Post a reply to the thread: 407C on top of R-22
You may choose an icon for your message from this list
Please enter the name by which you would like to log-in and be known on this site.
Please enter a password for your user account. Note that passwords are case-sensitive.
Please enter a valid email address for yourself.
Will turn www.example.com into [URL]http://www.example.com[/URL].
Originally Posted by AIRCON8 The counter guy at Goodman today told me he don't know what NATE is. At the beginning i tough he was joking, then a couple of other guys join the conversation, he was not joking...Welcome to Florida. LOL There are some techs that have been in the field many years and don't know what nate is either. There are some sharp counter men and some you want to avoid.
Originally Posted by SkullMonkey The counter guy was most likely repeating what he heard from some of the guys buying 407C, in his mind he may have thought that he was passing on useful info to other customers. We as contractors or techs need to filter out erroneous technical info we are given be it from a counterman, manufacturer, fellow tech or even boss. I would not have taken offense at the counterman being misinformed, I would have been more irked if he tried to convince me to use a leak sealer. I may have told him to be careful because what he was recommending was against the law and left it at that. The counter guy at Goodman today told me he don't know what NATE is. At the beginning i tough he was joking, then a couple of other guys join the conversation, he was not joking...Welcome to Florida. LOL
The counter guy was most likely repeating what he heard from some of the guys buying 407C, in his mind he may have thought that he was passing on useful info to other customers. We as contractors or techs need to filter out erroneous technical info we are given be it from a counterman, manufacturer, fellow tech or even boss. I would not have taken offense at the counterman being misinformed, I would have been more irked if he tried to convince me to use a leak sealer. I may have told him to be careful because what he was recommending was against the law and left it at that.
Originally Posted by AIRCON8 Remove the 22 do a new charge with 407 and put a sticker on the side of condenser saying R407C Yep. Of course. That's what me and my guys have been doing. I have since talked to the branch manager about the "information" his counter help is giving out...
Originally Posted by AIRCON8 Remove the 22 do a new charge with 407 and put a sticker on the side of condenser saying R407C Might want to put some POE oil in there...….at the least SUPCO 88!
Remove the 22 do a new charge with 407 and put a sticker on the side of condenser saying R407C
Originally Posted by Pepe The Frog One of the fellas at the parts house was trying to convince me that 407C on top of R-22 was a good idea. We've been recovering all the 22, making necessary repairs and then replacing with 407. Has anyone heard of people putting 407 on top of 22? ...on that note I was getting some odd fluctuating pressure readings on a unit but the line temps remained the close to the same. Oh, and the system was cooling.... Anyone have any thoughts? I have definitely seen it done in the past but just like stated before it's illegal and although it will work it causes too many problems. If you watch your gauges after it's been added you will see a crazy fluctuation almost like a TXV hunting but way more erratic. It just simply should not be done
Rs44b... Sent from my LG-G710 using Tapatalk
Pepe be careful, R407 is not miscible with mineral oil, therefore, if you have it ... no more lubrication after R22 disappears
Mixing is lazy, just like bypassing certain components.
ive found this summer that fluctuating pressures happen when combining the two together. When recovering then replacing its fine but a vacuum (full) is usually required to actually make it work the way its supposed too. We always recover then replace. saves problems it seems.
Not only is it illegal, once you make your own personal blend...you now have no idea what the pressure-temperature relationship is. Which means, if your one of those technicians that is actually concerned about subcooling and superheat, it will be impossible to measure it.
Originally Posted by Scoobie I’ve heard it works fine. Agin the rules...but will work. It might WORK fine but then someone comes along and recovers that mess and get hit with a disposal fee because some a$$ wipe mixed refrigerants!
I’ve heard it works fine. Agin the rules...but will work.
Originally Posted by ga-hvac-tech While the performance profile of 22 and 407C are very close together (the latter has a glide, the former does not)... Mixing juices is NOT a good idea... not to mention it is illegal. Hey Pepe... are you in the HVAC/R business??? If so... you have enough posts... Apply for PRO status... You will like what is behind the PRO door! Yes. I am in the business. Thank you for the tip. I will look into applying for PRO status. T
Originally Posted by Pepe The Frog One of the counter guys. Believe it or not. He's been there for almost thirty years. that's why he is on the counter. selling shit
Originally Posted by Pepe The Frog One of the fellas at the parts house was trying to convince me that 407C on top of R-22 was a good idea. We've been recovering all the 22, making necessary repairs and then replacing with 407. Has anyone heard of people putting 407 on top of 22? ...on that note I was getting some odd fluctuating pressure readings on a unit but the line temps remained the close to the same. Oh, and the system was cooling.... Anyone have any thoughts? While the performance profile of 22 and 407C are very close together (the latter has a glide, the former does not)... Mixing juices is NOT a good idea... not to mention it is illegal. Hey Pepe... are you in the HVAC/R business??? If so... you have enough posts... Apply for PRO status... You will like what is behind the PRO door!
Originally Posted by CEAS-AC-TECH Seen it done. Bad idea and as stated illegal. Itll cool until it gets into the 90s out. Then youll be chasing ghost. Sent from my LG-G710 using Tapatalk The company that was out before us did this...(How do I know?) my tech and the other tech know each other... And yup...it was just around 90 degrees, which must be why it "appeared" to be "working"..... Anyway, to make a long story short...we never drop in refrigerants....Or else they better not. Let's put it that way.
Originally Posted by VTP99 " One of the fellas at the parts house " So the counter guy or a customer ? One of the counter guys. Believe it or not. He's been there for almost thirty years.
Been there done that during the R-12 phase out. Same BS different decade!
Forum Rules
