Is MERV 11 or 13 better?
Anything above 13 is mainly used for commercial/industrial purposes. A MERV 11 rated furnace filter can trap the majority of harmful contaminants that are present in the air. A MERV 13 filter is capable of filtering out all particle impurities like dust, lint, pollen, mold, dust mites, pet dander, smog, and smoke.
What is a good MERV rating for filters?
We do recommend that everyone uses filters that have at least an 8 MERV rating. These filters will remove the majority of pollutants from your indoor air. If you have serious medical conditions making it difficult to breathe, you might want to get a filter with MERV 9-12 rating.
What MERV rating is best for Covid 19?
What kind of filter should I use in my home HVAC system to help protect my family from COVID-19? Minimum Efficiency Reporting Values, or MERV, reports a filter’s ability to capture particles. Filters with MERV-13 or higher ratings can trap smaller particles, including viruses.
What is the difference between HEPA and MERV filters?
HEPA Filters: High Efficiency Particulate Air While a MERV 16 filter captures >95% of particles in the entire test range (0.3-10.0 microns), a HEPA filter captures 99.97% of particles with a size of 0.3 microns. The filtering efficiency is even higher for particles larger or smaller than 0.3 microns.
Can I replace MERV 11 with MERV 12?
Do you? In general no. In order to use a Merv 12 to replace a Merv 11, you need to know if you system can handle the extra pressure drop caused by the higher efficiency Merv 12. My heat pump/ ventilation system cannot support the pressure drop of a Merv 12.
What is a bad MERV rating?
Filters within a MERV rating of 17-20 are almost never necessary in a residential home. A MERV rating of 13-16 is considered hospital level air quality, so it is unlikely your home needs any more than that.
What MERV rating does a HEPA filter have?
MERV 17
All HEPA filters have a rating of a MERV 17 or higher. A HEPA filter with a MERV 17 rating will trap 99.97% of air particles that are 0.3-1.0 micron in size and an even better % of particles below 0.3 microns and above (HEPA filters are rated at their worst performance).
What is a HEPA filter MERV rating?
High-Efficiency Particulate Air (HEPA) filters are not MERV-rated, but a HEPA filter is typically considered as MERV 17 to 20, which is the highest group in MERV ratings. True HEPA filters have at least 99.97% efficiency in trapping 0.3-micron particles.
What MERV rating is HEPA?
What does Merv 8 filter mean?
MERV (Minimum Efficiency Reporting Value) is the industry-standard rating system used to measure the effectiveness of air conditioner filters. MERV 8 is the highest rating in the “Better Residential” category of filters.
What Merv should I use?
Most residential HVAC systems will use air filters with MERV ratings from 7-12. A higher MERV value of 5-16 would be recommended for commercial buildings. Anything above a 13 MERV rating is considered to be a High-Efficiency Particulate Arrestance ( HEPA ) filter, often used for hospitals and scientific research lab applications.
What are MERV 13 filters?
MERV 13 filters are high efficiency filters typically used insituations requiring very clean air such as hospitals, general operating rooms and clean air-sensitive commercial buildings.