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  • High efficiency 1 inch air cleaning filter with a MERV 11 rating.
  • Captures high percentage of airborne particles and allergens.
  • Electrostatically charged to effectively catch and trap dust particles.
  • Each filter lasts up to 3 months - 4 pack provides 1 year worth of air filtration.
  • Easy flow energy efficiency with a heavy duty frame.
  • Actual Dimensions (inches): 19.75 x 19.75 x 0.75
  • This air filter is effective against the following contaminants:
    • Dust/Lint
    • Airborne Dust Mite Debris
    • Pollen
    • Pet Dander
    • Mold Spores
    • Bacteria
    • Microscopic Allergens
    • Virus Carriers
    • Most Smoke

Honeywell High Efficiency Allergen MERV 11 Air Filters (4 Pack)

Capturing a high percentage of airborne particles and allergens, this selection of Honeywell High Efficiency Allergen Air Filters features a MERV 11 Rating. High efficiency 1 in. air cleaning filters are electrostatically charged to capture and trap dust particles while remaining effective against a series of other contaminants. Showcasing durability and overall effectiveness, these air filters offer easy flow energy efficiency and a heavy duty frame. Honeywell High Efficiency Allergen Air Filters each last up to 3 months. This pack of 4 air filters provides one year worth of air filtration. Please be certain to measure the filters you are replacing or your filter boot to make sure it's an exact match.

MERV = 'Minimum Efficiency Reporting Value' this is used to rate the overall effectiveness of an Air Filter. Below you will find a table that measures the MERV strength and tells you the Application of each unit's effectiveness. In general an Air Filter with a higher MERV Rating is more effective and has a broader application, but most residential homes will find the best use from an air filter between the 5-13 MERV rating.


1 - 4 > 10.0 Micrometers Pollen, dust mites, cockroach debris, sanding dust, spray paint dust, textile fibers, carpet fibers Residential window AC units
5 - 8 10.0 - 3.0 Micrometers Mold, spores, dust mite debris, cat and dog dander, hair spray, fabric protector, dusting aids, pudding mix Better residential, general commercial, industrial workspaces
9 - 12 3.0 - 1.0 Micrometers Legionella, Humidifier dust, Lead dust, Milled flour, Auto emission particulates, Nebulizer droplets Superior residential, better commercial, hospital laboratories
13 - 16 1.0 - 0.3 Micrometers Bacteria, droplet nuclei (sneeze), cooking oil, most smoke and insecticide dust, most face powder, most paint pigments

Ultra residential, best commercial, hospital & general surgery

Product Details
Product Specs
Furnace Filters for HVAC Systems
Honeywell 20x20x1 High Efficiency Allergen MERV 11 Air Filter, 4 Pack Video

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HW20x20X1M11_4 customer reviews

Overall Rating

15 Reviews
15 customers recommend this product
Honeywell 20x20x1 High Efficiency Allergen MERV 11 Air Filter, 4 Pack Reviews
Dennis M
February 7, 2024
Verified Purchase
clean house

does the job catching all particals in the air. Ease to order online and shipping is free

Richard N
September 25, 2023
Verified Purchase
Protect your lungs while not killing your Furnace

Seriously, these filters were tested in-depth on a YouTube channel called Project Farm. They were the best balance of protection from dirt, dust and contaminants, and also allowing air to flow so that your air conditioner and furnace doesn't struggle to an early death. I won't buy anything else.

May 30, 2023
Verified Purchase
Great Value

These are great filters at a very good price. We have 3 filters that need changed every three months. That adds up in a hurry, so being able to get Honeywell filters at a lower price than at the local home improvement center is fantastic.

Christopher C
May 17, 2023
Verified Purchase

This was my first purchase from honeywellstore.com and I was pleased to find the size and MERV rating I need. I received my shipment in about a week and I am glad to have quality filters from a quality company. Thanks

Andrew R
March 23, 2023
Verified Purchase

Always good

Diane D
March 16, 2023
Verified Purchase
Right Fit

So easy to order Reasonably and compatibly priced solidly maid quick delivery will purchase again

Robert B
January 31, 2023
Verified Purchase
Appreciation #2

I am 72 and I have a bad habit of putting things off just ask my wife,but again with your timely reminders I ordered these so I am prepared for the coming months.

Lois E
January 27, 2023
Verified Purchase

So far so good

Howard L
October 31, 2022
Verified Purchase

I'm not sure just started using it today 20/31/22

Boaz N
October 20, 2022
Verified Purchase
Air filter

Great product

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