What is the MERV rating on filters?
minimum efficiency reporting value
An air filter’s minimum efficiency reporting value (MERV) rating measures how effectively the filter stops dust and other contaminants from passing through the filter and into the air stream. Filters with higher MERV ratings trap small particles more effectively than filters with lower MERV ratings.
What is fpr rating?
The acronym FPR stands for filter performance rating. The FPR rating was developed by The Home Depot and is used for brands of HVAC air filters sold in its stores. FPR ratings are expressed in number and color. The FPR ratings scale for HVAC air filters starts four and ends at 10.
Is FPR 7 GOOD?
According to Home Depot, filters in the “Good” class are rated listed as FPR 4, and they will block pet dander, dust, and pollen. The next tier is the Better represents 6 – 7, but is listed at 7 FPR, and adds protection against bacteria along with mold spores.
Will MERV 13 hurt my 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 13 harm my HVAC?
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 12 too restrictive?
While the highest MERV ratings are the most effective for air quality, they can harm your HVAC system. A higher MERV rating means a higher resistance, which means less airflow….Learn how to maintain your. home and HVAC this fall.
| MERV | Minimum Particle Size |
|---|---|
| 9–12 | 3.0–1.0 μm |
| 13–16 | 1.0–0.3 μm |
| 17–20 | < 0.3 μm |
Is MERV 13 too much for residential?
Minimum Particle Size 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.
Can I replace MERV 11 with MERV 12?
We do not carry MERV 12; MERV 11 does just as good a job. 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.
