making an air compressor

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Forum topic by daddydave posted 07-02-2017 05:08 PM 520 views 0 times favorited 6 replies Add to Favorites Watch
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9 posts in 445 days

07-02-2017 05:08 PM

Considering in making a quiet air compressor from a refrigeration or air conditioning unit compressor motor. Lots of info out there in You Tube and know they can attain high pressure. But need to know what size to look for in order to attain at least 2 CFM for spray finishing.
Is there any info out there that can relate to CFM abilities of such units?
Thanks, Daddydave

6 replies so far

View Loren's profile


9931 posts in 3550 days

#1 posted 07-02-2017 05:09 PM

No idea, but have you tried inquiring in the
comments section on these YouTube videos?

View jonah's profile


1570 posts in 3200 days

#2 posted 07-02-2017 06:33 PM

Have you look at the California Air Tools compressors? Mine is somewhere around 58db, which is quieter than my dishwasher.

View shipwright's profile


7893 posts in 2700 days

#3 posted 07-03-2017 02:42 PM

+1 on California Air. I ditched my noisy HF last winter for one and the difference is unbelievable. You can hold a conversation right beside it while it’s running.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees.

View MrUnix's profile


6325 posts in 2101 days

#4 posted 07-03-2017 03:19 PM

I see several problems trying to re-purpose a refrigeration compressor. One big problem is that most require oil mixed in with the freon to lubricate them. You could run oil through with the air, which might be suitable for pneumatic air tools that require lubrication also, but would not work at all for spraying finishes. There are a few that use an external oil supply, but it might be cost prohibitive to find a suitable one. Then you also have to figure in the costs of the air storage tank, plumbing, pressure cut off switch, wiring and then figuring out how to mount it all in a single package. Would probably be a lot less hassle and cost to just buy a quiet compressor like the CA ones mentioned above. Keep an eye out on CL, as they do show up from time to time.


-- Brad in FL - In Dog I trust... everything else is questionable

View MrRon's profile


4627 posts in 3145 days

#5 posted 07-03-2017 03:38 PM

I too have the California Air compressor and love it. I don’t believe a compressor from a refrigerator puts out enough CFM to be an effective air compressor.

View Woodbum's profile


801 posts in 2967 days

#6 posted 07-03-2017 04:47 PM

Sorry that I can’t give you any useful information to your inquiry, but if you want a quiet compressor with good features, try one from CAT. I have the California Air Tools twin cylinder, 2 hp., twin stack compressor and love it. It is quiet, cycles quickly and they are backed by GREAT customer service. I had a minor problem with mine last winter, sent them an email and got a return email in 20 minutes solving the problem. You won’t regret getting one, as they are reasonably priced too. Good Luck, Have Fun and Work Safely!

-- "Now I'm just another old guy wearing funny clothes"

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