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Purification

Question: You made an excellent Web site.  It is very informative and easy to understand. It is loaded with good information and excellent charts.  I just wanted to let you know that you did a first rate job. I was recently told by the company that installed the HVAC system in my now 3 year Read More

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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 Read More

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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 Read More

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