I have a canister of R22 that is about half full for my home unit. I use the superheat method for charging my unit. It’s not too hard to do. You just take the low side suction pressure and temperature. Then, using the outside temp and a chart you get another number. Do a little math and you know if your system is fully charge, over charged or under charged.
In college, my old Toyota leaked a small amount of R12. About a can (about a buck at the time) a year kept it charged. Then they put in the ban. I had my system worked on many times, but they never found the leak. I spent over $2500, and it leaked even worse than before.
I converted my Jeep over to HFC134. It wasn’t too hard. I had to completely flush the system. I used rigged up an old refrigerator compressor to pump out the system into a canister. Then I put in the new fittings and filled it up with HFC134 w/oil. It worked like a charm. This was after I installed a new compressor and evaporator/drier.
Anyway, I am glad we can buy 134 over the counter. It really sucked for those years we could not buy R12 and had no alternatives. A cheep $1 fix turned into thousands of $$$.
Off Topic » in reply to Talk to someone in the air conditioning business
I know a little bit about AC units
The whole thread (33 posts)
- When science is pushed like politics
- So you admit it then - there's no global warming!! (n/t)
- We still do not know one way or the other..
- I found the whacko who still thinks there's no global warming!
- not kidding guys
- New Little Ice Age Instead of Global Warming?
- There is evidence of Global Warming, but I have also seen evidence we may be heading for an ice age.
- Who is this "we" he mentions? There can only be one of 'em. (n/t)
- I found the whacko who still thinks there's no global warming!
- We still do not know one way or the other..
- I look at the ozone hole as the same type of pseudo-science
- re: When science is pushed like politics
- So you admit it then - there's no global warming!! (n/t)