Ductless Do-It-Yourself AC Wall Units

If your home does not have central air conditioning and you do not want the hassle of installing and removing window-mounted air conditioners every year, a ductless wall air conditioning unit may be an appropriate option. This type of air conditioner, which connects to an outdoor compressor via a conduit, can help cool a room without the need for window-mounting or extensive ductwork. Installing a ductless wall air conditioner is a relatively straightforward task.

Patio slab
Drill
Masonry bit
Lag bolts
Impact wrench
Reciprocating saw
Electric screwdriver

Instructions

- 1
  Determine the location of the outdoor compressor. The compressor should sit on a hard, level surface within 50 feet of the wall unit -- a patio slab can support the compressor on level ground.
- 2
  Place the compressor unit on the slab. Drill through the holes of the mounting tabs into the concrete with a drill equipped with a masonry bit. Tighten lag bolts through the mounting tabs with an impact wrench to secure the compressor to the slab.
- 3
  Mark a 3-inch-diameter circle on the interior wall where the indoor unit will sit. Cut the interior and exterior of the wall along the outline with a reciprocating saw to make a hole for the conduit connecting the indoor unit to the compressor.
- 4
  Feed the power cable, condensation drain, suction tubing and refrigerant tubing through the 3-inch-diameter conduit. Run the conduit through the hole to the indoor unit.
- 5
  Connect the condensation drain, refrigerant tubing and suction tubing to the indoor unit. Attach the indoor unit to the wall using the included screws and an electric screwdriver.
- 6
  Plug the compressor and indoor unit power cords into a nearby outlet. Turn on the indoor unit to test the ductless air conditioning system.

Information on Old Trane Air Conditioners

Window AC Units: Wattage Use

Air Conditioners