Question: I was recently told that I could put (4) 1” inch filters together and use as a replacement for the expensive 4 inch pleated filter in my Aprilaire Spaceguard furnace filter system. It is never a good idea to stack filters in this way. It restricts air flow and can cause the air conditioner [...]
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Question: I have a Water Furnace and currently use a pleated filter with a MERV 5 rating. how high can I go before I start restricting the flow too much and damage the system? A Merv 5 filter is really not very efficient. If you have a properly sized duct system and you change your [...]
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