MERV 13 Filtration - Now available in 1-2-4 and 5" Filters
I receive many questions regarding Pleated filters and what is the "Best"
filter available today. Now since many of our customers utilize 1", 2'
and 4" filters, I will address only standard size filters.
American Society of Heating, Refrigeration and Air-Conditioning
Engineers (ASHRAE) designed a scale to rate the effectiveness of air
filtration back in 1987. This scale is known as the MERV (Minimum
Efficiency Reporting Value). The higher the number - the better the
There is a balance between cost of replaceable filters - suggested length of service - and filtration.
Recently MERV 13 filtration has been designed and released into 1", 2" and 4" pleated filters.
Below is a pictorial of how a MERV 13 filter is designed.
- a major manufacturer of Air Filtration released the MERV 13 pleated
filter optimized for "LEED" compliance in new and existing building as
well as providing a cost effective upgrade to the popular MERV 11
| MERV Rating|| Examples of airborne particles|
| 13 - Best|| All bacteria|
| Particulate size.3-1.0 microns|| Croplet nuclei (sneeze)|
| <75%|| Cooking oil|
| Particulate size1.0-10.0 microns|| Most smoke|
| 90% >|| Insecticide dust|
| || Most face powder|
| || Most paint pigments|
| 11 - Better|| Legionella|
| Particulate size1.0-3.0 microns|| Humidifier dust|
| 65% -79%|| Lead dust|
| Particulate size 3. to 10|| Milled Flour|
| 85%>|| Auto emissions particles|
| || Nebulizer drops|
| 8 - Good|| Mold|
| Particulate size3.0-10.0 microns|| Spores|
| 70% - 85%|| Dust mite body parts and droppings|
| || Cat and dog dander|
| || Hari spray|
| || Fabric protector|
| || Dusting aids|
| || Puding mix|
| || |
Particulate size is measured in Microns or 1/1000 of a milimetre - and I have listed know common airborne items.
Furnace Filter Warehouse is
a leading supplier of the latest technology MERV 13 filters. Should
you wish to read additional information regarding these filters - please
access the link below.
Glasfloss MERV 13 Filter Detail