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: https://www.youtube.com/watch?v=31Lo2tnMb5E&list=PLkJADc1qDrr-ZmCu0t_YNmTXHVt80JDyE&index=17

How to Install a Portable Air Conditioner: https://www.youtube.com/watch?v=J8v934vbeBQ