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Blue and white air filter with MERV 10 label on a white background

20x20x1 Air Filters

Actual: 19.5x19.5x.75 inches
Made in the USA • Ships within 48 hours • Free Shipping
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$0.00 1 filter • $0.00/ea
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Shop replacement air filters available in MERV 10, MERV 11, MERV 13, and Odor Block options. Designed for reliable performance and proper fit, these filters help capture dust, pollen, pet dander, and other airborne contaminants while supporting efficient HVAC operation.

Filters are stocked and shipped from our Clearwater, FL warehouse. Choose your preferred filtration level, order the quantity you need, and save more with volume pricing on larger orders.

When Should You Replace Your Air Filter?

Most homes replace pleated air filters every 1 to 3 months, but the right schedule depends on your home, air quality needs, pets, and how often your HVAC system runs.

IAQ

Allergies or Air Quality Concerns

Replace every 30 to 45 days

If dust, pollen, or indoor air quality is a concern, check your filter monthly and replace it more often to help keep air moving through clean filtration media.

PET

Pets in the Home

Replace every 2 months

Pet hair and dander can build up quickly. A 2 month replacement schedule is a good starting point for many homes with dogs or cats.

HOME

Standard Home Use

Replace every 2 to 3 months

For homes without pets or major air quality concerns, replacing your filter every 2 to 3 months is a practical starting point.

Quick tip: Check your filter monthly. If it looks dirty, clogged, or restricted, replace it sooner.

Filter Details

Product specifications and sizing information.

Nominal Size: 20x20x1

Actual Size: 19.5x19.5x.75 inches

Manufactured in the USA using high quality filtration media and durable beverage board frames.

Not sure if this is the right size? Browse our 1 inch air filters, 2 inch air filters, or 4 inch air filters to compare common residential filter sizes.

MERV Rating Guide

Learn what MERV ratings mean and choose the right level of filtration for your home.

In simple terms, the higher the MERV rating, the smaller the particles the filter can trap. Higher MERV filters can help improve indoor air quality by capturing more dust, allergens, and microscopic particles moving through your HVAC system.

Choosing the right MERV rating depends on your home, allergies, pets, air quality concerns, and HVAC system compatibility.

For a deeper breakdown, read our MERV rating guide to compare MERV, MPR, and APR air filter ratings.

MERV 10

Great for everyday residential filtration and standard home use.

  • Dust and lint
  • Pollen
  • Pet dander
  • Mold spores
  • General household debris

MERV 10 filters offer an excellent balance of airflow and filtration performance for most homes.

MERV 11

Enhanced filtration for homes with pets, allergies, or higher indoor air quality needs.

  • Dust and pollen
  • Pet dander
  • Mold spores
  • Fine household particles
  • Some smoke and smog particles

MERV 11 filters are a popular upgrade for homeowners looking for cleaner indoor air without significantly restricting airflow.

MERV 13

Advanced residential filtration for superior indoor air quality.

  • Fine dust particles
  • Smoke and smog
  • Bacteria carriers
  • Microscopic allergens
  • Some virus carrying particles

MERV 13 filters provide higher efficiency filtration performance for residential HVAC systems and are ideal for allergy sufferers, pet owners, and homes with higher air quality concerns.

Always verify your HVAC system can support higher efficiency filtration before upgrading to a MERV 13 filter.

What MERV Rating Is Best for Me?

A simple guide to choosing between MERV 10, MERV 11, and MERV 13.

The best MERV rating depends on your home, your HVAC system, and how much filtration you want.

Choose MERV 10 if you want a dependable everyday air filter for standard home use and general dust control.

Choose MERV 11 if you have pets, dust concerns, mild allergy concerns, or want a stronger everyday filter.

Choose MERV 13 if you want higher efficiency filtration for smaller particles, smoke, and improved indoor air quality, as long as your HVAC system can handle it.

If you are not sure where to start, MERV 10 and MERV 11 are great choices for many homes. MERV 13 is best for customers who want stronger filtration and have confirmed their system can support a higher efficiency filter.

You can also read our full air filter rating guide for a more detailed comparison.

How Often Should I Replace My Filter?

Replacement timing depends on your home, filter type, and system usage.

Most homeowners replace pleated air filters every 1 to 3 months, but the right schedule depends on your home and how often your HVAC system runs.

You may need to replace your filter more often if you have pets, allergies, heavy dust, recent construction, or your air conditioner runs frequently during warmer months.

Check your filter monthly. If it looks dirty, clogged, or restricted, it is time to replace it.

Need a different thickness? Browse our 1 inch air filters, 2 inch air filters, or 4 inch air filters to find the right replacement for your system.

Shipping & Delivery

Information about fulfillment and shipping.

Orders ship from our Clearwater, Florida warehouse.

Most orders ship within 1 business day.

Free shipping is included on all filter orders.

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Which MERV Rating Is Right For You?

