John's Running and Living

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household electricity

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How much electricity is used by a fridge or tv? Refrigerators have high consumption, as they keep going on and off, on and off all day and all night. Heating and cooling has by far the highest energy use in a typical house. All that is needed to determine the energy use is a timer with a second hand, a pen, paper, and basic calculations.

First unplug every appliance in the house, easiest to do the first thing in the morning. Then turn on the appliances one at a time, and time or calculate one revolution of the wheel for each appliance at the meter. Wattage of each appliance is the result of [ (3600×7.2) / seconds = watts ]. The number 7.2 is not always the same and is usually listed on the meter.

One of my goals was to convert a chest freezer to a fridge, with a digital temperature controller. Doing this has reduced that use by more than 70 percent. I don’t use any air conditioning, and use a wood stove for heating in the winters. I am planning to use bubble wrap to insulate windows this winter, and radiant barrier to keep heat in the house, which should reduce the consumption of wood. This chart was updated with 24 hour measurements when I got an energy meter from Ebay.

johnlvs2run.wordpress.com/

Update September 18, 2010
I removed the freezer, and electricity use dropped by 40 percent. The total bill was $5.93 for last month.

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One Response

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  1. Thank you very much and wish you more of Excellence

    Household ideas

    August 27, 2009 at 8:48 pm


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