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Higher MERV rating also means less air flows through, which can have an impact on AC/heater performance. They also need to be changed more often since they catch more. Personally, I prefer a rating of at least 11 or allergens will give me grief. And I have to spend time dusting far less often with 11+.
I have not tried them yet since I'm waiting to run out of the ones I'm currently using, but K&N are known for their filters, specifically their car / motorcycle air filters.
i was able to add 20x30 in cart if i have another size filter in the cart, maybe try that.
Same issue for me. I had another filter in cart but could not add 20x30. What filter you had in cart before adding 20x30? May be it is zip code issue. What zip code worked for you? Thanks in advance
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I have not tried them yet since I'm waiting to run out of the ones I'm currently using, but K&N are known for their filters, specifically their car / motorcycle air filters.
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