The efficiency of a gas-phase furnace filter decreases as more pollutants are captured, so frequent maintenance is required. There have been concerns expressed that overloaded fibers may re- emit pollutants in some cases. The cost differences between materials can be significant. Not only are their products easily affordable for most homeowners, but they have been found in independent testing to be among the best, even when compared to significantly more expensive systems. Their furnace filters range in price from a few to $20, and they can be bought at many locations.
3M's Filtrete line goes beyond the usual MERV efficiency rating by focusing on a prater ability to capture particles between 0.3 and 1 micron. This changing furnace filter known as the Micro-particle Performance Rating (MPR). The higher the MPR, the better. Since furnace filters need air blowing through them continuously to work their best, costs could be added if you don't have a high -efficiency furnace fan. With Filtrete, you can also purchase a stand-alone unit to use the filters in. American Air Filter (AAF) has a finger on the pulse of almost every furnace filter type out there. As well they should; they've been making air filters since the 1920s.
A bevy of descender styles includes gas-phase, electrostatic and pleated, with a long list of choices for each.
So keep in mind that if you plan to get the full benefit from these air filters, electricity costs to run the fan will also be much higher.
An antimicrobial treatment stops the spread of trapped bacteria. They are rated MERV 7 and cost around $15. BreatheRight Ultra Allergy Shield - American Air Filter claims this 1-inch furnace filter is 225 percent more effective than standard fiberglass filters. Pleats allow the filter to cover six times the space and capture mold spores, dust, pollen, pet dander, bacteria and particles that may carry viruses.
It is rated MERV 11. Cut-N-Fit Natural Fiber Pad - Firm sheets of resin-coated material with a net backing changing furnace filter the 1-inch Cut-N-Fit customizable furnace filters. Fibers making up the pad are half coconut and half hog's hair. The filters can last up to three months but must be washed monthly for best performance. They have a MERV rating of 4. Gas-Phase - Replacement trane furnace air filter panels come with adsorbents like activated or impregnated carbon and potassium permanganate to remove a variety of volatile organic compounds, gases and odors. Some of these basic home-use furnace filters from American Air Filter can be purchased online, but others have to be obtained through dealers.