range for Day and Night equipment. The filter also holds more captured particles before performance drops, which is why replacement intervals for this size run longer than for 1-inch formats.

What Changes After the Switch to MERV 11

• A darker-looking filter at 60 days. That's MERV 11 doing its job — capturing what MERV 8 was releasing back into the room.

• Fewer allergy symptoms in households where pets sleep in common areas or bedrooms.

• Less dust between cleaning sessions on furniture, floors, and vent covers.

• No system strain. In compatible Day and Night 5-inch media systems, the pressure increase from MERV 11 falls within normal operating parameters.

How to Install the 16x22x5 Day and Night Filter

1. Turn off the HVAC system before opening the filter cabinet.

2. Slide out the old filter and note which direction the airflow arrow points.

3. Insert the new filter with the airflow arrow pointing toward the system — the same direction as the old one.

4. Close the cabinet door securely and restore power.

5. Set your next reminder or activate Auto Delivery so the replacement arrives before you need it.

The airflow arrow is the one detail that matters most. A reversed filter reduces filtration efficiency and stresses the blower motor over time.

"After a decade of manufacturing MERV 11 filters and tracking performance across millions of households, the data is consistent: pet dander isn't a comfort problem — it's a filtration efficiency problem, and the moment you match the right MERV rating to the right filter depth for your system, families notice the improvement within days, not weeks."

— Filterbuy Team

Essential Resources

1. Filterbuy: Getting Rid of Pet Dander — Health and Wellness Guide

https://filterbuy.com/resources/health-and-wellness/getting-rid-of-pet-dander/

The filter handles what's airborne. This guide covers everything else — cleaning routines, ventilation habits, and whole-home strategies for households where pet dander is a daily management issue. The right starting point after you've sorted the filter.

2. Filterbuy: MERV 8 vs. MERV 11 — Complete Comparison Guide

https://filterbuy.com/resources/air-filter-basics/merv-8-vs-merv-11/

If you're weighing whether to stay at MERV 8 or upgrade, this comparison breaks down what each rating captures, how they differ on airflow resistance, and which makes sense by household type. Particle size data included. Useful before you order.

3. Filterbuy: Day and Night Air Filters — Full Size and MERV Range

https://filterbuy.com/brand/day-and-night-air-filters/

The full Filterbuy library of Day and Night replacement filters by size and MERV rating. If you run more than one cabinet or want to compare the 16x22x5 MERV 11 against the MERV 8 or MERV 13 option for the same housing, this is the right starting point.

4. Wikipedia: Air Filter — How Filtration Works

https://en.wikipedia.org/wiki/Air_filter

The technical reference on how mechanical air filters capture particles, how ASHRAE developed the MERV scale in 1987, and how filter types compare across residential applications. The background context behind the number on your filter.

Supporting Statistics

1. The 90% Problem — And What It Actually Means in a Pet Home

The EPA reports that Americans spend roughly 90% of their time indoors, where some pollutant concentrations run 2 to 5 times higher than outdoors. That statistic gets cited often. What doesn't get said alongside it is what it means in a home with animals.

We've worked with more than two million households. The ones that notice the biggest difference after upgrading their filter aren't the ones with the worst outdoor air. They're the ones who spend the most time inside with their pets — every evening, every weekend. When your filter isn't capturing the dander range, that 90% of indoor time is 90% of exposure time.

Source: U.S. EPA — Air Cleaners and Air Filters in the Home | epa.gov/indoor-air-quality-iaq/air-cleaners-and-air-filters-home

2. MERV 11 Performs Close to HEPA — Without the Airflow Penalty

The EPA states that filters rated MERV 7 through 13 are likely to be nearly as effective as true HEPA filters at controlling most airborne indoor particles. In over a decade of manufacturing, that finding holds in practice:

• HEPA is the right answer for medical-grade and industrial air handling

• For a residential 5-inch media cabinet, MERV 11 reaches the same particle range that matters for everyday allergen control

• The pressure drop stays within normal operating range for most Day and Night systems

• Your system doesn't work harder to deliver the filtration your household needs

Source: U.S. EPA — Guide to Air Cleaners in the Home | epa.gov/indoor-air-quality-iaq/guide-air-cleaners-home

3. The EPA's Own Guidance Points to MERV 11 for Most Day and Night Cabinets

The EPA recommends using the highest-rated filter your HVAC system fan and filter slot can handle. For Day and Night 5-inch media cabinets, that guidance lands on MERV 11 for most households. Here's why it works:

• A 5-inch filter at MERV 11 spreads airflow across more media surface area than a 1-inch filter at the same rating

• The pressure increase is smaller

• Particle capture stays the same

• After a decade of manufacturing across hundreds of system configurations, MERV 11 in a 5-inch format holds up longest — in performance, compatibility, and the air quality outcomes families report

Source: U.S. EPA — What Kind of Filter Should I Use in My Home HVAC System? | epa.gov/indoor-air-quality-iaq/what-kind-filter-should-i-use-my-home-hvac-system-help-protect-my-family

Final Thoughts and Opinion

We'll be direct: MERV 11 isn't the right answer for every home. It is the right answer for most homes with pets, and a decade of manufacturing and more than two million households backs that up.

