furnace filters

New chart to help compare air filters

One of the problems when trying to compare the different types of furnace filers available is that there is quite a bit of information to sort through. When trying to compare efficiencies, brands, MERV ratings, price, characteristics and the types of filters available, you can suffer from information overload. The first thing to do before [...]

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UV air filters and drain pans

Question: Do you think there is  any problem with ultraviolet furnace filters as far  as it depleting the inside of the Duct liner or plastic or rubber that the ultraviolet rays bounce off. It depends on the type of plastic your condensate pan is made of.  Some of the newer drain pans are UV resistant [...]

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UV air cleaners and efficient air filters

Question: I have a UV air cleaner in my home.  What MERV rating air filter do I need to use?  Would it be beneficial to use a MERV 11 filter or would a MERV 8 work?  I change my filter every month when it’s running but I will go for 3 months.  I have changed [...]

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Aprilaire Spaceguard Furnace Filter and Air Conditioner Filter Replacement

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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How to Determine Furnace Filter Size

Question: I measured the metal frame of my furnace filter at 19 1/2 x 24 1/2 x 3/4 inches but after looking closer at it I saw a measurement of 20 x 25 x 1 on the frame. Now I’m not sure what size filter to replace it with. Shopping for a new air filter [...]

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