Jeremy ShanksFree winter guide
VideosHeating & cooling

Heating & coolingAug 20, 202640 min

I Installed a Mini Split to Fix My Hot Workshop

I installed a 24,000 BTU Senville mini split in my garage workshop from start to finish. This walkthrough covers pulling a new 240-volt circuit, routing the wire through the attic, mounting and wiring both units, connecting and vacuuming the lines, testing the system, and finishing the installation.

I also explain why Senville’s 46°F freeze-protection mode made this unit a good fit for a workshop that needs cooling in summer and protection from freezing in winter.

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The cover of the air filter guide

Free heating & cooling guide

Choosing the Right Air Filter

Find the highest MERV your system can take, buy the right size every time, and change it before it causes trouble.

  • The 2-minute decision path: four questions to the highest MERV your system can take.
  • At the store: MPR and FPR to MERV, and what each MERV catches.
  • Change it right: six steps, and how to find your own interval.

Get the air filter guideFree · 11 printable pages · Sent by email

In this video

  1. 00:00Intro
  2. 00:21The Mini Split
  3. 00:53Pulling the Wire
  4. 05:43Attic Wiring
  5. 07:20Prepare wall for mounting
  6. 08:33Mount wall unit
  7. 10:16Mount AC disconnect
  8. 13:39Wire indoor unit
  9. 15:44Bend indoor lines
  10. 17:40Next day recap
  11. 19:40Connecting outdoor lines
  12. 24:35Wire outdoor unit
  13. 26:22Vacuum the lines
  14. 30:09Wire breaker panel
  15. 32:26Disconnect vacuum pump
  16. 33:47Release refrigerant
  17. 35:04Testing the AC
  18. 35:24Wrapping Lines
  19. 37:45Put panel cover back on
  20. 38:02Why the Senville