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

    Aug 17, 2009, 05:18 AM
    Cost effectiveness of using 220v vs 110v for an air conditioner
    Is it much more cost effective to use 220v on a portable air conditioner for a small room vs using 110v:confused:
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Aug 17, 2009, 05:39 AM
    Assuming the same BTU rating between a 240 volt and a 120 volt AC unit, there will be no or negligible difference in energy costs.

    Using 240 volts over 120 volts, for any device that draws the same power, does not help save power.

    I believe you need to refer to the Energy Star SEER rating to find the lowest rating to compare units for energy costs.

    I will copy this over at HVAC forum, to see if any of the HVAC experts can help with choosing a unit.
    dac122's Avatar
    dac122 Posts: 463, Reputation: 17
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    #3

    Aug 17, 2009, 06:46 AM

    No. Just make sure the circuit can handle whatever you're plugging in.

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