re: MERV level on home AC filters in South Louisiana

quote:

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Are thick filters with all the bells and whistles just too thick for South Louisiana in the Summer?

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They can be for many places, especially in older units.

I had a heating and air guy tell me once, "If you have allergies and want super clean air in your house, use the high end filters that filter everything. If you want your new, expensive as hell unit to last, use the cheapest filters you can find."

He then told me that since he's in the bidness of fixing units that he'd suggest running the best, thickest, smallest-micron-catching filters I could find......with a wink and a nod.