air flow

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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Why You Should Change Your Air Conditioner Filter Regularly

Question: If you don’t change your air filters and they are very dirty can this cause the central unit to freeze up? Will the unit be ok by changing the air filter? We had this happen 2 times before and we changed the filters. Our unit is only 2 years old. Central Air Conditioner Icing [...]

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Trane CleanEffects Electronic Filter Review

Review of the Trane CleanEffects Electronic air filter.

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Which Pleated Filter is Better 7 Pleat or 11 Pleat

Here we look at the number of pleats per inch of pleated furnace filter. More efficient pleated air filters usually have more pleats per inch for a couple of reasons.

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Best Furnace Filters – Top Picks

This is a review of some of the best furnace filters available for home owners. Here we compare four of the most popular types of filters used and list some of the benefits and disadvantages of each type.

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