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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 in relation to your heating and cooling sytem 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 better 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 let more air to advance through the filter, which can be helpful to the operation of the HVAC system. It’s important to have the perfect mix of air filter and MERV rating for your needs and your system. Call Calverley Service Experts Heating and Air Conditioning in Fort Worth today to let our experts walk you through which MERV rating is perfect for your home and family.

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

Here’s how Air Filter MERV Ratings stack up:

  • 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 indeed impact your indoor air quality, your family’s health and your lifestyle. So selecting the right air filter matters. Call Calverley Service Experts today at 817-380-5647. We offer a full range of air filtration choices, knowledge and expert service—and we’re here 24 hours a day for Fort Worth.

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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Calverley Service Experts Heating and Air Conditioning
5400 E Loop 820 SFt. Worth, Texas 76119
Sales and Service: 817-380-5647
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About Calverley Service Experts Heating and Air Conditioning
Service Experts Heating and Air Conditioning was founded on the basis of offering customers with the best heating and cooling practices in the industry. Since its inception, Calverley Service Experts in Fort Worth has been focused on community, providing the top of the line HVAC (Heating, Ventilation, Air Conditioning) products and services in the area. If you would like to more specifics about your regional HVAC leaders, you can reach us at 817-380-5647 or schedule an appointment with us online.
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