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A comment on Heat pumps of the 1800s are becoming the technology of the future. Parent comment

Re:Heat pumps of the 1800s are becoming the technology of th... by thedougd on Tuesday January 17, 2023 @03:47PM (#34418775)
No, not at all. I enjoyed it but my wife had a different expectation of completion date than I. My advice is to get the tools, don't shortcut, so that you have confidence at each step.

Stuff I had already specific to HVAC:

-R-410a manifold, gauges, and hoses.

Stuff I went out and bought:

-Nitrogen tank pressure regulator and hose for HVAC.

-Mandrel pipe bender

-Flaring tool

-Micron vacuum gauge

-A slightly better copper pipe cutter and deburring tool.

Stuff I rented/borrowed:

-Vacuum pump from Autozone. Free. It was plenty big enough for a minisplit.

-Full nitrogen cylinder rental from Airgas.

Things I'm glad I did:

-Used a wall mount instead of a pad for the compressor unit. Unit stays clean.

- Pressure testing with nitrogen. It's worth the money and effort to know up front it doesn't leak.

-Followed a more thorough procedure for vacuuming/drying which involves vacuuming down several times and flushing with nitrogen. I got a much better vacuum after subsequent flushes.

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Re:Heat pumps of the 1800s are becoming the technology of th... by mrexroad on Tuesday January 17, 2023 @03:59PM (#34419000)
Thanks for the follow up! I understand completely. Somehow my wife stuck with me after more than a few significant home projects with misaligned expectations around completion. Re: wall mounting vs pad. Do you find noise transmission to be a nuisance?
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Re:Heat pumps of the 1800s are becoming the technology of th... by thedougd on Wednesday January 18, 2023 @08:37PM (#34435674)
I was on the lookout for it, as it was a concern of mine. I haven't noticed an issue. It's also mounted on an exterior wall of my garage. That wall lacks insulation but has drywall. It may be more of an issue if it shared a wall with a bedroom. The mount has rubber dampeners between the unit and the arms.
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