Somebody posted one recently. I kind of think it was stump digger who posted it.

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It was @stumpdigger who posted it and the pump he mentioned was a Viot.
For $150 it looks worth a try to me.
https://www.viot.us/shop.php?model=VPD2

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Here’s a Navac that’s 24#
$258

https://www.trutechtools.com/navac-np4dp-dual-stage-4cfm-vacuum-pump.html

Or this CPS
Lighter 18# and cheaper, $227

https://www.trutechtools.com/CPS-VP2D-Premium-Series-Vacuum-Pump-2-CFM-Two-Stage_p_5546.html


Use the code HVACBS to save another 8% on either


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On the NAVAC in the description it says twin cylinder. Is it not a vane pump?

 

I have a Yello jacket YJII as a backup pump.
It's 4 cfm I think......
Anyway, it's from China, it's cheap and it works. It's also pretty light.
I Don't use it much, I prefer my jb. But if I gotta haul my stuff up several ladders then the little yj is what's coming with me

 

A friend of mine have a small Robinair, we installed a couple of small 2 tons unit together, we pulled the vacuum with this little one, i really liked seem reliable and fast, also 2 stages.

Take a look https://www.robinair.com/products/vacumaster-5-cfm-vacuum-pump

 

A light weight, vac pump . the Viot one has to be the one . Other than the battery Navac , all the others are heavy ..

 

Uniweld has a 1.5 cfm 10 pounder

 

Harbor freight sells this jewel. Probably less than a pound.

Saw a guy on YouTube say he used it to work on small ACs then instead of buy a real pump he used an ac compressor as a vacuum pump...wow [emoji23]

 

My father in law used to make vacuum pumps out of window units back years ago. I don’t remember which compressor worked the best, rotary or piston

 

Back in the 80s I remember a lot of guys would use carbonation pumps as vac pumps.

Some guys had some really oddball stuff out there.

The first two companies I worked for did not have a vacuum pump. At my second job I started doing side work and purchased a vacuum pump at a pawn shop. Brand new pump.. forget the brand.. but it was stolen..I think from a local supply house.. lol

 

checkout the Autogen on Amazon and for $30 more you get a 4 yr extended warranty. I bought one for a backup to my old Yellow Jacket and on mini splits I use the Autogen.. pulls them down quickly below 50.. nice pump

 

Get a lightweight 3 or 4 CFM with 1/2” diameter hoses, and always use VCRT’s. If it’s CoreMax cores, use a 90° VCDT or remove the cores from the CoreMax, and use a swivel tee for regular valve core availability.
You’ll never look back.


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