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How much refrigerant is in a can? #4771400
05/29/18 05:07 PM
05/29/18 05:07 PM
Joined: Mar 2013
Posts: 840
NY
joegreen Offline OP
joegreen  Offline OP
Joined: Mar 2013
Posts: 840
NY
So i am in the process of buying refrigerant to fill my vehicle. It seems like an easy enough question but i couldnt find any info online. Lets say i have a can of r134a and it says net weight 12oz. Does that mean the can contains 12oz of refrigerant or does the can and refrigerant weight 12oz? Im just trying to figure out how many cans of r134a i need.

Last edited by joegreen; 05/29/18 05:08 PM.

1978 Chevrolet k20
Engine: Delo 10w30xle
Transmission: Castrol transmax dex/merc

1984 Mercedes-Benz 300 turbo diesel
Engine: Delo 400 15w40le
Re: How much refrigerant is in a can? [Re: joegreen] #4771401
05/29/18 05:09 PM
05/29/18 05:09 PM
Joined: Dec 2005
Posts: 10,035
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 10,035
Upper Midwest
Originally Posted By: joegreen
So i am in the process of buying refrigerant to fill my vehicle. It seems like an easy enough question but i couldnt find any info online. Lets say i have a can of r134a and it says net weight 12oz. Does that mean the can contains 12oz of refrigerant or does the can and refrigerant weight 12oz? Im just trying to figure out how many cans of r134a i need.

http://www.businessdictionary.com/definition/net-weight.html


1994 BMW 530i, 231K
1996 Honda Accord, 263K
1999 Toyota Sienna, 402K
2000 Toyota ECHO, 272K
Re: How much refrigerant is in a can? [Re: joegreen] #4771414
05/29/18 05:22 PM
05/29/18 05:22 PM
Joined: Dec 2006
Posts: 8,397
Illinois
mrsilv04 Offline
mrsilv04  Offline
Joined: Dec 2006
Posts: 8,397
Illinois
You have to read the can. Some will have a small amount of oil in them as well.

I have a 12 ounce can in the garage, which is labelled as containing 11.3 ounces of R-134a, and .7 ounces of refrigerant oil.


2004 Silverado - on its 3rd Jasper engine in less than one year.
Re: How much refrigerant is in a can? [Re: joegreen] #4771415
05/29/18 05:23 PM
05/29/18 05:23 PM
Joined: Mar 2017
Posts: 596
West Ma.
rollinpete Offline
rollinpete  Offline
Joined: Mar 2017
Posts: 596
West Ma.
Usually under the hood some where, it will tell you how much you need, for your system.
Got to go from there.


Pete.
97 Ford Expl.Sport 4.0 ohv 4wd 5spddrive185k miles
Last Change;
50/50 QSUD, QSHM. 5w30
Fram xg8a, Fram CA8141

Currently under the influence of oil shocked2

Re: How much refrigerant is in a can? [Re: joegreen] #4771428
05/29/18 05:42 PM
05/29/18 05:42 PM
Joined: Mar 2008
Posts: 7,026
USA
slacktide_bitog Online content
slacktide_bitog  Online Content
Joined: Mar 2008
Posts: 7,026
USA
"net weight" is the weight of just the contents inside the can smile

"tare weight" is the weight of the container itself, and "gross weight" is the "net"and "tare" weights

Re: How much refrigerant is in a can? [Re: rollinpete] #4771589
05/29/18 08:00 PM
05/29/18 08:00 PM
Joined: Mar 2013
Posts: 840
NY
joegreen Offline OP
joegreen  Offline OP
Joined: Mar 2013
Posts: 840
NY
Originally Posted By: rollinpete
Usually under the hood some where, it will tell you how much you need, for your system.
Got to go from there.
I need 1lb 14oz. Im just trying to figure out how many cans i need to buy is all


1978 Chevrolet k20
Engine: Delo 10w30xle
Transmission: Castrol transmax dex/merc

1984 Mercedes-Benz 300 turbo diesel
Engine: Delo 400 15w40le
Re: How much refrigerant is in a can? [Re: kschachn] #4771591
05/29/18 08:02 PM
05/29/18 08:02 PM
Joined: Mar 2013
Posts: 840
NY
joegreen Offline OP
joegreen  Offline OP
Joined: Mar 2013
Posts: 840
NY
Originally Posted By: kschachn
Originally Posted By: joegreen
So i am in the process of buying refrigerant to fill my vehicle. It seems like an easy enough question but i couldnt find any info online. Lets say i have a can of r134a and it says net weight 12oz. Does that mean the can contains 12oz of refrigerant or does the can and refrigerant weight 12oz? Im just trying to figure out how many cans of r134a i need.

