
New to this store. I originally bought this because it seemed like the best filter and who doesn't want less allergens in their house. Well, after speaking to my best friend who sells stoves and air conditioners, he introduced himself. He says Merv's rating is too high and my blast furnace is getting overloaded. (yes, it depends on your oven) I also have a new Carrier oven. So check your oven and don't exceed the recommended rating.

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