Air Filters Merv
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 2 SKUTTLE AIR FILTERS 20X25X5 DB 25 20 448 2 MERV 13 $51.98 Time Remaining: 24d 8h 40m Buy It Now for only: $51.98 |
 Filtrete Micro Allergen Reduction Filters 1000 MERV 12 x 20 x 1 6 Pack $19.99 Time Remaining: 1d 18h 40m |
 Merv 6 12 pk Perfect Pleat PG pleated filters 12x24x1 NEW $15.00 (1 Bid) Time Remaining: 4d 1h 47m |
 2 HONEYWELL AIR FILTERS ALL SIZES AND MERV RATINGS HERE $47.95 Time Remaining: 14d 29m Buy It Now for only: $47.95 |
 16x25 MERV15 Carrier Bryant Infinity Replacement Filter $65.00 Time Remaining: 7h 21m |
 12 GF HIGH QUALITY AIR FILTERS MERV 11 MANY SIZES HERE $78.23 Time Remaining: 27d 20h 5m Buy It Now for only: $78.23 |
 MERV 6 Air filter media 1 36x50 heater AC Furnace window unit Allergy Dust $12.00 Time Remaining: 12h 51m Buy It Now for only: $14.00 |
 MERV 9 Poly Air Filter Media ONE Roll Allergy 25X15 $22.49 Time Remaining: 1d 5h 21m Buy It Now for only: $24.99 |
 2 SKUTTLE AIR FILTERS 16X25X5 DB 25 16 448 1 MERV 11 $41.98 Time Remaining: 6d 15h 55m Buy It Now for only: $41.98 |
 Filtrete Ultra Allergen Reduction Filters 1500 MERV 12 x 12 x 1 6 Pack $0.99 (1 Bid) Time Remaining: 16h 35m |
 2 SKUTTLE AIR FILTERS 16X25X5 DB 25 16 448 1 MERV 13 $47.98 Time Remaining: 24d 8h 39m Buy It Now for only: $47.98 |
 MERV 9 Polyester Air Filter Pads Allergy AC 3 20x25 $13.99 Time Remaining: 2d 12h 36m |
 Genuine Honeywell FC100A1037 Air Filters 20X25 MERV 10 Brand New 2 Pack $40.00 Time Remaining: 1d 2h 41m Buy It Now for only: $60.00 |
 2 APRILAIRE SPACEGARD AIR FILTERS 2200 201 2400 401 $54.95 Time Remaining: 25d 12m Buy It Now for only: $54.95 |
 FGI Aerostar 14x20x1 Merv 12 Furnace Filters Qty4 $19.95 (1 Bid) Time Remaining: 13h 21m |
 2 MERV 11 20x25x5 Carrier Furnace Air Filters $51.98 Time Remaining: 3d 2h 15m Buy It Now for only: $51.98 |
 6 Airflow Furnace Filters 16x20x1 Pleated MERV 8 $48.00 Time Remaining: 2d 2h 22m |
 NORDIC PURE 20X25X5L1M12 2 LENNOX X6673 MERV 12 PLEATED FURNACE FILTER $2.99 Time Remaining: 1d 12h 7m |
 2 MERV 8 16x25x5 Carrier Furnace Air Filters $47.98 Time Remaining: 28d 15h 51m Buy It Now for only: $47.98 |
 2 Honeywell Micro DEFENSE Air Cleaner Filter FPR10 Merv 12 CF200A1016 20x 25 $39.99 Time Remaining: 3d 15h 34m |
 QUALITY MERV 11 HOME AIR FILTERS BEST AVAL LONGEST LIFE $59.88 Time Remaining: 7d 5h 29m Buy It Now for only: $59.88 |
 Lot of 9 Platinum Accumulair Air Filters MERV 11Size is 13 x 21 x 1 $84.99 Time Remaining: 2d 8h 10m Buy It Now for only: $129.99 |
 Nordic Pure 20x25x4 AC Furnace Air Filters MERV 12 Box of 2 $0.99 (1 Bid) Time Remaining: 1d 16h 35m |
 12 PACK QUALITY MERV 13 FURNACE AC PLEATED AIR FILTERS $85.94 Time Remaining: 10d 6h 15m Buy It Now for only: $85.94 |
 Honeywell FC200E1029 Replacement Media MERV 13 2 PACK $72.04 Time Remaining: 3d 13h Buy It Now for only: $79.94 |
 Trion Air Bear 259112 102 MERV 11 Repl Filter 20x25x5 $67.88 Time Remaining: 18d 17h 30m Buy It Now for only: $67.88 |
 Honeywell PopUP1625 Self Assembling Filter MERV11 $22.55 Time Remaining: 3d 13h Buy It Now for only: $25.05 |
 Honeywell PopUP1625 Self Assembling Filter MERV11 $22.55 Time Remaining: 3d 13h 2m Buy It Now for only: $25.05 |
 MERV11 Expanded Filter Aprilaire Spacegard 2200 2250 $48.88 Time Remaining: 24d 17h 30m Buy It Now for only: $48.88 |
 Honeywell FC200E1003 Replacement Media MERV 13 2 PACK $0.99 Time Remaining: 3d 13h 2m Buy It Now for only: $79.94 |
 Nordic Pure 20 X 25 X 4 Honeywell Replacement AC Furnace Air Filters MERV 13 $39.95 Time Remaining: 25d 2h 58m Buy It Now for only: $39.95 |
 Honeywell FC200E1029 Replacement Media MERV 13 2 PACK $0.99 Time Remaining: 3d 13h 2m Buy It Now for only: $79.94 |
 Honeywell FC200E1011 Replacement Media MERV 13 2 PACK $0.99 Time Remaining: 3d 13h 2m Buy It Now for only: $79.94 |
 5 pack GF MERV 13 HONEYWELL AIR FILTERS 20X25X5 20x25x4 $124.49 Time Remaining: 10d 10h 17m Buy It Now for only: $124.49 |
