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flushing evap. coil

i know you can flush lines for use of 410 A, but can you flush a evaporator coil that has had r22 and is rated for 410a also and then add 410a condenser.


  • John Mills_5
    John Mills_5 Member Posts: 935
    I wouldn't

    May not get it all out since there are many paths through the various distributors. If you want to change gases, I'd blow the daylights out of it with nitro and go for it. We would use a dry unit and stay 22. 
  • furnacefigher15
    furnacefigher15 Member Posts: 514
    Do it right.

    Tell the customer to bite the bullet and buy the new evap coil as well.

    You have a reputation to build and maintain. Short cuts won't help.
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