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Time of Day Meter (TOD)

ibro87ibro87 Member Posts: 1
Hi- currently I have an all electric car as well as in floor heating. My electric bill for a 800 sq home is nearly $400/mo. At least 80% is contributed by the actual heating. The heat type is hydronic radiant with an ELECTRIC furnace. Looking at my Nest app the boiler also runs about 80% overnight. I am thinking about switching to a time of day meter which has a rate of 1/2 normal pricing. Off peak is 9pm to 9am and all day on Weekends. I would charge my car at night and also turn up the heat at night then turn it down in the morning so it would not cycle much since the slab does hold heat. Any thoughts on TOD meter and radiant heat?
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Comments

  • Jamie HallJamie Hall Member Posts: 9,383
    This is true radiant -- that is, tubing buried in the slab? That has very long lag times, so that your strategy will probably reduce your bill (electric heat does cost...) but not reduce your comfort that much.
    Jamie



    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.



    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • GroundUpGroundUp Member Posts: 372
    edited January 6
    Often, true "off peak" units will have a plethora of thermal storage whether it be a stone lined internal storage in the boiler or an external water or masonry storage to be used during peak hours. Storing heat in the thermal mass of the slab is great and all, but that also means very poor temperature regulation in the space. The flywheel created by this type of storage often results in a hot house at 9 AM and a cold house at 9 PM and would usually save very little in terms of energy usage while also being uncomfortable
  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 4,739
    A simple time clock will do the job. It won't cost much to install and may save fuel but comfort may suffer.
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