If you have one of those old in-wall air conditioners, you can pull it out and fill in the hole yourself

Steps

  1. 1
    Remove any trim on the inside and cut away all caulk on the outside.
  2. 2
    Remove the front of the A/C.
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  3. 3
    Remove the motor and fins.
  4. 4
    Remove the metal shell, use the wonder bar to pry it out of the wall.
  5. 5
    Frame the opening with 2-by-4s and cut a piece of drywall that will fit.
  6. 6
    Screw the drywall into the 2-by-4 frame and use the joint compound to cover any holes.
  7. 7
    Press tape into the joint compound and add another thing layer of joint compound.
  8. 8
    Cover screw heads with joint compound.
  9. 9
    Spread a layer of mud over the joints again.
  10. 10
    Wait for the compound to dry and then sand it smooth.
  11. 11
    Insulate the opening with fiberglass insulation, the paper side goes towards the inside of the home.
  12. 12
    Measure and cut a piece of plywood to cover the hole and screw it into the 2-by-4 frame.
  13. 13
    Nail in the siding and/or shingles.
  14. 14
    Paint the inside/outside as you like.
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Things You'll Need

  • Cordless Drill
  • Circular Saw or Miter Box
  • Drywall Saw
  • Utility Knife
  • Mud Knife
  • Taping Knife
  • Wonder Bar
  • Sandpaper (220-Grit)
  • Sheet of Plywood
  • Insulation
  • 2-by-4 board
  • Joint Compound
  • Shingles(matching outside of house)

About This Article

wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, volunteer authors worked to edit and improve it over time. This article has been viewed 35,476 times.
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Co-authors: 3
Updated: September 26, 2022
Views: 35,476
Categories: Air Conditioning
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