Quote:
Originally Posted by RickeyD
Well for starters, the evaporator will stay cleaner, the blower wheel won't get buildup on its vanes, the return and supply ducts will remain cleaner, there will be less dust in your house, your sinuses will really appreciate it as well. Nough said ?
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Well, RickeyD, that's all I needed to know. I've never lived in an area where 4" filters are used. And I do think it is enough said.