Question: Does Merv 8 Restrict Airflow?

Is MERV 8 good enough?

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.

Particles this small include bacteria, tobacco smoke and even the contaminants in sneezes..

Do Filtrete filters restrict airflow?

Even though pleated fiberglass filters are very common and are continuously highly recommended, there’s still a misconception around the filters being able to cause damage to your unit because they supposedly restrict air flow. Yes, pleated air filters do indeed restrict the airflow to your HVAC system.

How often should Merv 8 filters be changed?

every 3-4 monthsThe 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.

Are HEPA filters dangerous?

Bottom line: HEPA filters shed very few fibers over their lifetime, with the highest rate of shedding when they’re new. Although some studies have linked fiberglass to cancer, a summary of research suggests that the fibers are no more harmful than other dust in the air.

Is MERV 7 good enough?

For most residential systems, experts suggest using an air filter with a MERV value between 7 and 12. These filters offer adequate filtration and remove common contaminants such as pollen, mold spores, dust, pet dander, and tobacco smoke.

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

The higher the MERV rating, the more a filter can capture. Some filters may even capture certain viruses. Most systems expect a pressure drop of up to 0.5 inches, but high-MERV rating filters may cause a pressure drop higher than 0.18 inches, rendering the system even more inefficient.

Do HEPA filters restrict airflow?

High-efficiency particulate arrestance (HEPA) filters: These are the true high end of filtration and are able to filter out 0.3 micron particles. HEPA filters drastically restrict airflow and should only be matched to a compatible system.

Is MERV 7 too restrictive?

Although the MERV 7 filter is many times more efficient on all particle sizes than the fiberglass filter, the resistance is essentially the same. … Given the restricted air flow of some installed systems, even a 4” or 5” deep high efficiency filter cannot be used.

Which MERV rating should I buy?

We do recommend that everyone uses filters that have at least an 8 MERV rating. These filters will remove the majority of pollutants from your indoor air. If you have serious medical conditions making it difficult to breathe, you might want to get a filter with MERV 9-12 rating.

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 is the best air filter for home?

So here is my list of The 10 Best Furnace Filters.AIRx Health 1″ MERV 13 Furnace Filters. … Honeywell FC100A1037 Ultra Efficiency 4″ Furnace Filters. … Nordic Pure 4″ Furnace Filters. … FilterBuy 1″ Furnace Filters. … AIRx ALLERGY 1″ Furnace Filters. … Filtrete Micro Allergen 4″ Furnace Filters. … X6673 Lennox 4″ Furnace Filters.More items…•

Does air filters restrict airflow?

Because they restrict airflow to your HVAC system. Pleated, high-MERV filters definitely capture a lot of pollutants, but they also restrict the movement of air into your blower or furnace. … These cover all the air filtration basics – dust and pollen removal, for example – without restricting airflow.

What MERV rating can my HVAC handle?

Wrong. While the highest MERV ratings are the most effective for air quality, they can harm your HVAC system….Learn how to maintain your. home and HVAC this fall.MERVMinimum Particle Size5–810.0–3.0 μm9–123.0–1.0 μm13–161.0–0.3 μm17–20< 0.3 μm1 more row•Sep 20, 2019

What MERV rating does Trane recommend?

Below is a table grouping MERV ratings by particle size:MERVMin. particle size5–810.0–3.0 μm9–123.0–1.0 μm13–161.0–0.3 μm17–20< 0.3 μm1 more row