Your furnace’s owner’s manual will specify the best MERV rating for your furnace, and in general, filters with a MERV rating of 6 through 9 should be changed every 90 days, while those with a MERV rating of 10 through 12 should be changed every 60 days.
Is a MERV 12 filter good?
A filter with a MERV rating of around 10 to 12 is sufficient to remove most allergy-causing particles from your home’s air. Most air filters that are able to remove common allergens will have the word “allergy” or “allergen” on their packaging.
Is MERV 12 too high for HVAC?
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.
Will MERV 12 hurt my furnace?
The short answer is this: The best MERV rating for your heating and air conditioning equipment is the MERV recommended by the manufacturer. It’s usually in the range of 8-12 MERV. … When in doubt, choose a MERV 8 to MERV 10 filter rated for high airflow, so it won’t damage your furnace or air handler.
How long do MERV filters last?
The basic recommendation for furnace filters replacement is every 3-4 months for MERV 8, every 6 months MERV 10 and 11 and every year for MERV 16.
Can I replace MERV 11 with MERV 12?
MERV 12 filters trap 80 to 89 percent of average particles of 1.0 to 3.0 microns, with an average particle size efficiency of 90 percent or better. As you can see, they’re pretty close. That’s why you’re just as good going with a MERV 11 as with a MERV 12. You will get decent results from either.
What does MERV 12 filter out?
What is a MERV rating?
|MERV Rating||Average Particle Size Efficiency in Microns|
|10||1.0 – 3.0 50% – 64.9%, 3.0 – 10.0 85% or greater|
|12||1.0 – 3.0 80% – 89.9%, 3.0 – 10.0 90% or greater|
|14||0.3 – 1.0 75% – 84%, 1.0 – 3.0 90% or greater|
|16||0.3 – 1.0 75% or greater|
How often should MERV 13 filters be changed?
For Merv 8, 11 and 13 filters, we recommend that you change your filter at least every 3 months, however changing your filter every 2 months provides better filtration which provides healthier and cleaner air in your home.
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. … By itself, using an upgraded HVAC filter is not enough to protect people from COVID-19.
Is MERV 13 too restrictive?
MERV 13 air filters are the highest-rated air filters for home use. Any air filter with a rating higher than 13 will restrict air flow to the point of which could cause damage to your HVAC system, resulting in an added expense to fix it.
Is MERV 11 too restrictive?
A MERV 11 air filter has a higher efficiency rating. Meaning, it can capture finer particles and clear more contaminants out of the air. … In most cases, a MERV 11 air filter isn’t too high for residential use.
Are Aerostar filters good?
Aerostar MERV 13 Pleated Furnace Filters
It’s suitable for people with allergies, and especially for the ones suffering from asthma. The efficiency of this product is mainly because of the high MERV rating and its sturdy construction.
What is a MERV 12 rating?
A filter with a MERV rating of nine to 12 captures particles greater than one micrometer. This includes most dust and common pollutants. Hospital laboratories and superior residential air conditioners fall within this range.
Is MERV 11 or 13 better?
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. On top of this, it can also trap bacteria and viruses.
Is MERV 13 better than MERV 8?
A filter with a MERV rating of 13 catches more contaminants and could be considered “better” than a MERV 8 filter. … A MERV 8 filter is best for New Jersey homeowners who are simply trying to keep their HVAC system healthy and clean and don’t want to spend too much on a filter.
Can I use a MERV 13 filter in my furnace?
The ideal MERV filters for both air filtering and furnace efficiency are 7-13, experts say. These filters can be used without any modifications to your equipment. Your system may handle MERV 14-16 with no discernable stress. However, many residential systems require modifications to pull air through these filters.