Helps capture
MERV 10 air filter MERV 10
MERV 11 air filter MERV 11 Most Popular
MERV 13 air filter MERV 13
Dust, Lint & Debris ✓ ✓ ✓
Pollen & Mold Spores ✓ ✓ ✓
Pet Dander ✓ ✓ ✓
Smoke Particles × ✓ ✓
Bacteria Carriers × × ✓
Virus Carriers × × ✓

MERV 10

Good for everyday homes focused on dust, pollen, and airflow.

MERV 11 Most Popular

The best balance of filtration and airflow for most households.

MERV 13

Maximum residential filtration for allergies, smoke, and indoor air quality.

Find Your Filter Size

Customers praised these air filters for excellent value and simplicity. Reviews highlight "great filters at a great price" with straightforward installation. The product delivers effective air filtration performance while remaining budget-friendly and easy to use.

Some of the reviews shown are from related products the merchant grouped with this one.
A
Anonymous (United States)
Great filters at a great price

Great filters at a great price. Super simple.

D
DEAN V. (Italy)
A/C Filters

Outstanding customer service! Filters were delivered as requested. Thank You! Will order again when needed.

C
Cecelia L. (United States)
Filters

Great filter and will buy from again.

A
Angela R.
Such a great resource for air filters!

You guys are my go to for air filters. Thank you for being there for me!

A
Anonymous

Good price when you buy at least 4. I'm not sure the carbon lasts 3 months in my household. I'm sure cigarettes and stinky cats are the reason.

R
Randall (United States)

Good price when you buy at least 4. I'm not sure the carbon lasts 3 months in my household. I'm sure cigarettes and stinky cats are the reason.

D
D.F.

Love this product and your customer service !

D
DANIEL (United States)

Love this product and your customer service !

M
Michael T. (United States)
Excellent service

Was quite pleased with the filters I purchased. Got a great price and they were shipped promptly. Thank you.

D
Dennis

Fast getting filter order filled and shipped. The filters arrived within a week, and in excellent condition! Thanks Filters Shipped!

S
Steve D. (United States)
Best Price Around and Quick Shipping

Although I have not yet used them, they are a brand that I previously purchased from another vendor and they work great. I was surprised that shipping was that fast!

D
Dennis E. (United States)
Basement musty smell gone

Basement musty smell vanished after putting in your carbon filter into the furnace! Thank You. I will be back for more!

D
Debbie D. (United States)
Diamond filters

I have used these for years and they catch alot of dirt and stuff.

D
Douglas P. (United States)
Great Service

FedEx did a little dance on my filter order, but Chad took care of it with no work from me. That kind of service is always appreciated.

R
Richard M. (United States)
10" x 10" Filters Work Great

10" x 10" filters are not available locally. I have been buying them from Filters Shipped for the past few years. They work great.

R
Rachel M. (United States)
My filters

Filters are exactly what I ordered. Work great. Thanks again and I will be reordering.

J
Joseph G. (United States)
Excellent Service

Although my order was initially delayed, as soon as I inquired about my order, I received excellent, personalized service and received my order within 2 days. They actually care about individual orders. What a concept! I will shop here again.

J
Jim B. (United States)
Filters

They are working well Thank you

S
Sylvia B. (United States)
Top of the line, service and products!

If you're looking for a company that provides not only a fair price for a quality product, as well as excellent customer service, you'll find it here with Filters Shipped! There was a bit of a mix up with an order I recently place and when I contacted customer service, it was immediately taken care of and I was made to feel my needs and feelings mattered. Thanks, Chad!

R
Rana M. (United States)
Great filter

Purchased this filter to help with musty smell in basement. Worked great! It was packaged very safely.

G
George F. (United States)
Air filters

Excellent.
Arrived quickly and undamaged.

A
Anita R. (United States)
Filters

Ordering was easy shipment was fast I will definitely order again

P
Patti Z. (United States)
Accumulair carbon filter

I received the filter quickly and it arrived in perfect condition. It also fits the furnace perfectly. Will order again!

R
Russell O. (United States)
Thinner material than before

While the size of each of the filters fits the openings, the cardboard seems to much less substantial than before. Not too thrilled by that.

J
Jeffery O. (United States)
Great filters, great service

These filters work great. Really appreciate not having to think about replacing them on time- you take care of the timing for me!

t
tsSLAueP
Mr.

20

t
tsSLAueP
Mr.

20

t
tsSLAueP
Mr.

20

D
Daniel F. (United States)
Great Service

I was very pleased with the product and your customer service!

H
Helena B. (United States)
Breathing East

I have used this produce for at least 20 years and literally could not breathe without carbon air filters, and I've found Accumulair to be the best.

L
Lorrie D. (United States)

I had previously purchased filters from another vendor. I found your filters, despite being of identical size to the ones I purchased in the past from the other vendor, to be just a tad too large for the filter space. In order to fit properly, I had to scrunch them a bit.

S
Sandra K. (United States)
Convenient

Off my mind service
Great way to remind myself to change the filter without having to remember to buy it

M
Michelle T. (United States)
Great prices!

Good overall first-time customer experience!

L
Lisa H. (United States)
A company to be trusted

Great! Will continue buying from this company.

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