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    oonnunny's Avatar
    oonnunny Posts: 3, Reputation: 1
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    #1

    Sep 24, 2010, 05:49 AM
    CanIreplace outside unit R22 with r410without changingtheinside evaporotor coil
    Can I replace outside unit R22 with r410 without changing the inside evaporotor coil?
    oonnunny's Avatar
    oonnunny Posts: 3, Reputation: 1
    New Member
    		  
    #2

    Sep 24, 2010, 05:50 AM

    Can I replace outside unit R22 with r410 without changing the inside evaporotor coil
    oonnunny's Avatar
    oonnunny Posts: 3, Reputation: 1
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    #3

    Sep 24, 2010, 05:56 AM
    QUOTE=oonnunny;2536574]We have an old unit with R22. Would like to change the R22 with R410, only the outside unit. Do we have to replace the whole inside evaporator coil
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    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Sep 24, 2010, 10:35 PM

    Replace both the inside and outside units along with a new line set that connects them together. There are many different reasons for this so if you really need to know the reasons look around on this board and on the net. Pressure differential,different oil types are just two of the items. Larger indoor coil size is another.
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