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Discussion Starter · #1 ·
After fixing my central air a handful of times the past few years it's finally gone out for the last time I'm willing to deal with. I've decided to go with all mini splits, I installed one last week for the main living area and I'm putting one in each other the three bedrooms. This gives me redundancy, heating/cooling combined (furnace has been out for years but I'm in AZ so I didn't care much), lower noise, lower utility costs, ease of replacement, no ducts to deal with. I'm all around very very happy with the decision so far.



My question though is what's "needed", what are the "essentials" and where is the point of diminishing returns? I'm in the buy once cry once camp and imagine between cars, splits, and other projects I'll be doing 1-2 little jobs a year. I have a good flare tool, cheap manifold set, cheap pump, but I'm missing a core tool, higher quality pump, scale, digial micron gauge and so on. I do have a 25lb tank of 410a and a 30lb tank of 134a and I can get the basics done but I'd like to move to the prosumer level and would like some idea what to spend the money on and where it just isn't needed.


Thanks a lot in advance!
 

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Depends on how far you want to go.

Vacuum pump
Reclaim machine
Reclaim tank
Nitrogen
Nitrogen regulator
Nitrogen flow regulator for purging
Scale
Leak detector
Micron gauge
Vacuum rated hoses
Vacuum rated core removers
Meter

Essential can mean a lot or a little. Depending on how much repair work you plan to do.
 

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Discussion Starter · #3 ·
Depends on how far you want to go.

Vacuum pump
Reclaim machine
Reclaim tank
Nitrogen
Nitrogen regulator
Nitrogen flow regulator for purging
Scale
Leak detector
Micron gauge
Vacuum rated hoses
Vacuum rated core removers
Meter

Essential can mean a lot or a little. Depending on how much repair work you plan to do.

That's pretty on the right track, I already use argon for welding so I'm set for a gas to pressure test with but honestly I was thinking for what I do I would opt for leak testing via vacuum which would mean I need a micron gauge.



On the pumps, are the cheap ones functional or do you need something nicer?
 

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Vacuum is a poor choice to use for leak testing. As you don’t know if you have a leak or non-condensables being removed from the system. And if you have a leak you have no idea where it is and cannot do anything to find it with a vacuum pulled on the system.
If you braze you’ll also have to flow nitrogen or argon through the system to avoid contaminating the system with carbon.
Your new minis will need a standing pressure check of 500-600 PSI to verify a tight system.
Don’t know anything about cheap pumps. All mine are Yellow Jacket, Appion and JB.
 
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