 Honeywell FC200E1029 Replacement Media MERV 13 2 PACK $72.04 Time Remaining: 3d 13h 5m Buy It Now for only: $79.94 |
 16 X 25 X 1 MERV 11 Pleated Filter $26.88 Time Remaining: 8d 16h 30m Buy It Now for only: $26.88 |
 Honeywell PopUP1625 Self Assembling Filter MERV11 $0.99 Time Remaining: 3d 13h 5m Buy It Now for only: $25.05 |
 Honeywell FC200E1011 Replacement Media MERV 13 2 PACK $0.99 Time Remaining: 3d 13h 5m Buy It Now for only: $79.94 |
 20 X 25 X 2 MERV 8 Pleated Filter $35.88 Time Remaining: 24d 20h 30m Buy It Now for only: $35.88 |
 MERV 9 Poly Air Filter Media ONE Roll Allergy 16X22 $22.49 Time Remaining: 4d 5h 21m Buy It Now for only: $24.99 |
 2 PACK TRANE AMERICAN STANDARD AIR FILTER FITS PERFECT $61.87 Time Remaining: 27d 7h 29m Buy It Now for only: $61.87 |
 Honeywell FC200E1011 Replacement Media MERV 13 2 PACK $72.05 Time Remaining: 3d 13h Buy It Now for only: $79.94 |
 Honeywell FC200E1003 Replacement Media MERV 13 2 PACK $72.04 Time Remaining: 3d 13h Buy It Now for only: $79.94 |
 24x24x1 MERV 8 Air Conditioner Furnace Filters Qty 6 $37.92 Time Remaining: 18d 7h 57m Buy It Now for only: $37.92 |
 Honeywell FC200E1011 Replacement Media MERV 13 5 PACK $168.50 Time Remaining: 3d 13h Buy It Now for only: $187.20 |
 2 MERV 8 Honeywell FC100A1029 Filters Exact Duplicate At A Value Price $39.98 Time Remaining: 29d 14h 42m Buy It Now for only: $39.98 |
 Honeywell FC200E1011 Replacement Media MERV 13 5 PACK $168.50 Time Remaining: 3d 13h 2m Buy It Now for only: $187.20 |
 Honeywell FC200E1003 Replacement Media MERV 13 2 PACK $72.04 Time Remaining: 3d 13h 5m Buy It Now for only: $79.94 |
 6 PK 20X25X4 16X25X4 20X20X4 MERV 11 HOME FURNACE PLEATED AIR FILTERS GLASFLOSS $74.99 Time Remaining: 10d 6h 59m Buy It Now for only: $74.99 |
 Honeywell FC200E1011 Replacement Media MERV 13 5 PACK $168.50 Time Remaining: 3d 13h 5m Buy It Now for only: $187.20 |
 2 SKUTTLE AIR FILTERS 20X25X5 DB 25 20 448 2 MERV 8 $43.98 Time Remaining: 18d 10h 1m Buy It Now for only: $43.98 |
 Honeywell FC200E1003 Replacement Media MERV 13 5 PACK $170.30 Time Remaining: 3d 13h 5m Buy It Now for only: $189.20 |
 Honeywell FC200E1037 Replacement Media MERV 13 2 PACK $72.04 Time Remaining: 3d 13h Buy It Now for only: $79.94 |
 12 HIGH QUALITY HOME AIR FILTERS MERV 8 MANY SIZES HERE $49.00 Time Remaining: 22d 8h 53m Buy It Now for only: $49.00 |
 Honeywell FC200E1037 Replacement Media MERV 13 5 PACK $0.99 Time Remaining: 3d 13h Buy It Now for only: $189.84 |
 20 X 20 X 1 MERV 8 Pleated Filter $24.88 Time Remaining: 24d 19h 9m Buy It Now for only: $24.88 |
 Honeywell FC200E1003 Replacement Media MERV 13 5 PACK $0.99 Time Remaining: 3d 13h Buy It Now for only: $189.20 |
 Honeywell FC200E1003 Replacement Media MERV 13 5 PACK $0.99 Time Remaining: 3d 13h 2m Buy It Now for only: $189.20 |
 20 X 25 X 1 MERV 11 Pleated Filter $28.88 Time Remaining: 18d 18h 50m Buy It Now for only: $28.88 |
 Honeywell FC200E1037 Replacement Media MERV 13 5 PACK $0.99 Time Remaining: 3d 13h 2m Buy It Now for only: $189.84 |
 2 TRION AIR BEAR FILTERS ALL SIZES MERV RATINGS HERE $42.99 Time Remaining: 27d 16h 19m Buy It Now for only: $42.99 |
 Honeywell FC200E1037 Replacement Media MERV 13 2 PACK $0.99 Time Remaining: 3d 13h 2m Buy It Now for only: $79.94 |
 Honeywell FC200E1037 Replacement Media MERV 13 2 PACK $0.99 Time Remaining: 3d 13h 5m Buy It Now for only: $79.94 |
 2 SKUTTLE AIR FILTERS 20X25X5 DB 25 20 448 2 MERV 11 $47.98 Time Remaining: 6d 15h 55m Buy It Now for only: $47.98 |
 Honeywell FC200E1037 Replacement Media MERV 13 5 PACK $0.99 Time Remaining: 3d 13h 5m Buy It Now for only: $189.84 |
 20 X 25 X 1 MERV 8 Pleated Filter $25.88 Time Remaining: 24d 19h 9m Buy It Now for only: $25.88 |
 Nordic Pure 16x25x4 AC Furnace Air Filters MERV 12 Box of 2 $13.44 Time Remaining: 5d 13h 36m |
 2 Accumulair MERV 11 Air Filters 295x32x2 NR 4 available $69.99 Time Remaining: 4d 59m |
