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ODOR DEFENSE™ has lower resistance to airflow than the higher MERV filters and does more to clean the air in your home or office.



Don't let the name fool you. ODOR DEFENSE does a lot more than just remove odors.

filters use a special carbon filter media Gray Matter® that not only removes foul odors and harmful gases, but also removes microscopic dust, and other contaminants and pollutants, the ones that can cause you trouble. For example, it captures pollen, mold spores, dust mites, cat and dog dander, and many more contaminants from the airflow in your home. By the way, mold spores are everywhere, and are a common component of household and workplace dust.

ODOR DEFENSE™ is a MERV 8, but if you have a preconceived idea MERV 8 is not good, listen to this. This filter has an arrestance as high as 95% and removes dust particles as small as 3 microns. These are the particulates that can cause you trouble. (As Per ANSI/ASHRAE STANDARD 52.2) To illustrate how small 3 microns are, the period at the end of this sentence is 615 microns. To illustrate further, the naked eye can see a particle only if it is bigger than 40 microns.



I was an air conditioning contractor for many, many years, and I can tell, ask any experience air conditioning contractor and he or she will tell you not to use a filter with a MERV rating higher than MERV 8. The reason is they know a higher MERV filter will cause your air conditioning system to work harder. This is because the higher MERV filter will put more resistance on the air flow of your system. This situation is not good for your system or your wallet.....Now, this is not to say you cannot use a higher MERV filter to capture even smaller particulates, just as long as you know there is a trade-off to consider.

The reason we so strongly recommend ODOR DEFENSE™ air filter is because it also removes and traps harmful gases that flow around the air in your home. These can come to your home in many ways and in many products, such as cleaning agents, pesticides, toilets, paints, pet odors, cooking odors, smoke, and many others. These gases are inhaled by you and your family members and can overtime damage lungs, poison your cells, cause allergies, and make you sick in many other ways. Whether you have allergies or not, you need ODOR DEFENSE on your side for a healthier, cleaner home.

To order,
choose your brand on the left menu and go to the ODOR DEFENSE filter. Use discount code 999

To find out more about BEC Technologies' Gray Matter , go to