This is usually good enough to do the work of an average household. However, a merv 8 filter captures less than 20% of particles smaller than 0.3 microns. Based on the characteristics mentioned above, a MERV 8 is considered superior filtration compared to air filters with a lower MERV rating. But is that enough leakage? In many cases, a MERV 8 air filter is more than adequate.
However, if you are concerned about outdoor air pollution, family members with respiratory problems, pets are in the house, then choosing a higher merv rating might be a good idea. Is a MERV 8 rating enough? Yes. MERV 8 is good enough for air filtration in average residential homes. A MERV 8 filter can stop mold spores, pollen and most cleaning agents.
However, it is important to note that individual circumstances may require a filter with a higher MERV rating. Yes, the choice of the word “sinking” was intentional. It should be clear that you should not try to get down into a rocky MERV filter. Consider this answer an unequivocal “yes”.
If you or someone else in your household smokes, you need more filtration than what a MERV 8 provides. The higher the filter rating, the smaller the particles it will capture and the higher the percentage of particles captured. Low-efficiency filters are typically found within MERV 1-4 and high-efficiency filters are merv 13 and later. The MERV scale is not linear; the difference between a MERV 6 and a MERV 8 is almost double in the percentage of particles captured.
Please note that as the MERV rating increases, the filter becomes more restrictive and it will take more pressure and energy to push air through it. If you have difficulty breathing because of a health problem, you are far from alone. Millions of Americans suffer from respiratory diseases and related health problems. Problems such as asthma, COPD and allergies are affected by indoor air quality.
The solution to improve indoor air pollution starts with filtration. Specifically, which MERV-rated air filter should a homeowner use. While MERV 8 is good, it's not enough. The pandemic has highlighted respiratory health and indoor air quality.
More than ever, you need cleaner indoor air. Each air filter has its advantages and disadvantages, but both MERV 8 air filters and Merv 11 air filters are suitable for residential use. Filters with merv ratings from 1 to 4 usually don't advertise it because it's not a big selling point. Sometimes, particles such as pollen, pet dander and fine dust can get through the filter, unless you get one with a higher MERV rating.
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. However, to truly ensure clean and healthy air, MERV 13-16 filters are considered ideal for indoor spaces. If your home's HVAC system isn't capable of handling MERV 13, opt for a filter with the next highest possible rating. For example, if an air filter can capture at least 20% of E1, 65% of E2, and 85% of E3 particulates, it will earn a MERV 11 rating.
Because MERV 8 is at the top of what is considered best for homes, it can be tempting to choose a MERV 8 air filter. The Minimum Efficiency Report Value (MERV) tells you the efficiency of an air filter at its lowest performance level. While ASHRAE recommends MERV 13 and 14, it is best to select a filter with the highest possible MERV rating for your specific HVAC system. The same goes for households with smokers or pets, as Merv 11 air filters are better at eliminating odors.