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FILTERS - MERV CHART
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| MERV Rating | Average Particle Size Efficiency in Microns | Efficiency | Typical Application | Typical Air Filter Type |
| 1 | 3.0 - 10.0 | <20% | Window A/C Units | Electrostatic:
Self charging (passice woven polycarbonate panel filter. |
| 2 | 3.0 - 10.0 | <20% | Spray Paint
Dust Textile Fibers |
Washable:
Aluminum mesh, latex coated animal hair, or foam rubber panel filters. |
| 3 | 3.0 - 10.0 | <20% | Dust Mites Sanding Dust |
Throwaway: Disposable fiberglass or synthetic panel filters. |
| 4 | 3.0 - 10.0 | <20% | Pollen | Throwaway Disposable: Synthetic medial panel filters. |
| 5 | 3.0 - 10.0 | 20% | Pudding Mix | Throwaway Disposable: Synthetic medial panel filters. |
| 6 | 3.0 - 10.0 | 20% | Dusting Aids Cement Dust |
Pleated Filters: Disposable, extended surface (1-5 in.) thick w/ cotton-polyester blend media & cardboard frame. |
| 7 | 3.0 - 10.0 | 25-30% | Hair Spray Fabric Protector |
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| 8 | 1.0 - 3.0 | 20% |
Commercial Buildings Mold Spores |
|
| 3.0 - 10.0 | 70% | |||
| 9 | 1.0 - 3.0 | 35% |
Commercial Buildings Welding Fumes |
Bag Filters: Nonsupported Microfine fiberglass or synthetic media. Box Filters: Rigid Style Cartridge Filters (2-6 in.). |
| 3.0 - 10.0 | 75% | |||
| 10 | 1.0 - 3.0 | 50% | Milled Flour | |
| 3.0 - 10.0 | 80% | |||
| 11 | 0.30 - 1.0 | 20% |
Humidifier Dust Lead Dust |
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| 1.0 - 3.0 | 65% | |||
| 3.0 - 10.0 | 85% | |||
| 12 | 0.30 - 1.0 | 35.00% | Legionella | |
| 1.0 - 3.0 | 80.00% | |||
| 3.0 - 10.0 | 90.00% | |||
| 13 | 0.30 - 1.0 | 50.00% |
Commercial Buildings Copier Toner Most Face Powders Most Paint Pigments |
Bag Filters: Nonsupported Microfine fiberglass or synthetic media. Box Filters: Rigid Style Cartridge Filters (6-12 in.). |
| 1.0 - 3.0 | 85.00% | |||
| 3.0 - 10.0 | 90.00% | |||
| 14 | 0.30 - 1.0 | 75.00% |
Cooking Oils Most Smoke |
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| 1.0 - 3.0 | 90.00% | |||
| 3.0 - 10.0 | 95.00% | |||
| 15 | 0.30 - 1.0 | 85.00% |
Most Tobacco Smoke Proplet Nuceli |
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| 1.0 - 3.0 | 90.00% | |||
| 3.0 - 10.0 | 95.00% | |||
| 16 | 0.30 - 1.0 | 95.00% |
Medical Facilities All Bacteria |
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| 1.0 - 3.0 | 95.00% | |||
| 3.0 - 10.0 | 95.00% | |||
| HEPA | 0.3 | 99.95% | Carcinogenetic
Materials All Combustion Smoke |
Box Filters: Rigid Style Cartridge Filters 12" and deeper |
| Particles that are larger or smaller than 0.3 microns are captured with a greater than 99.97% efficiency | ||||
| ULPA | 0.12% | 99.999% | Radioative
Materials Carbon Dust Virus (unattached) |
Box Filters: Rigid Style Cartridge Filters 12" and deeper |
| Ultra-low Penetration Air (filter) | Cleanrooms | |||