http://www.businessdictionary.com/definition/net-weight.html
Thanks i understand now


1978 Chevrolet k20
Engine: Delo 10w30xle
Transmission: Castrol transmax dex/merc

1984 Mercedes-Benz 300 turbo diesel
Engine: Delo 400 15w40le
Re: How much refrigerant is in a can? [Re: slacktide_bitog] #4771593
05/29/18 08:02 PM
05/29/18 08:02 PM
Joined: Mar 2013
Posts: 840
NY
joegreen Offline OP
joegreen  Offline OP
Joined: Mar 2013
Posts: 840
NY
Originally Posted By: slacktide_bitog
"net weight" is the weight of just the contents inside the can smile

"tare weight" is the weight of the container itself, and "gross weight" is the "net"and "tare" weights
Thanks


1978 Chevrolet k20
Engine: Delo 10w30xle
Transmission: Castrol transmax dex/merc

1984 Mercedes-Benz 300 turbo diesel
Engine: Delo 400 15w40le
Re: How much refrigerant is in a can? [Re: joegreen] #4771594
05/29/18 08:02 PM
05/29/18 08:02 PM
Joined: Mar 2013
Posts: 840
NY
joegreen Offline OP
joegreen  Offline OP
Joined: Mar 2013
Posts: 840
NY
Looks like ill get 3 cans and put 2.5 cans in.

Last edited by joegreen; 05/29/18 08:03 PM.

1978 Chevrolet k20
Engine: Delo 10w30xle
Transmission: Castrol transmax dex/merc

1984 Mercedes-Benz 300 turbo diesel
Engine: Delo 400 15w40le
Re: How much refrigerant is in a can? [Re: joegreen] #4771650
05/29/18 08:39 PM
05/29/18 08:39 PM
Joined: Jun 2009
Posts: 3,719
Chicago, IL
tomcat27 Offline
tomcat27  Offline
Joined: Jun 2009
Posts: 3,719
Chicago, IL
Is your system totally empty and do you have a vacuum pump?


2019 Cherokee, 2015 Rogue, 2014 Sentra, 2001 Camry, 2005 Starcraft, 1998 Dodge B1500
1996 Sebring Jx, 1984 F150, 1970 Cougar, 2013 XT250, 2010 Vstar, 2014 CTX1300
Re: How much refrigerant is in a can? [Re: joegreen] #4771752
05/29/18 10:09 PM
05/29/18 10:09 PM
Joined: Dec 2016
Posts: 6,477
Waco, TX
Linctex Online content
Linctex  Online Content
Joined: Dec 2016
Posts: 6,477
Waco, TX
There's usually enough reserve in the accumulator to handle that last 1/2 a can


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: How much refrigerant is in a can? [Re: joegreen] #4771754
05/29/18 10:12 PM
05/29/18 10:12 PM
Joined: May 2010
Posts: 9,191
North Carolina
spasm3 Online content
spasm3  Online Content
Joined: May 2010
Posts: 9,191
North Carolina
It seems to me that the old r12 system worked well even when undercharged or overcharged a bit. It seems to me that with the r134a systems , there is a fine line between undercharged and overcharged.


13 elantra 70k 5w30 QSUD
03 chevy avalanche79k synpwr 10w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 5600 miles m1 0w30
Re: How much refrigerant is in a can? [Re: tomcat27] #4778394
06/05/18 05:28 PM
06/05/18 05:28 PM
Joined: Mar 2013
Posts: 840
NY
joegreen Offline OP
joegreen  Offline OP
Joined: Mar 2013
Posts: 840
NY
Originally Posted By: tomcat27
Is your system totally empty and do you have a vacuum pump?
Yes the system is totally empty. I have a gauge set and a vacuum pump. Anyway the a/c is all repaired now. thanks


1978 Chevrolet k20
Engine: Delo 10w30xle
Transmission: Castrol transmax dex/merc

1984 Mercedes-Benz 300 turbo diesel
Engine: Delo 400 15w40le
Re: How much refrigerant is in a can? [Re: spasm3] #4778446
06/05/18 06:29 PM
06/05/18 06:29 PM
Joined: Jan 2004
Posts: 4,248
California
nthach Offline
nthach  Offline
Joined: Jan 2004
Posts: 4,248
California
Originally Posted By: spasm3
It seems to me that the old r12 system worked well even when undercharged or overcharged a bit. It seems to me that with the r134a systems , there is a fine line between undercharged and overcharged.

Depends on the system as well, new AC systems are very sensitive to oil and refrigerant charge. That old GM accumulator and orifice tube system can tolerate some overcharge.

If you charged in with all 3 cans, I don't think an extra 5 oz of R-134a will hurt anything. You lost some while changing out cans, purging the charging hose and gauges.


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