4” paper is fine
Quote:
Originally Posted by biker1
It doesn't really work that way for many systems. Systems with an ECM motor in the air handler will continue to produce essentially the same CFM as the filter becomes loaded. ECM motors are programmed to provide a specific amount of air flow. Of course, this is up to a point. A filter can become so loaded that the ECM motor cannot compensate. If you have a 4" media filter and no outstanding sources of "stuff" in the air, annual filter changes should be fine.
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I agree. Even when I change my paper filter annually, I see little dirt or debris. A slight discoloration at best. It would be pointless to get a 4 inch thick washable filter.
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.. though we cannot, while we feel deeply, reason shrewdly, yet I doubt if, except when we feel deeply, we can ever comprehend fully."—Ruskin
Borta bra men hemma bäst
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