This one covers using the system compressor to recover most of the liquid refrigerant before finishing the recovery with a recovery machine. This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. If you have suggestions or comments they are welcome.
If you are a homeowner looking to repair your own appliance, understand that the voltages can be lethal, the fuels are highly flammable and high pressures are used. Know your limits.

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32 thoughts on “Refrigerant recovery using the compressor

  1. Charles Cooney says:

    I used this method of recovery today, and it worked fine. I pushed 4.10.0 Lb. of R-22 in to a recovery cyl., and then hookup my recovery machine, and pulled out the vapor. In the end I removed 6.15.0 Lb. of R-22. I am not worried about the oil I pulled out because the unit is going to the scraper.

    Cc

  2. Vern Roach says:

    I love watching this guy as a refresher and as a learning tool…Always straight talking and informative… I have had the same do – hickey problem too….lol…Thanks again Furnace Man.

  3. Thanh Truong says:

    Hi Sir, if my system is overcharged, say half of a pound, can I recover the half pound using this method? Can I run my air conditioner cooling the house while I am taking some refrigerant out of the system? will it hurt the system in anyway?
    Thanks,

  4. greg s says:

    nice video! Iv'e pinched the liquid line closed with vice grips and used this method since the unit was being replaced anyway. my recovery machine went down and had no choice

  5. Jess Dallas says:

    Excuse my ignorance. ..When you open the Valve Liquid Side of the Manifold-Gauges to release refrigerant to the recovery tank. At the recovery tank; Why is that the Yellow Hose Is Connected to the Vapor Side (Blue), and Not to the Liquid Side (Red)? I don't know if I make myself sense. Thank you!

  6. Peter Darlington says:

    The name of the video should be billy bob passes half the gas while giving head drunk seriously though either he’s working over a mint life saver because he’s been drinking since lunch or he’s making a porno at the same time you decide

  7. bkoz319 says:

    does it matter if you use the red side or the blue side on the recovery tank? I have seen it done both ways and just want to know if there is a correct way?

  8. TroniX FiX says:

    What would happen if you close the valve of the high pressure side so that it sucks everything from the low pressure side and creates vacuum till the compressor? Wouldn’t that increase the pressure on the high pressure service valve and push almost all the stuff out?

  9. Law & Order says:

    One crucial point before putting recovery machine don’t forget to close high side of the gauge and cylinder to suck the remaining refrigerant in pipe by opening the low side of the gauges then connect the recovery machine in order to avoid any venting gas to atmosphere.

  10. James Duffey says:

    You should of had the tank upside down for a while at first then when vapor starts coming in the tank you flip it back up right and then you won't get much flash vapor from it being upside down the whole time. And you get as much liquid as you can which is more dense and you get it out faster

  11. James Duffey says:

    You can do the same on big coolers that have multiple stages and compressors when say stage 2 in low and 1 or 3 is a little high on gas then you hook the highline on the high stage to the low side on the low gas stage and pass it over using just the 2 compressors running

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