Furnace Filter Rating System

To determine resistance filters use the merv rating system.

Furnace filter rating system.

Merv air filter ratings range from 1 least efficient captureability to 16 very efficient. The filtrete ultra allergen reduction 1500 mpr filter earns a very good rating for removing smoke dust and pollen from the air with the system running on a high fan speed but is only. If we were looking to buy a new filter today for our hvac heating ventilation and air conditioning system we d aim for a medium efficiency filter with a merv rating in the 8 to 13 range which. In general filters with a rating of merv 16 or below are considered to be hvac system grade filters for residential commercial and general hospital use.

In short the higher the merv rating is the more resistant the filter is. It even captures extremely small particles that can negatively affect a person s health. The other two systems were created by 3m mpr and the home depot fpr to differentiate their offerings. Merv stands for minimum efficiency reporting value which is a rating system designed by the american society of heating refrigerating and air conditioning engineers ashrae.

The merv filter rating is the domestic and international industry standard rating system established by the american society of heating refrigerating and air conditioning engineers. Merv 17 through merv 20 filters are typically used in surgical operating rooms clean rooms and other contexts that require absolute cleanliness. Merv filter ratings and efficiency. The rating indicates the size of particles the air filter is designed to capture.

The filter traps smog bacteria dust debris mold viruses and various other respiratory irritants. The home depot air filter performance rating system fpr ranks all brands of filters the home depot sells by measuring their ability to capture large and small particles. Fpr ratings are on a scale from 4 through 10. With the correct merv rating and a pleated design this furnace filter improves the efficiency of your hvac system.

If your filter is either too dirty or too resistant it can cause airflow problems hurting efficiency and performance.