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  1. #14
    Join Date
    Jan 2009
    Location
    Nova Scotia, Canada
    Posts
    20
    Ground temperature 50F. Water I'm trying to heat 50F. Is the COP still 4?

  2. #15
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,721
    did you test and figure this out?
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  3. #16
    Join Date
    Jan 2009
    Location
    Nova Scotia, Canada
    Posts
    20

    Testing

    Hi,

    I've decided to go with the current system for this year and switch to just the electric hot water next year to see the difference. My current numbers are as follows though:

    Average cost per month (full electric bill) during heating months = $320
    Average cost per month (full electric bill) during non-heating months = $170

    I didn't subtract out the cost of everything but heat or hot water (lights, oven, stereo etc.) mainly because I can't. But if I guessed based on my last house that was oil heated I'd say it's about $80 per month. Therefore I get about $90 for hot water and $150 for heat. Do those numbers make sense to everyone with experience with these systems?

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