How to Insulate Air Conditioner Coils

Window Air Conditioners

• 1

  Measure the width of a window air conditioner’s rear side of with a tape measure.

• 2

  Measure from the top edge down to the bottom edge to find its height.

• 3

  Measure from the top rear edge of a window unit up to the point where the unit enters the window to determine its length.

• 4

  Make certain that the air conditioner is turned off. Follow the manufacturer's instructions to install a window air conditioner cover that is the right size for the unit and is made of either vinyl or polyester.

Central Air Conditioners

• 5

  Measure from the left to right on the front side of a central air conditioner's outside condenser unit. This measures its width.

• 6

  Measure from the top edge down to the ground for the unit's height.

• 7

  Measure from the front edge to the back edge to learn the width. Measure from one side on top of the unit across to the opposite side to determine its diameter.

• 8

  Turn the air conditioner off. Follow the specific manufacturer's instructions to install a correctly sized outside air conditioner cover made of either vinyl or polyester that is the same shape of the unit.