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    trinadad692000's Avatar
    trinadad692000 Posts: 1, Reputation: 1
    New Member
     
    #1

    Jun 8, 2012, 03:51 PM
    r410a vs r22 oil
    Im changing out a evaporator coil that had a rusted drain pan. It's a R-22 unit 3.5 ton. I just read the box and it says it's a R410 coil. Can I still use it for the R-22 system. I guess the only difference is it is made to with stand more pressure than R- 22 produces, I can not think of anything else.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Jun 8, 2012, 04:58 PM
    Quote Originally Posted by trinadad692000 View Post
    Im changing out a evaporator coil that had a rusted drain pan. Its a R-22 unit 3.5 ton. I just read the box and it says its a R410 coil. Can I still use it for the R-22 system. I guess the only difference is it is made to with stand more pressure than R- 22 produces, I can not think of anything else.
    As long as the coil is the same size or larger than the original one you should be fine as long as you use the correct type and size of expansion device for the outside unit. Expansion valve or flow rater needs to be for R-22 and sized for the outside unit.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
     
    #3

    Jun 8, 2012, 05:28 PM
    I agree 100% with hvac1000. Many new coils are compatible with 22 or 410 as long as the metering device is taken into consideration.

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