A MERV 16 filter provides a hospital level of air filtration without any special electronic add-ons. By comparison, the cheap throwaway fiberglass filters costing $5 a month or so are MERV 1 to 4. This particular Lennox MERV 16 filter lasts up to a year

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These filters have worked great during the allergy season. It's amazing how much dust these filters trap. You can see the difference in the air and on the furniture.

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A Lennox electronic whole house air filter was installed when our house was constructed. The electronic filter was never very effective and the electronic components failed twice.By searching the internet on discountfurnacefilter.com I discovered that t