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    dongill's Avatar
    dongill Posts: 2, Reputation: 1
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    #1

    Jul 7, 2006, 09:15 PM
    Cleaning an evaporator coil?
    How do you recommend that I clean a dirty evaporator coil? I appreciate your help!
    shunned's Avatar
    shunned Posts: 268, Reputation: 20
    Full Member
     
    #2

    Jul 8, 2006, 01:49 PM
    It depends on how you can gain access to it. You could use water, rinseless coil cleaner or a vacuum. Possibly compressed air but you want to be careful that you don't bend the fins.
    drtom4444's Avatar
    drtom4444 Posts: 3,282, Reputation: 145
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    #3

    Mar 27, 2011, 05:19 PM
    On a 2 1/2 ton system or less you can wash it out after applying an alkali coil cleaner or Easy-Off oven cleaner, the type made of lye and that foams up. Use plenty of water and vacuum it up below the coil. If you were a technician you would remove the coil and pressure wash it. If the coil is more than a 2 1/2 ton coil you really need a pressure washer at 1500 psi and a fan spray tip to keep from bending fins. Don't neglect to remove blower unit and clean it as well, but remove motor from blower wheel before cleaning. This is a wet and dirty job best done by a pro. Air and brushes will never work on an AC coil. It takes a good foaming cleaner made of liquid sodium hydroxide which will remove your skin if you do not wear protective gear. DrTom4444

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