Quick question about forced-air electric furnaces

Discussion in 'HVAC Heating & Cooling' started by Steve Hinkamp, Dec 9, 2010.

  1. Steve Hinkamp

    Steve Hinkamp New Member

    Aug 5, 2009
    I noticed that my forced-air electric furnace has two 3/4" holes on the metal frame that holds the furnace filter. Air can flow through them. Do these serve a purpose, possibly to prevent excess pressure if the filter gets too clogged? I was thinking of plugging them for better air quality if they serve no purpose. Thanks.

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