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 5-12 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||Hospital & general surgery|
|17 - 20||< 0.3 Micrometers||Virus, carbon dust, sea salt, smoke||Electronics & pharmaceutical manufacturing cleanroom|
Average Customer Rating Based on 69 reviews:
fat filter - 03/02/2017
Reviewer: Kent Christensen
Hard to find size. Honeywell came thru. Fast and easy to order. Quick ship
Honeywell Air Filter Ultra Efficiency CF200A1024/U, 20x20x4.5 - Merv 12 - 02/21/2017
Reviewer: Ann Attal
Easy to buy, shipped quickly, even though it was delayed they kept tracking updated
Reviewer: Brett Halbrook
all filters arrived in great condition
Reviewer: John Minor
Received 3 whole house air filters very quickly, priced significantly lower than competition. Ordering very simple
Reviewer: Olga Tucker
Would definitely recommend buying filters from here.
Air Filter Review - 01/26/2017
Reviewer: Karen Weber
I got exactly the kind of Honeywell Air Filters that I ordered. They are very efficient and the price is better than I can get from my HVAC company so I am happy.
Finally Found My Filter - 12/29/2016
Reviewer: Nancy Cutts
I have purchased filters locally and spent nearly double the price offered by your store. Thank you for offering a top quality product for such a great deal.
Reviewer: Glen Ward
Easy ordering, fast delivery. Order was packed properly and received in good condition. Best no hassle buying around
Great service, great price - 12/09/2016
Reviewer: Thomas Sawyer
Received filters very soon after ordering. Price was better than big-box stores, or online stores. Will definitely order again.
Reviewer: Mark Hanlin
Always a perfect fit. Others say they are an exact Honeywell replacement filter, but they are not. Received my order in 2 days!