 TRION AIR BEAR SUPREME SKUTTLE HOME FILTERS ALL SIZES $59.99 Time Remaining: 4d 21h 36m Buy It Now for only: $59.99 |
 Accumulair MERV 11 Air Filter 295x32x2 NR 4 available $34.99 Time Remaining: 4d 58m |
 2 MERV 13 16 x 25 x 5 Honeywell Furnace Air Filters $51.98 Time Remaining: 10d 17h 44m Buy It Now for only: $51.98 |
 Nordic Pure 16x25x5 Honeywell Replacement AC Furnace Air Filters MERV 12 2 Pck $19.45 Time Remaining: 3d 15h 6m |
 Nordic Pure 16x25x4 AC Furnace Air Filter MERV 12 16x25x4M12 reduce pollen $9.99 Time Remaining: 3d 13h 32m |
 2 MERV 13 20 x 25 x 5 Air Bear Furnace Air Filters $59.98 Time Remaining: 22d 15h 18m Buy It Now for only: $59.98 |
 12 15x25x1 Furnace Air Filter Merv 7 $25.00 Time Remaining: 4d 16h 56m Buy It Now for only: $50.00 |
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Healthy Climate MERV 16 Filter Media for Aprilaire Space-Gard 2200, 2250 & Lennox PMAC-20C
Sale Price: $100.00  |
DescriptionDesigned to work with your heating and cooling systems, it install easily into the ductwork and enhances the air throughout the home, capturing up to 95% of fine particles-allergy-aggravating irritants that are easily inhaled deep into the lungs... |
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Lennox X8308 - MERV 16 Expandable Filter Kit 20" x 20" x 5" - Genuine Lennox Product
List Price: |
DescriptionLennox X8308 - Healthy Climate HCXF14-16 MERV 16 Expandable Filter Kit 20" x 20" x 5" - Includes Filter AND Frame |
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Pentek FloPlus-20BB Filter - 20 Big Blue Carbon
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DescriptionThe Pentek FloPlus-20BB 20 filter can be used in many filtration systems. This cartridge is made for high flow applications and features .5 micron rating and 5 gallon per minute flow rate. |
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Nordic Pure 20x25x5 Honeywell Replacement AC Furnace Air Filters, MERV 12, Box of 2
List Price: |
DescriptionNordic Pure air filters have an actual size that is a fraction of an inch smaller than the standard size (also known as "nominal size"). The size printed on your air filter may NOT be the Actual Size... |
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201 Media for Aprilaire 2200 Air Cleaner
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DescriptionThe 201 fits Models 2200 and 2250. This is the high efficiency filtering media, which is the heart of your air cleaner. All so works for Space-gard 2200/2250 & Lennox PMAC-20C & 2200 |
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Filtrete 9831DC-6 Dust and Pollen Filters, 600 MPR, 16 x 25 x 1, 6-Pack
List Price: |
DescriptionThe Filtrete 600 MPR dust and pollen reduction filter not only vastly improves the air quality in your home, it also keeps your air conditioning and heating systems running efficiently, saving on utilities and maintenance costs... |
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Accumulair Gold Filter (MERV 
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DescriptionUp to 30-times more efficient at capturing allergens than ordinary fiberglass filters. Uniform pleat shape enhances dust holding capacity and maximizes air flow. Heavy duty construction frame prevents airflow bypass... |
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Aprilaire / Space-Gard replacement 201 media for model 2200 and 2250 air cleaners
Sale Price: $33.56 |
DescriptionThis is Genuine Aprilaire / Space-Gard replacement filter media for their Model 2200 and 2250 media air cleaners. The Aprilaire brand of replacement media is the best to use for both Aprilaire and Space-Gard Media Air Cleaners... |
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Accumulair Emerald Filter (MERV 6)
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DescriptionUp to 30-times more efficient at capturing allergens than ordinary fiberglass filters. Uniform pleat shape enhances dust holding capacity and maximizes air flow. Heavy duty construction frame prevents airflow bypass... |
