Does merv 13 make a difference?

A merv 13 filter is a step in the right direction and captures more particulates than a typical merv 8 filter. However, it is not as good at capturing small particles the size of a virus as a HEPA does. A MERV 13 will trap less than 75% of air particles 0.3-1.0 microns in size (the coronavirus is 0.1 microns). In general, filters with higher merv ratings capture higher percentages of particulates as well as smaller particles.

And MERV-13* is practically where you want to be. Filters with a merv rating above 13 are tightly woven to capture potentially harmful contaminants. That restriction would make it difficult for air to circulate from your home to the unit. If you're still unsure which MERV rated filter is best for your home, talk to an HVAC expert who will guide you to the right selection.

I just watched an FB video from AI I just saw an FB video of a British doctor who says that vacuum bags are NOT safe for masks, since they contain fiberglass, which is very bad for breathing (and worse when the bags have been cut to make inserts) YES, however, the MERV air filters are, as I am reading, made of polyester and cotton, should be safe. Second, ASHRAE is now encouraging the switch to MERV-13 (ASHRAE Position Paper on Infectious Aerosols) as a measure to provide cleaner air in non-sanitary facilities. This means that things like pet dander, smoke, and some bacteria in the air are likely to pass through a MERV 8 filter. Yes, I'm looking for the same thing Yes, I'm looking for the same answer about using a merv13 pleated air conditioning filter as part of a mask.

With the lowest MERV rating (1-), the filter will continue to capture pollen, dust mites, cockroach debris, sanding dust, spray paint dust, textile fibers and carpet fibers. Although the American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE) suggests MERV 13, it may not be the most efficient option for some residential HVAC systems. When you have a filter from Merv 13 and above, it is more similar to the material you would find in an n95 dust mask. I'm wearing a MerVi cape.

I am using a layer of Merv 1900 3M Filtrete on my mask (I made the mask as a cover so I could remove the filter to wash it). It is best to adhere to the oven manufacturer's recommendations or consult an HVAC professional to determine exactly which MERV rating is best for your specific system. MERV 13 filters, for example, also remove bacteria, tobacco smoke, car fumes, insecticide dust, pet dander and more. Filter technology has grown by leaps and bounds over the years, and MERV ratings are designed to help us determine the most effective and efficient air filter options for heating and cooling systems and beyond.

My impression is that my impression is that ductless heads, having no ducts, do not have the ability to mount much pressure head and, therefore, I would look elsewhere for high-efficiency filtration, be it plug-in HEPA cleaners or a dedicated ducted fan designed for use with a HEPA or MERV-13 filter. A MERV rating of 13 to 16 is considered hospital-level air quality, so your home is unlikely to need more than that.

AnnMarie Noland
AnnMarie Noland

Amateur coffee expert. Certified twitter enthusiast. Wannabe web aficionado. Certified web trailblazer. Proud twitter buff.

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