Question: Is There A Downside To High MERV Filters?

Is a 2 inch filter better than a 1 inch?

When it comes to a 1 inch vs 2 inch furnace filter you could use a 2 inch filter if your vent is deep enough and a 2 inch filter will generally last longer since it has more media..

How do I choose an air filter for my home?

Choosing the Correct Air FilterCheck Your Manufacturer’s Guidelines. Your HVAC manufacturer’s instructions will provide important details about the type of filter you should select for your system. … Look at the MERV Rating. The MERV rating tells you how efficient filters are at removing particles from the air. … Compare Disposable and Washable Options.

What is the best air filter for home use?

HEPA filtersHEPA filters Usually packaged as a HEPA “system,” these filters are the best of the best. VOCs, bacteria, viruses… HEPA filters capture nearly everything. Technically speaking, they trap particles as small as 0.3 microns in diameter, which is ridiculously small.

What MERV rating can my furnace handle?

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.

Is MERV 8 good enough?

The higher the MERV rating, the more efficient the air filter is at catching harmful pollutants in your home’s air. … MERV 5–8 (good): These filters are better at catching small particles (3–10 microns) like mold spores, hair spray, dust mites and animal dander. MERV 9–12 (better): The best option for residential use.

What MERV rating does Trane recommend?

MERV-13ASHRAE recommends upgrading air filters to MERV-13, or higher if possible.

How do I know what MERV filter to use?

MERV ratings range from 1 to 20, with lower ratings denoting a lower-quality filter.MERV 1-4 Filters: Filters with a MERV rating of 1 to 4 do little to trap harmful particles in your home’s air. … MERV 5-8 Filters: MERV ratings of 5 to 8 indicate a medium-quality filter that’s sufficient for most homes.More items…•

Is MERV 13 too restrictive?

In some cases, using an air filter that is too restrictive for your system may cause low air flow problems as well. MERV 13 is the highest MERV value safe for residential furnaces; the higher ratings are used primarily in commercial units. … ASHRAE recommends MERV 6 or higher.

What MERV rating is filtrete 1500?

3M Filtrete 1″ Air Filters Comparison Chart:Basic DustUltra AllergenAvailable in:9 sizes30 sizes* MPR Rating:3001500MERV Rating:512** Efficiency:34%90%5 more rows

Does higher MERV rating restrict airflow?

Here’s the problem: Some filters with a high MERV rating can drop air pressure in your duct system, which can increase energy bills and damage your HVAC system. … Because the filter is thin and the MERV is high, it reduces airflow into the duct system.

Is MERV 11 too restrictive?

Disposable pleated high MERV filters (11 to 13 MERV): High-efficiency filters can trap 0.3 micron particles like bacteria and some viruses. … HEPA filters drastically restrict airflow and should only be matched to a compatible system.

Is MERV 8 too restrictive?

If your unit is older and/or very sensitive with airflow, use a filter that ranks from MERV 1 up to possibly MERV 6. If you want your air to at least be cleaned and handle dust, mold, pollen, and bacteria, then a MERV 8 will do the job.

What MERV rating is best for home use?

Using an air filter with a MERV rating of about 5 to 8 is appropriate for most residential homes. MERV 5 – MERV 8 filters provide good filtration and will remove most pollen, mold spores, and dust mites.

How often should you change a MERV 11 filter?

every 6 monthsThe MERV rating also determines generally how often to change your furnace filter. MERV 8 filters should be changed every 3-4 months, MERV 10 & 11 filters every 6 months and MERV 16 filters every year.

Is MERV 15 a HEPA filter?

HEPA stands for High Efficiency Particulate Air filters and they are super-efficient. They will range from 17-20 MERV. HEPA filters meet standards that remove at least 99.97% of airborne particles down to the size of 0.3 microns.

What’s a disadvantage of the highest MERV rated filters?

The higher MERV filters have higher resistance. When you add more resistance, you can get a bigger pressure drop across the filter. And that’s where the problems begin. The blower in the furnace or air handler is rated for a certain amount of pressure drop.

What Merv is too high?

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 happens if you use the wrong size air filter?

When you use the wrong size air filter, or you install it incorrectly, the filter can’t effectively prevent dust from accumulating on the system’s motors and blowers. You’ll end up with a dirty furnace that can’t properly perform, and all of that debris could end up harming the system’s internal components.