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Air Filter MERV Ratings
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  2. Indoor Air Quality
  3. Air Filtration Systems
  4. Air Filter MERV Ratings

Remember to Look for the MERV Rating for your Air Filter

MERV here stands for Minimum Efficiency Reporting Value, a value that lets us know the size of particles an air filter is designed to catch. Higher MERV ratings are more effective at capturing smaller particles. That’s why hospitals tend to use MERV 16 or higher, to capture the most pollutants possible.

Although lower MERV rated filters are less efficient overall, they allow more air to advance through the filter, which can be helpful to the operation of the HVAC system. It’s important to have the appropriate mix of air filter and MERV rating for your exact needs and your system. Call Bryant Heating & Cooling Service Experts in Windsor today to let our experts walk you through which MERV rating is needed for your home and family.

The American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), which developed the MERV rating, suggests filters with minimum MERV ratings of 6. The U.S. Department of Energy proposes a minimum of MERV 13. For the best overall solution for most homeowners, acquire an Air Purification System, which comes with a MERV 16 media filter, and you’ll be in good shape for years.

Here is a snapshot of the MERV Ratings:

  • MERV 1 to 4— <20% of large particles (3 to 10 microns) are captured
  • 5 to 7—Between 20% and 69% of large particles are captured
  • 8 to 10—Approximately 85% of large particles and 50% of small particles (1.0 to 3.0 microns) are captured
  • 11 to 16—More than 90% of large particles and between 70% and 90% of small particles are captured
  • 17 to 20—Even the smallest particles (< 0.3 microns) are captured

The right MERV rating on the right filter could strongly influence impact your indoor air quality, your health and your lifestyle. So choosing the right air filter matters. Call Bryant Heating & Cooling Service Experts today at 226-773-3357. We carry a full range of air filtration choices, knowledge and expert service—and we’re here 24 hours a day for Windsor.

MERV Rating Chart
MERV Rating Dust Spot Efficiency Arrestance Typical Controlled Containment Typical Applications Air Filter/Cleaner Type
20 N/A N/A < 0.30 pm particle size Clean rooms >99.999% eff. On 10-20 pm Particles
19 N/A N/A Virus (unattached) Radioactive Materials Particles
18 N/A N/A Carbon Dust Pharmaceutical Man. Particulates
17 N/A N/A All Combustion smoke Carcinogenetic Materials >99.97% eff. On 30 pm Particles
16 N/A N/A 0.3-1.0 pm Particle Size General Surgery Bag filter - Non-supported microfine fiberglass or synthetic media, 12-36 in. deep, 6-12 pockets
Box filter - Rigid Style CartridgeFilters 6 to 12" deep may use lofted or paper media
15 > 95% N/A All Bacteria Hospital Inpatient Care
14 90% - 95% > 98% Most Tobacco Smoke Smoking Lounge
13 89% - 90% > 98% Proplet Nuclei (Sneeze) Superior Commercial Buildings
12 70% - 75% > 95% 1.0 - 3.0 pm Particle Size Legionella Superior Residential Bag filter - Non-supported microfine fiberglass or synthetic media, 12-36 in. deep, 6-12 pockets
Box filter - Rigid Style CartridgeFilters 6 to 12" deep may use lofted or paper media
11 60% - 65% > 95% Humidifier
Dust
Lead Dust
Better Commercial Buildings
10 50% - 55% > 95% Milled Flour
Auto Emissions
Hospital Laboratories
9 40% - 45% > 90% Welding Fumes
8 30% - 35% > 90% 3.0 - 10.0 pm Particle Size Commercial Buildings Pleated Filters - Disposable, extended surface area, thick with cotton-polyester blend media, cardboard frame
Cartridge Filters - Grated density viscous coated cube or pocket filters, synthetic media
Throwaway - Disposable synthetic panel liner
7 25% - 30% > 90% Mold Spores
Hair Spray
Better Residential
6 < 20% 85%-90% Fabric Protector
Dusting Aids
Industrial Workplace
5 < 20% 85%-90% Cement Dust Paint Booth Inlet
4 < 20% 75%-80% > 10.0 pm Particle Size Pollen Minimal Filtration Throwaway - Disposable synthetic panel liner
Washable - Aluminum Mesh
Electrostatic - Self-charging woven panel filter
3 < 20% 70%-75% Dust Mites
Sanding Dust
Residential
2 < 20% 65%-70% Spray Paint
Dust
 
1 < 20% < 65% Textile Fibers
Carpet Fibers
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Bryant Heating & Cooling Service Experts
3194 Devon DriveWindsor, Ontario N8X 4L2
Sales and Service: 226-773-3357
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Email: bryant@serviceexperts.com
About Bryant Heating & Cooling Service Experts
Service Experts Heating and Air Conditioning was built on the basis of offering customers with the top of the line heating and cooling practices in the industry. Since its inception, Bryant Heating & Cooling Service Experts in Windsor has been faithful to our area, delivering the first class HVAC (Heating, Ventilation, Air Conditioning) products and services in the area. If you would like to more information about your area HVAC leaders, call us at 226-773-3357 or reserve an appointment with us using our online form.
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