Captures high percentage of house hold airborne particles, including microscopic particles you can't see.
Actual Dimensions: 19.94 x 24.87 x 4.38 in.
You can improve the air quality in your home substantially with Honeywell Whole-House Air Cleaner Filters. It's no secret that today's tightly-built homes trap dust, allergens and many more potentially hazardous contaminates. It's also none too surprising that poor indoor air quality ranks among the top five environmental risks to public health. Honeywell Air Filters (MERV 8 Rating) are 20x more efficient than a typical 1" fiber glass filter, plus they have the added ability of lasting up to one year. Air filters are also easy to install and come in accommodating sizes that fit all Honeywell and many Aprilaire, Space-Gard and Trion Air Bear models. 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.
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
Honeywell CF100A1025 4-Inch High Efficiency Air Cleaning Filter 20x25x4 Videos
If you are interested in ordering a large quantity of items you may qualify for volume pricing discounts. Volume Discount Pricing is a great way for customers to save big on large, bulk orders of most items available in our store. Please send a bulk order request to our friendly sales staff so they may create a quote and provide personal service for your order! You will receive a response within 1-2 business days and our office hours are Monday through Friday, 8am-5pm CST.
We make it as easy as possible to ensure you get the lowest prices available:
Let us know what products & the quantities you are interested in.
Get a detailed quote from a dedicated sales rep.
Our warehouse ships directly to you.
You enjoy the savings & are now a preferred customer.
Honeywell CF100A1025 4-Inch High Efficiency Air Cleaning Filter 20x25x4 Reviews
Reviewed: 05/07/2021 by CARMELO S
Product delivered in a timely manner and product I ordered. Thank you for the quality service.
Fits Just Fine
Reviewed: 08/27/2020 by Rose Burckhardt
Delivery was very fast and the filter fits just fine.
Reviewed: 08/13/2020 by Itay Kama
Reviewed: 08/12/2020 by Howard Nearman
Arrived as ordered
Performs as claimed
A/C Filter Review
Reviewed: 07/24/2020 by Curtis Szymczyk
Fit and work well
Reviewed: 07/16/2020 by RICHARD PETRUZZO
Terrific product, fast delivery. Very pleased!
Reviewed: 03/31/2020 by Raul Lopez
Love these filters and they came quick!
Reviewed: 12/11/2019 by Charles Pleier
So I find out my HVAC system needs a Merv rating no higher than 8, or it is too obstructive for the blower. So here I am with my well-priced air filters.
Reviewed: 10/28/2019 by Mark Businski
Great and reliable service with prompt delivery.
Reviewed: 10/14/2019 by Richard Petruzzo
Excellent product, quick delivery. Very pleased!
Reviewed: 08/07/2019 by Timothy Heisler
Our home smells better and the air flow is wonderful. These filters are great.
Reviewed: 04/24/2019 by Richard Petruzzo
Terrific product, super fast shipment
Reviewed: 04/15/2019 by Alan Vicari
Exact size and MERV required. Delivery timely as anticipated.
Reviewed: 09/26/2018 by Marvelle Ditto
The filters arrived quickly and in good condition. Easy to install. Thank you!
Reviewed: 09/04/2018 by tommy smith
Honeywell fit a lot better than the off brand we used before.
Reviewed: 07/11/2017 by Sandy Drake
Item was just what I ordered
The best filter you can buy.
Reviewed: 05/01/2017 by Shawn Ivy
Honeywell makes the best filters, they trap virtually all dust, and pollen particles.
Reviewed: 04/26/2017 by Protection 1 Protection 1
Excellent service and product
Reviewed: 02/06/2017 by Dora Koepke
Reviewed: 01/27/2017 by Shawn Ivy
Great filter, I would highly recommend this product.
Reviewed: 01/04/2017 by Sharon petrowski
With the help of customer service I was was able to replace my old furnace filter which had fork like plastic things to hold the filter in place with one unit that fits perfectly. It should last a year! Couldn't be happier that it fit
Easy to install
Reviewed: 10/26/2016 by CAROL KELLEY
They processed my order quickly and they were easy to install.
Reviewed: 08/08/2016 by Marjorie Egarian
Happy with the product and customer service.
Like the Merv 8 Filter
Reviewed: 07/22/2016 by Edward Leonard
These filters are great. Dust way down in the house. Merv 8 is a nice balance of good air flow and maximum filter efficiency.
Reviewed: 04/15/2016 by Mary Beth Tara
Great product at a great price, and the order is always processed quickly and arrives on time.
Reviewed: 04/12/2016 by Dr. James Palmisano
product arrived in good order and on time.
Reviewed: 03/22/2016 by Emile Goolsby
Excellent service and product.
Reviewed: 10/04/2015 by joel polin
An excellent product.It more than fulfilled my expectations.
4 HAVC Filters
Reviewed: 03/17/2014 by Leslie White
Exactly as expected shipped very promptly despite weather problems. Price per filter was better than any local price.
Reviewed: 01/07/2014 by mark saigh
excellent product & very simple to install
Reviewed: 01/02/2014 by Kathryn C Lenox
very good service
Reviewed: 10/19/2012 by Vincent Gadrix
Excellent service at a lower cost than local dealer
Reviewed: 05/30/2012 by Loyde Foster
Super fresh air lasting one year or more.
Reviewed: 10/18/2011 by Linda Fosters
Very happy with filter, air is cleaner and house smells much fresher.