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Mixing 407C and R22
So I am at the parts house chatting with other techs about the price R22 and I come to find out that there are some techs that are no longer buying R22 and just adding 407C
to R22 systems that are low on charged. I am told that it is "ok" to mix the two.
To me, this is an unacceptable practice. Anyone have any thoughts on the matter?
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Nest is POO!!
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There are still people who think that it was OK to mix some of the various R-12 replacement gasses.
It has never been acceptable to field-mix refrigerants except under very tightly controlled circumstances. Those circumstances are typically found in ultra-low temp and biomedical stuff, not Joe Homeowner's back yard.
Just don't.
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Let us know how that works out with mineral oil.
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As long as it is a package unit with undersized piping and no receiver . . .
Originally Posted by
VTP99
Let us know how that works out with mineral oil.
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Originally Posted by
BBeerme
As long as it is a package unit with undersized piping and no receiver . . .
Do package units come undersized piped as an option ?
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Don't think you get the choice.
Originally Posted by
VTP99
Do package units come undersized piped as an option ?
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I was told mixing gazes is a big no no, is this true
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Originally Posted by
jklein20980
I was told mixing gazes is a big no no, is this true
is this a trick question?
Nest is POO!!
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i have always been under the impression that it was a fineable offense if you get caught
if corny was a part on a washing machine,,, he'd be the agitator
“Those who CAST the votes decide nothing; those who COUNT the votes decide everything.” – Stalin even evil men say things worth paying attention to
A Nation of Sheep - Breeds a Government of Wolves
Gangster Al Capone once remarked that anyone who can walk to the welfare office can walk to work.
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In my area a lot of techs doing are doing it. Some are mixing R422D with 22.
This sets the senario for a unit that has been serviced by multiple techs
to have a mixture of R22,R407C and R422D.
Some of the counter guys at the supply houses are telling people its ok to mix them. I even heard one "tech" saying R407C cools better if you charge
it in vapor.
I have given up trying to explain why you should not mix refrigerants.
It's sad.
I miss you mom and dad.
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Of corse not
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i'm thinking one of those refrigerant identifiers may be worth the money
if corny was a part on a washing machine,,, he'd be the agitator
“Those who CAST the votes decide nothing; those who COUNT the votes decide everything.” – Stalin even evil men say things worth paying attention to
A Nation of Sheep - Breeds a Government of Wolves
Gangster Al Capone once remarked that anyone who can walk to the welfare office can walk to work.
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You are creating a new and untested refrigerant. So not only is it frowned upon. I'd guess its against the law somewhere.
I like DIY'ers. They pay better to fix.
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Well yeah, but, if you call it new AND improved, you can charge more for it. 
Originally Posted by
bmathews
You are creating a new and untested refrigerant. So not only is it frowned upon. I'd guess its against the law somewhere.
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Very bad idea to mix refrigerant
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That is exactly what I was told.... it is ok if you charge in vapor. I still think this is unacceptable. I would never mix refrigerants just to save $$$.
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Never mix. I would be fired if my boss knew i was mixing refrigerants.
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mix drinks... not refrigerants...
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