How to Install a Ductless Mini-Split Air Conditioner

This Old House plumbing and heating expert Richard Trethewey explains how to install a mini-split air conditioner. (See below for a shopping list and tools.)

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Full episode:

How to Install a Portable Air Conditioner:

How to Install a Towel Warmer:

How to Maintain a Steam Radiator:

Shopping List for How to Install a Mini-Split Air Conditioner:

  • – mini-split air conditioner
  • – ground pad, for supporting condenser unit
  • – 1-inch-diameter PVC pipe and assorted fittings, used as condensate drain line
  • – PVC primer and cement, used to join together PVC drain line 5. Armor-sheathed electrical cable, provides line-voltage power to the air conditioner
  • – low-voltage wire, sends signal from air conditioner to condenser

Tools for How to Install a Mini-Split Air Conditioner:

  • – drill/driver
  • – 1 ½-inch hole saw, used to make hole for refrigerant lines
  • – level, used to level pad that supports condenser unit
  • – drywall saw or jigsaw, used to cut hole in interior wall
  • – hammer
  • – pliers
  • – wire strippers