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  1. #21
    Veteran Member foggy1111's Avatar
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    Dec 2008
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    Nisswa, MN
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    JD 3320 eHydro w/ 300CX Loader

    Default Re: New Home - Recirculating Hot Water

    Quote Originally Posted by sdkubota View Post
    I am still doubtfull about any valve working as there is zero pressure differential or in other words nothing to make the valve open and close. Perhaps even without any swing valve the cooler water would settle in the return line and head back towards the water heater. Perhaps this does work but many times what people think does not meet scientific reality. I would like to know why this isn't common knowledge in the plumbing industry as you have an almost perpetual motion machine.
    It's not a perpetual motion machine. You do need to put something into it to get something out.....and that something is hot water. Heat rises / cold drops....and when designed correctly....this is what makes this system work so well. It takes full advantage of physics to get the job done. The valve just prevents accidental back-flow....as I understand it. Seems to me like lotsa bang for the buck....therefore I got it planned into my construction.

    I currently have a shower that takes 5 minutes to get hot water.....arrrrgh! THis loop set-up seems like the real deal to me.
    3320 eHydro, 300CX Loader & 15 + great attachments

    You gotta mine allot of dirt to find a diamond.

  2. #22
    Gold Member
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    Feb 2005
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    NorthEastern VT
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    Kubota 3430

    Default

    Nice idea, the thermocycle!

    My water heater is in the basement. I don't have 5 vertical feet for the cooling leg. Can I make this work with a coil of uninsulated line just above the water heater?
    Kubota 3430HST ,Woods 1009 with skidsteer QC,Scraper, Brush mower , Woods 7' hoe, homebrew 7' FEL QC fisher plow with hydraulics, etc
    99 QCSB4x4 Cummins Ram (with some hp toys but now a Vermont rust bucket)

  3. #23
    Super Member
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    Mar 2008
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    Northern Fingerlakes region of NY, USA
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    Kubota L3830GST, B7500HST, BX2660

    Default Re: New Home - Recirculating Hot Water

    Quote Originally Posted by DavidVT View Post
    Nice idea, the thermocycle!
    My water heater is in the basement. I don't have 5 vertical feet for the cooling leg. Can I make this work with a coil of uninsulated line just above the water heater?
    How much space do you have? I would guess that it would work with less, but the furnace guy was insistent that it be vertical to build up "head" and open the check valve.

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  4. #24
    GGB
    GGB is offline
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    Aug 2010
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    Kansas
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    John Deere 2210, John Deere Z820A, John Deere 345

    Default Re: New Home - Recirculating Hot Water

    Our old house had recirulating hot water on every faucet and shower. Very nice! When we moved, our new place didn't have this, and our master bedroom was the fartest faucets from the water heaters, while our other faucets were very close or directly above the water heaters. It didn't take us very long to call our plumber to have him add a return line for the master bedroom bathroom. It was well worth the money-my bride is happy, and given the price of water these days, it also saves every month on the water bill.

    For new construction, I wouldn't expect it to add very much to the total plumbing bill. This should be routine for an experienced plumber. You will save money every month on the water bill, and if you ever sell the house, it may even give your home an edge on the market.

    GGB
    GGB

    "We have met the enemy and he is us." -Pogo/Walt Kelly

  5. #25
    Platinum Member
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    Aug 2012
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    Location
    Hartford, SD
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    Kubota L3400F

    Default Re: New Home - Recirculating Hot Water

    What you save in water you will more then pay in constantly heating your water lines because of the returm lines. Not saying it is a bad thing but is putting additional demands on the water heater. I pay a few dollars for every additional 1,000 gallons of water.

  6. #26
    Gold Member
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    Jan 2011
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    Location
    Central, OK
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    jd 1050 LS I3040H. CASE SC

    Default Re: New Home - Recirculating Hot Water

    The savings or additional operational costs would depend on your use and schedule. When there is no use for extended periods then there would be wasted engery from the hot supply and return lines. When it gets used several time during the day then the wasted water and amount of cold water introduced to the heater (requiring it to be heated) each time would offset the standby losses. The better the insulation on the piping the less the standby loss. For the limited use periods it may be more cost effective to install the circulating pump on a timer. I have seen locations that typically only use the hot water in the morning and they have a switch to activate the circulation pump for a few minutes on an as needed basis.
    LS I3040H w/ loader
    JD 1050 w/ loader and backhoe
    Case SC. 1952

  7. #27
    Veteran Member foggy1111's Avatar
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    Nisswa, MN
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    JD 3320 eHydro w/ 300CX Loader

    Default Re: New Home - Recirculating Hot Water

    ^More good information in the posts above. Definately going with the recirculating system and have a few more questions to ask of a plumber.....but it sounds like he is qualified to do the job right. Looking forward to a nifty set up. Thanks for all the input! It really helps make a sound decision.
    3320 eHydro, 300CX Loader & 15 + great attachments

    You gotta mine allot of dirt to find a diamond.

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