How efficient is a MERV 11 filter?
MERV 11 rated air filters have a filtration efficiency of a little over 90%, making them highly efficient. MERV 11 furnace filters effectively trap pollen, dust, lint, dust mites, and mold, along with smoke, pet dander, smog, auto emissions, bacteria, and other such fine particles.
Is MERV 11 good enough for Covid?
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 a MERV rating of 11?
A MERV 11 rated filter captures 85% or better of particles between the sizes of 0.3 and 10 microns. This may not seem like a significant difference compared to the MERV 8 filter, but a MERV 11 is also more capable of capturing between 65% and 79% of smaller particles.
Can my HVAC handle MERV 11?
In particular, using an air filter with a MERV rating that’s too high can damage the compressor, heat exchanger, and air conditioner coil. In most cases, a MERV 11 air filter isn’t too high for residential use.
Does a MERV 11 filter restrict airflow?
Be aware, too, that some retailers also use their own rating system instead of MERV. A decade ago, it used to be that if you had an HVAC system that used panel filters rated 6 through 9 MERV, putting in a MERV 11 or higher filter would restrict airflow (known as filter pressure drop).
What filter will block COVID-19?
it is designated as High-Efficiency Particulate Air (HEPA), it is CADR rated, or. the manufacturer states that the device will remove most particles in the size range below 1 um.
Is MERV 11 better than 12?
MERV rating 9-12 Filters in this range can trap more than 85% of the particles sized 3.0-10.0 microns. A MERV 9 will trap less than 50% of particles sized 1.0-3.0 microns, MERV 10 will stop up to 64%, MERV 11 will get up to 79%, and MERV 12 is capable of catching up to 89%.
How often should you change a MERV 11 filter?
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. There are other several factors to consider when determining when to change your home air filter.
Are Merv 11 air filters worth it?
MERV 11 air filters are a little more expensive than a standard filter, but paying a few dollars more per filter is usually worth the added efficiency. Some situations warrant a higher MERV 11 rating.
Is Merv 11 too high for your needs?
A MERV 11 air filter has a higher efficiency rating. Meaning, it can capture finer particles and clear more contaminants out of the air. But is MERV 11 too high for your needs? Using an air filter with a MERV rating that’s too high is just as bad as using one that’s too low.
What can a Merv 8 air filter trap and block?
A MERV 8 air filter can trap and block the following: 1 Pollen 2 Dust mites 3 Mold 4 Large dust particles
What is the MERV 13 equivalent of air cleaning?
Air cleaning technologies can be combined to produce the desired MERV 13-equivalent level of air cleaning. For example, if a MERV 11 filter is used with UV-C, the UV-C device should provide at least 60% inactivation efficiency in conjunction with the filter to equal the efficiency of a MERV 13 filter (for 1-3 um particles).