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Filtrete 9803DC-6 Micro Allergen Reduction Filters, 1000 MPR, 20 x 25 x 1, 6-Pack
List Price: |
DescriptionThe Filtrete 1000 MPR Micro allergen reduction filter not only vastly improves the air quality in your home, it also keeps your air conditioning and heating systems running efficiently, saving on utilities and maintenance costs... |
What the Air Purifier Makers Do not Want You to Know
You don’t get very far down the air purifier aisle before your head starts swimming with questions about how all of these units compare with each other. So far, various organizations have come up with new ratings to try to make it easier to compare one to the other. Each of the ratings seems to fall short in determining the actual air cleaning ability of the unit.
MERV (Minimum Efficiency Reporting Value) ratings apply to the efficiency of an air filter, while the CADR (Clean Air Delivery Rate) rating applies to a self-contained air purifier. The real information you should be concerned with is how much air is this machine capable of cleaning and how clean is it going to be when the machine or filter has done its job.
It’s not the ratings that are lacking; it’s the fact that there is no frame of reference. If a filter is MERV 10, is that better or worse than a MERV 9. Also, if it is better, it is difficult to tell how much better. You have the same situation with the CADR rating. Is the 4 rating better than the 5, and then, how much better?
What it all comes down to is; how much air is resulting and how clean is the air? In order to understand how clean the air is you have to know the particles you are trying to remove. For instance, pollen, dust and animal dander can be controlled with a system that is effective down to 1 micron (one micron is one millionth of a meter). If you want to clean the air from second hand smoke and bacteria, you have to find a system that is effective down to 0.3 microns. One fact that is not always reported is that the most harmful particles are those smaller than 1 micron.
In order to determine how much clean air is being delivered (this is what the CADR rating is attempting to accomplish), you must do a little math. The simple formula is:
CFM (cubic feet of air moved per minute) x 60 (minutes per hour), then divide by 6 (for number of air changes per hour), then divide by the height of the room (ex. 8ft), then calculate the square root. This will give you the size of room that the unit is capable of cleaning.
The formula looks complicated, but if you walk through it once or twice, it will start to make sense. Lets say you are looking at a unit that has a 500cfm fan. You also know that the height of your ceiling is 8ft. So you multiply 500 x 60 = 30,000. Now divide by 6 air changes per hour = 5,000. Then divide by your room height of 8ft = 625. Now find the square root = 25. The machine is capable of cleaning a room size of 25 x 25 x 8ft. This should give you a rough idea of what room you could put this unit in.
It is important that you include the number of air changes per hour. Each air-cleaning device should be rated for 4-8 air changes per hour to ensure that all of the air in the room is getting “scrubbed”. When you can determine how much air is being cleaned and how clean that air is, you will know what the air purifier manufacturer don’t want you to know.
I hope this information has been helpful in helping you understand a very simple technology that sounds much like magic. To find out more about the simplicity of shopping for a room air purifier, go to www.allergy-relief-air-purifier.com
About the Author
John Hendrickson is the owner of Air Life Environmental Products, LLC and spends most of his day answering questions about indoor air quality. More of his information can be found at www.allergy-relief-air-purifier.com