MERV 8 was designed for general household use, not for the specific particle load that pets add to indoor air. It handles visible dust and larger debris well. What it misses is the microscopic dander range — and in a home with animals, that range is what matters most to the people inside it.

The 5-inch format adds something real to this equation. More media surface area means the filter holds more before it needs replacing, and at MERV 11 efficiency, it holds the right particles. The combination of depth and rating is what makes the 16x22x5 a complete answer for Day and Night CMF1620 cabinets, not just an incremental step from MERV 8.

Our recommendation: if you share your home with a pet, upgrading from MERV 8 to MERV 11 is the most direct filtration improvement available without replacing any equipment. The filter fits the same slot. It runs on the same change schedule. What changes is what it actually catches — and how the people in your home feel on the other side of that.

Next Steps

1. Confirm your filter size. Check the nominal size on your current filter frame — it should read 16x22x5. If the filter is gone, measure the slot (length x width x depth) and round each number up. A slot measuring 15.38" x 21.88" x 5.25" confirms the 16x22x5 nominal.

2. Confirm your Day and Night housing number. The cabinet label inside the filter door should show CMF1620. If you're replacing an OEM filter, the part numbers that match this size are FS1620, M0-1056, MU1620, 9183940, and MFAH-S.

3. Choose your pack size. A single filter gets you started. Two or more drops the per-filter price. Buying in multi-packs through Filterbuy.com consistently costs less than OEM single-filter pricing.

4. Set up Auto Delivery. Pick your interval — 60, 90, or 180 days — and save 5% on every order automatically. The filter shows up before you need it.

5. Install correctly the first time. Airflow arrow toward the system. The cabinet door closed tight. Power back on.

Frequently Asked Questions

What is the actual size of the 16x22x5 air filter?

15 3/8" x 21 7/8" x 5 1/4" — or 15.38" x 21.88" x 5.25". Filters run slightly smaller than the nominal label so they fit the slot without forcing. Order by the nominal size on your old filter frame, not the measured size.

Is MERV 11 safe for my Day and Night HVAC system?

Yes, for most systems using a 5-inch media cabinet. The 5-inch depth works in your favor here: more media surface area spreads airflow across a larger face, which keeps pressure drop lower than a 1-inch MERV 11 filter creates. If you're uncertain about your specific system, check the owner's manual or contact a local HVAC professional before upgrading.

How often should I change the 16x22x5 MERV 11 filter in a pet home?

Every 90 days is the baseline for most households. If you have multiple pets, high-shedding breeds, or a family member with allergies or asthma, check at 60 days and replace if the media looks dark or airflow from your vents has dropped. A visual inspection is more accurate than any fixed calendar schedule.

What HVAC systems use the 16x22x5 filter size?

The 16x22x5 fits Day and Night whole-house air cleaner cabinets with housing number CMF1620, and compatible 5-inch media configurations from Amana, Coleman, Goodman, York, BDP, Electro-Air, Five Seasons, Gibson, Maytag, Nordyne, and Payne. OEM part numbers for this size: FS1620, M0-1056, MU1620, 9183940, MFAH-S, and Totaline P102-1620.

What's the difference between MERV 11 and MERV 13 for a pet home?

MERV 11 handles pet dander, pollen, dust mites, and fine particulate matter effectively — which covers the filtration needs of most pet-owning households. MERV 13 adds meaningful efficiency against finer particles including some bacteria and virus carriers, and makes more sense for households with severe allergy sufferers or immunocompromised family members. Before moving to MERV 13, confirm that your Day and Night system's fan capacity can handle the added airflow resistance the denser media creates.

Does MERV 11 help with pet odors?

It helps with the source. MERV 11 captures the microscopic dander and organic particles that carry and concentrate pet odors, which reduces the airborne load over time. It won't eliminate odors on its own — for persistent smell issues, pair it with regular cleaning of soft surfaces, better ventilation, and an air purifier with an activated carbon layer if needed. The filter addresses what's airborne. The rest of the home environment determines what accumulates.

Can I use the Filterbuy 16x22x5 MERV 11 instead of the Day and Night OEM filter?

Yes. The Filterbuy MERV 11 16x22x5 is a direct aftermarket replacement for Day and Night OEM filters with part numbers FS1620, M0-1056, MU1620, 9183940, and MFAH-S. Same nominal size. Electrostatically charged synthetic media. 100% manufactured in the USA. Most customers who switch from OEM single filters to Filterbuy multi-packs do it for the pricing advantage, especially with Auto Delivery.

Why the MERV 11 16x22x5 Day and Night Air Filter Is the Smartest Defense for Allergy and Pet-Friendly Homes — Shop Yours

Your Day and Night system was built to last. Give it a filter that holds the same standard. The MERV 11 16x22x5 ships free from our U.S. facilities, arrives ready to install, and performs the same way on day one as it does on day eighty-nine — order a single filter to get started, or stock a multi-pack and save more on every filter.