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Thread: hp80 or 404a ?

  1. #1
    Join Date
    Jan 2002
    Posts
    1,895
    Freezer application is one better than the other ? Have picked up a few customers that have had hp80 conversions done none of them are real close to the shop or a supply house. Yesterday after changing a evap fan motor found one slightly low on gas due to a leaking acuumulator, geting changed monday convert to 404a (carry that on the vans) or start carrying another jug around ?

  2. #2
    Join Date
    Jan 2004
    Location
    Earth
    Posts
    4,879
    I like 404.
    A Diamond is just a piece of coal, that made good under pressure!

  3. #3
    Join Date
    Jul 2001
    Location
    Gold Coast of Connecticut
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    4,583
    You have to have 95%poe oil for R-404, it runs a lower head than the HP-80.

  4. #4
    Join Date
    Jul 2000
    Location
    Guayaquil EC
    Posts
    10,366
    I've had good luck with HP80 for conversion of existing R502 systems and will generally maintain the HP80 until the whole condensing unit gets changed out. Then I'll switch to R404A. At this rate, it'll be a long time before they're all on R404A though.....so I carry both on the truck all the time.

    I deal mainly light commercial where most units are hermetics and therefore its not practical to be doing the multiple oil changes required for a MO to POE oil conversion.

  5. #5
    Join Date
    Jan 2002
    Posts
    1,895
    Should have mentioned this one had a new condensing unit and evap done at the same time it was swapped to hp80 and has poe oil in it. We use 408a as the step between no complaints with it or hp80 just trying to cut down on cans in the van.

  6. #6
    Join Date
    Sep 2001
    Location
    East Stroudsburg, PA
    Posts
    13,215
    Go with 404a.

    Change the oil, don't be a pussy.

  7. #7
    Join Date
    Oct 2001
    Location
    Stoney Creek, Ontario
    Posts
    884
    Stay away from the HP80, will only cause you grief on hot summer days, HP62 works much better

  8. #8
    Join Date
    Nov 2003
    Location
    Olympia, WA
    Posts
    47
    I've noticed this too Shaun66
    Believe the problem is simple. Provided the system doesn't leak.
    HP-80 (402a) has Propane in it. Which we all know will move oil very well. Take that fact and apply it to the amount of oil which is in the evap. Over time more and more oil end up there and doesn't come back. All the systems I've seen changed from 502 to 402A now have more oil than what they started with. And all the ones I've done had to have a little more refrigerant added to them on that very hot day.
    So like I said.. Believe the problem is accually a good thing in the long run. It will keep more of the oil out of the evap.

    I've tried out the new One-Shot which does exactly the same thing. Good thing about one-shot is its an HFC.

  9. #9
    Join Date
    Jul 2004
    Location
    Sarnia, ON
    Posts
    1

    "One-Shot"

    If by "One-Shot" you're referring to the R-12 replacement product by Icor that is listed as R-414B, then I've had excellent success with it for the past 4 years. I tend to use 414-B for TX applications, and R-409A (Forane) for cap tubes.

    Regards...Vince

  10. #10
    Join Date
    Nov 2003
    Location
    Olympia, WA
    Posts
    47
    No its a new product ICOR came out with for high pressure low-temps. HFC instead of HCFC like Hot-Shot.

    Have a 502 mineral oil box running with it for the last 2months. No problems yet.

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