Furnace Filter Questions and Answers

This is the section of our blog where we answer some of the questions asked by our visitors. Many questions have been answered here. If you can’t find the answer to your question just ask using the Contact form and we will answer by email or create an article for you here. We will only share your first name.

Never Stack Multiple Filters In Your HVAC Equipment

Bryan asked: Hi. This website is great; there is really good information. My question is regarding large filters. My furnace requires a 5-inch pleated filter, but because these are hard to find I have placed 5 1-inch pleated filters from 3M. Is this going to restrict too much airflow? Should I buy a 5-inch or [...]

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Upgrade Your Hogs Hair Filter To An Electrostatic Filter For Cleaner Air

Phil Asked: I live in a manufactured home with a Miller/Nordyne furnace/ac. It has a hogs hair filter. I was wondering if you know if I have to replace it with the same type? or can I use an electrostatic air filter instead.It is 6 years old and falling apart. Thanks for any advise For [...]

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Custom Air Filters For Your House

Sharon Asked: For reasons unknown to me, the builder of my 1,700 sq foot house installed a 32" x 25" x 1" return vent where my air/furnace filter goes.  No one (that I can find) makes a 32 x 25 filter. I had been using two 16 x 25s taped together down the middle, but [...]

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Electronic Air Cleaners and Ozone

When the topic of electronic air cleaners comes up it usually doesn’t take long for questions to arise about ozone. Due to several comments on this blog and questions I have received by email I thought I would share a link to a report I found, published by the US Environmental Protection Agency.

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Hog Hair Filters, Superior to Pleated Filters?

Robert from Florida asked: My new RUUD central air conditioner/electric heater for my Florida home came with a 21x21x1 hogshair filter. The installer says it is superior to the pleated kind I used to buy and that it can be washed so it is a less costly alternative. My wife has serious allergies. What do [...]

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