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Air conditioning vac pump Q
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#1
 
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Air conditioning vac pump Q -
10-07-2009
, 02:56 PM
#2
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There is a WIDE range in price between the venturi style, air-compressor powered A/C vac pumps and the electric powered ones (like $30 compared to $150). Does anyone here have any experience using one of the "economy" venturi pumps with success? I don't mind buying good tools, but it would be nice to be able to save some $$ on one like this which will get very limited use. __ __ |
#3
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Don't know from vacuum pumps but couldn't you rent one? I did consider that, and it is still a possibility, but I have at |
thought having one on hand would/might save in the long run.
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Randy & \ \/ /alerie's
\__/olvos
'90 245 Estate - '93 965 Estate
"Shelby" & "Kate"
#4
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The venturi type are not really very good. I thought so, but for the price I figured I would ask. |
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If you're comfortable lashing something together, this place https://surpluscityliquidators.com/ usually has a selection of new surplus rotary compressors designed for window AC units. Thanks for the link. I will check into that. |
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Randy & \ \/ /alerie's
\__/olvos
'90 245 Estate - '93 965 Estate
"Shelby" & "Kate"
#5
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There is a WIDE range in price between the venturi style, air-compressor powered A/C vac pumps and the electric powered ones (like $30 compared to $150). Does anyone here have any experience using one of the "economy" venturi pumps with success? I don't mind buying good tools, but it would be nice to be able to save some $$ on one like this which will get very limited use. |
and like making alot of noise. They won't pull a good enough vaccum either
really for a/c work.
Motor driven type is the only way to go.
Tium..
#6
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"Randy G." <frcn (AT) DESPAMMOcncnet (DOT) com> wrote in message news:6topc5lgum0rfggsk1168n3lpb0n7k3sf9 (AT) 4ax (DOT) com... There is a WIDE range in price between the venturi style, air-compressor powered A/C vac pumps and the electric powered ones (like $30 compared to $150). Does anyone here have any experience using one of the "economy" venturi pumps with success? I don't mind buying good tools, but it would be nice to be able to save some $$ on one like this which will get very limited use. Don;t bother with the venturi ones, unless you have a VERY large compressor and like making alot of noise. They won't pull a good enough vaccum either really for a/c work. Motor driven type is the only way to go. Tium.. |
#7
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Better vacuum pumps are capable of 40 microns of mercury or less. Not sure of the specs on the ones sold by Harbor Freight tools (wwww.harborfreight.com), but they are cheap. For a regular vehicle 2.5 CFM is more than adequate. Good vacuum importance can never be over emphasized. At least 1/2 hour after reaching max vacuum, 1 hour is better. Good luck |
You won't get 40 microns without spending over $1,000 if buying new. I'd
be shocked if anything from Harbor Freight even approached 1,000
microns, but that said, I did the AC in my 740 years ago with a
diaphragm type vacuum pump that didn't even come close to that level and
it's been working fine ever since. You can never have too good a vacuum,
but a lousy one won't necessarily make the job a failure.
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