Buy 1, Get 1 Free On Humidifier And Air Purifier FiltersDetails:Call 24 Hours 1-800-997-2989 30 Day Money Back Guarantee Free Same-Day UPS Shipping Starbucks Card with Purchase Alphabetical Listing of Pages Austin Air HEPA Air Purifiers Austin Air Replacement HEPA Air FiltersBuyBlueair Purifier Model 503 for $659 from Ace Vacuums. We are the best seller of Blueair...Outperforms All Other 1" FiltersLasts 3 Months This Filtrete™ Filter meets Health House indoor air quality guidelines. - American Lung Association® and Health House® How Does The Ultra Allergen Reduction Filter Help Clean The Air In My Home?When your heat or central air conditioning is on, or if you run your fan continuously, air circulates in your home and passes through your air filter. Filtrete™ filters from 3M contain permanently electrostatically charged fibers that work like tiny magnets to attract and capture the particles in your air. Each of the filters in the Filtrete product line perform differently to meet various needs that people have. 

The following table (on packaging) shows types of particles that may be in the air in your home. These particles are measured in microns. Did you know that a human hair is about 70 microns in diameter? Particles smaller than one micro are most important to capture because they make up 99% of the number of particles in your air and can be breathed deep into the lungs.honeywell air purifier haze Microparticle Performance Rating (Including bacteria, dust, smoke and smog particles)innovera cd/dvd laser lens cleaner The above chart (on packaging) is designed to help you compare different filter types. air duct cleaning gibsonia paThe Performance Rating is a relative measure of a filter's efficiency at capturing airborne particles between 0.3 and 1 micron in size.

The higher rating means better filtration efficiency based on independent laboratory tests of leading brands. Note: Particles between 0.3 and 1 micron in size are classified as E1 particles by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). Larger Particle Efficiency(Including pet dander, mold spores, and other fungi) This graph (on packaging) depicts filter efficiency at capturing particles between 3 and 10 micros in size, which are classified as E3 particles by ASHRAE. How Often Do I Need To Change My Filter? Under normal conditions the recommended change interval is three months. However, the effectiveness and life of the filter can vary and will depend on the individual conditions in your home. Unusually dirty duct work, construction work, sanding projects, the number of pets, the presence of smokers, and running the fan continuously are some of the things that can shorten the life of your filter. In these cases, change the filter more frequently.

Do I Have To Worry About Restricted Airflow With Filtrete Filters? This filter is designed to operate appropriately in most residential furnaces and air conditioning systems. If your Filtrete filter remains in use longer than 3 months, it may begin to restrict airflow or cause the system to malfunction due to its high filtering efficient. It also could restrict airflow in some energy efficient furnace/air conditioning systems. In these cases, change the filter more frequently. If you have any questions, please call us at 1-800-338-3458. Filtrete filtering material will not support the growth of bacteria, mold, mildew or fungi in normal use. No unnecessary chemicals have been added to this filter. Is Filter Frame Strength Important? Yes, it is important for a filter frame to withstand pressure created by air movement through the filter without bending or collapsing. If a frame bends, it can allow unfiltered air to bypass the filter, or if the frame collapses, it can be drawn into the furnace fan.

Filtrete filters have reliable frame strength because they were designed to hold up even under severe conditions.Merv 12 at 1.5 meters per secondIt is a number from a test method designed by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). Generally speaking, a higher MERV indicates better filter performance. This Filtrete filter receives a MERV 12, the highest value obtained by any one-inch residential filter available. ASHRAE designed MERV to represent, with a single number, a filter's performance over many different particle sizes. However, the MERV calculation for one-inch residential air filters does not consider a filter's ability to capture the particles smaller than one micron in size. 3M believes it is crucial to measure a filter's ability to capture these submicron-sized particles because they can be breathed into the deepest areas of the lungs. This is why 3M goes beyond MERV with an additional performance rating that focuses on a filter's ability to capture submicron-sized particles.

3M's rating uses the same ASHRAE test method that generates MERV, but uses only the data for capturing particles between 0.3 and 1 micron. American Lung Association®/ Health House® wants you to know... Filtrete filters from 3M are one way to help improve the air quality in your home. You should also control pollutants at their source and adequately ventilate your home as key elements of an overall strategy from improving the quality of air in your home. The American Lung Association Health House Project develops guidelines for designing and constructing homes that are healthier and more energy efficient. Through its Health House Project, the Lung Association has established indoor air quality guidelines in an effort to help people choose products that will help to improve the quality of the air in their home. This Filtrete filter meets the Health Home indoor air quality guidelines. 3M is proud to make an annual contribution to the American Lung Association in order to help fun an education campaign designed to generate awareness and educate people about indoor air quality issues.