Minimum Efficiency Reporting Value, or MERV for short, is a filter rating system devised by the American Society of Heating, Refrigeration and Air conditioning Engineers (ASHRAE) to standardize and simplify air filter efficiency ratings for the public. The higher the MERV rating, the higher the efficiency of the air filter. Simply stated, a MERV 12 filter will remove smaller particles more efficiently from the air than a MERV 8 filter.

A MERV 12 rating represents the best balance between airborne particulate removal of dust, pollen, airborne pathogens, etc. and overall HVAC system efficiency. Air filters above MERV12 generally require larger, more expensive HVAC systems not normally intended for traditional home or smaller office heating and air conditioning systems. This is due to the “drag” imposed on the HVAC system. Top-notch HVAC professionals who buy from us daily highly endorse the MERV 12 rating as providing the highest efficiency of an air filter while not overtaxing the HVAC system.

Overall, the best filter to buy for your home will have a MERV 12 rating. Smaller than that won’t extract the airborne allergens nearly as well, and bigger than that puts too much “drag” on the HVAC system. Higher than MERV 12 ratings are usually used on commercial buildings.

Nordic Pure’s air conditioner furnace filters do not allow the growth of mold or bacteria, keeping your home healthier. No harsh chemicals are necessary to make the air conditioner furnace filter "antibacterial". Our air conditioner furnace filters use permanently charged electrostatic material that helps dust cling to the air conditioner furnace filter. Airborne allergens are drawn to our pleated design like a magnet and stay there!

If allergies or asthma are your concern, we suggest you choose a Nordic Pure’s electrostatically charged MERV 12 pleated air filter.

Pleated air filters do the best job in trapping airborne particles and protects your family from allergy causing pollen, fine dust, tobacco and cooking smoke, airborne plant spores, bacteria, and some viruses. You can rest better knowing that your decision to use our best furnace filters will help ensure the well-being of your loved ones.