How to Clean a Permanent Furnace Filter

TTADC September 18, 2012 4

Cleaning a permanent style (not disposable) furnace filter is a frequently neglected but important household chore. Cleaning your own filter keeps your system safe while it runs at peak efficiency. Here’s a handy four-step guide to making sure your filter is squeaky clean:

  • First, turn the HVAC unit off. Carefully remove the filter according to the manufacturer’s instruction.
  • Use your vacuum or shop vac to remove most of the surface dirt from the filter.
  • Clean the filter with warm soapy water. To remove dirt and soap residue, rinse the filter with clean, warm water. Repeat as needed.
  • Carefully replace filter according to the manufacturer’s instructions, and double-check it has been inserted properly. (sometimes there is a direction of air flow)
  • Turn the power back on.


  1. SandyDee76
    SandyDee76 September 21, 2012 at 10:14 pm -

    I have been washing the filter incorrectly, thank you for your advice.

    • ductmasters
      ductmasters October 4, 2012 at 4:10 pm -

      As we already suggested you should also consider the disposable filters. They work very well as filtration with no worries to clean.

  2. Steve Dune February 9, 2013 at 5:36 am -

    Nice piece of advice for furnace filter cleaning. I am so worry about it.

  3. bredon adam May 22, 2013 at 12:35 pm -

    Ducted air cleaning is process of Improving the condition and quality in heating and cooling your home or offices. It has ability to adjust the temperature itself according to your surroundings so as to solve the problems of being too hot or too cold.

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