How to Install a Ductless Mini-Split Air Conditioner | This Old House

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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Shopping List for How to Install a Mini-Split Air Conditioner:
– mini-split air conditioner [https://amzn.to/2vyimyj]
– ground pad [https://amzn.to/2Veahyb], for supporting condenser unit
– 1-inch-diameter PVC pipe and assorted fittings [https://amzn.to/2WkL6q7], used as condensate drain line
– PVC primer [https://amzn.to/2GQcbe7] and cement [https://amzn.to/2vxt6x3], used to join together PVC drain line 5. armor-sheathed electrical cable [https://amzn.to/2PKKGH1], provides line-voltage power to the air conditioner
– low-voltage wire [https://amzn.to/2LkaPOu], sends signal from air conditioner to condenser

Tools for How to Install a Mini-Split Air Conditioner:
– drill/driver [https://amzn.to/2UR4vxf]
– 1 _-inch hole saw [https://amzn.to/2IVdvjo], used to make hole for refrigerant lines
– level [https://amzn.to/2ZVAu3l], used to level pad that supports condenser unit
– drywall saw [https://amzn.to/2WjOQIz] or jigsaw [https://amzn.to/2PKAgar], used to cut hole in interior wall
– hammer [https://amzn.to/2ZTYvYy]
– pliers [https://amzn.to/2Vbozzj]
– wire strippers [https://amzn.to/2LkgVhP]

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How to Install a Ductless Mini-Split Air Conditioner | This Old House
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Comment (0)

  1. I’ve learned over the years , there’s this stuff called Nylog . It’s pretty much a liquid gasket that’s compatible with 410A and r22 . It comes in handy when making your flare connections and I will stand by it

  2. Lol. goes to shed to look for a massive rotary hammer drill with a 3 inch coring bit so I can start my project “oh would you look at that, I don’t have that. *Calls the local hvac installers to do this for me, as any homeowner should.

  3. I don't GET it. Why do you need refrigerant and compressors in all the mini-units?? Why not have a central unit with cooling coils, and just circulate antifreeze (through insulated pipes) to the wall units???

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