air flow

UV Sterilizers and Pleated Air Filters

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 [...]

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Can I use pleated air filters in my Honeywell electronic furnace filter?

Using pleated air filters in a honeywell electronic furnace filter instead of the electronic cells is very common. Usually a 4 inch thick pleated filter will fit into the opening. Sometimes 5 inch thick filters are required.

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Can an Air Filter Change Indicator Save You Money?

An air filter change indicator can potentially save you hundreds of dollars on replacement air filters and can even lead to reduced operating costs for your air conditioner, heat pump or furnace. How is this possible? Change your furnace filter or air conditioner filter too often and it’s like throwing money away. Wait too long [...]

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Using two electrostatic furnace filters

We have 2 filters one is in the furnace and 1 is leaning up against the wall…the slot is big enough for both filters, do I put them both in or would that restrict the airflow

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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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