Honeywell Home Air Filter High Efficiency CF100A1025/U, 20x25x4 - Merv 8
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- MERV 8 rating-up to 20x more efficient than typical 1" fiber glass filter.
- Easily fits Aprilaire/Space-Gard models 2200 & 2251.
- Captures high percentage of household airborne particles, including microscopic particles you can't see.
- Actual Dimensions: 19.94 x 24.87 x 4.38 in.
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.
| MERV RATING | MIN. PARTICLE SIZE | TYPICAL CONTROLLED CONTAMINANT | TYPICAL APPLICATIONS |
| 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 |
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Customer Reviews
5
Average score based on 41 reviews
- Reviewed: 05/02/2022 by RICHARD P
Merv 8 Filter Review
Terrific filter, highly recommended!!!
- Reviewed: 03/17/2022 by Linda S
Easy to use!
So much better than the old type we had to weave around a bracket.
- Reviewed: 10/04/2021 by Virginia P
A/C Filter
I have used these filters for many years in my air conditioner. They are a quality product living in Florida, they have to be good as they get used almost every day! A quality product and easy to order direct from Honeywell.
- Reviewed: 07/20/2021 by Kathleen F
Upgrade to the Best
Our HVAC technician recommended that we use Honeywell's four-inch high efficiency air filter, pointing out that the space in our system called for this deeper filter. Who knew? For years we were using the 1-inch. Delivery was very prompt, fit is perfect and we are breathing healthier!
- Reviewed: 07/09/2021 by Patti J
Honeywell Air Filter
I was very satisfied with ordering process and the Honeywell air filter. It was my first purchase and I will definitely order from them going forward.
- Reviewed: 06/04/2021 by Tyler C
Very happy with price and product!
- Reviewed: 05/07/2021 by CARMELO S
Title OK
Product delivered in a timely manner and product I ordered. Thank you for the quality service.
- Reviewed: 08/27/2020 by Rose Burckhardt
Fits Just Fine
Delivery was very fast and the filter fits just fine.
- Reviewed: 08/13/2020 by Itay Kama
very good
Love the bulk deal and very quick delivery