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  • Premium 1 inch air cleaning filter with a MERV 13 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
    • Odor
    • Smog Particles

Honeywell Ultra Efficiency Allergen MERV 13 Air Filters (4 Pack)

Capturing a high percentage of airborne particles and allergens, this selection of Honeywell Ultra Efficiency Allergen Air Filters features a MERV 13 Rating. Premium 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 Ultra 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 Ultra Efficiency Allergen MERV 13 Air Filter, 4 Pack Video

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HW20X20X1M13_4 customer reviews

Overall Rating

10 Reviews
10 customers recommend this product
Honeywell 20x20x1 Ultra Efficiency Allergen MERV 13 Air Filter, 4 Pack Reviews
June 4, 2024
Verified Purchase
good product; good order turnaround

I think these filters are best, and it's easiest to order them directly from Honeywell.

Rosemary D
November 24, 2023
Verified Purchase
Good Product

Effectively meet my filter needs

August 29, 2023
good product

I have been using this filter for years. When I change the filter, it is clear it's filtering dust and doing the job well. I will continue to use it.

colette i
May 11, 2023
Verified Purchase
Honeywell filters

My second time ordering these filters and I'm very pleased.

Steve B
February 14, 2022
Verified Purchase
Air Filter

excellent product.

Steve B
February 10, 2022
Verified Purchase
Great product

Great product. Best filter I've ever used. It's amazing how much dirty air in our home and this filter does its job. We change every 4 months.

Dean H
August 19, 2021
Verified Purchase
Great filter at a great price

Ordered directly from Honeywell, since this product was not available in the big box stores...for either the filter rating nor size needed.

Jerry S
August 5, 2021

Came exactly as described. Thank you

Steve B
August 4, 2021
Verified Purchase
Air Filter

4 years using product. Change every 6 months. Fall/Spring Work great.

John L
June 22, 2021
Verified Purchase
Allergen Air Filters

Very good filters work great these can not be found in regular store .Good price for a great filter Thank you Honeywell.

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