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Water waste

Discussion in 'General Discussions' started by DAKA, Nov 16, 2015.

  1. DAKA

    DAKA DOING VERY NICELY, THANK YOU

    I can't be the only person who hates to see how much water is wasted waiting for it to get hot at the faucet/ shower etc.
    I'm a retired (over 25 years ago) architect so there was no real choice as to how to get hot water other than a large gas or electric unit probably in the basement'
    Now with the advent of instant water heaters, no storing and keeping a tank hot, I think it makes sense to pipe only one cold pipe through the whole house and have a small electric unit under each sink....any comments?
     
  2. omega

    omega Very Tilted

    What is the short and long term cost? Short term I don't think I could afford to have those installed. Three full baths and one half bath. Plus a kitchen sink. And laundry.
     
  3. fflowley

    fflowley Don't just do something, stand there!

    In my home the kitchen sink and the master BR are fairly close to the existing hot water tank so we don't wait very long.
    In the other shower though I think this would be awesome to have. Just not sure where it would fit.
     
  4. Charlatan

    Charlatan sous les pavés, la plage

    Location:
    Temasek
    In Asia, the norm is to have a smaller hot water tank that is turned on and off as it is needed. When I first moved here, I was always pissed that we were running out of hot water (I was sharing a flat) until I discovered the magic of the hot water switch.

    I had been hoping to install inline heating in my Toronto house before we sold it. Many of the places in I've stayed in in London and Cannes have inline heating and it's quite efficient.

    I would imagine the initial cost of installation would be something to consider, but I was planning on doing this when my aging water tank finally died.
     
    • Like Like x 1
  5. DAKA

    DAKA DOING VERY NICELY, THANK YOU

    IIRC a small undersink 110 V plug in unit was not outrageously expensive..
     
  6. Lindy

    Lindy Moderator Staff Member

    Location:
    Nebraska
    When my dad redid the upstairs plumbing in our old farmhouse he put a small - maybe about 3 gallon - electric water heater under the lavatory sinks and then ran that to the sinks and shower. So the water only had to run a few feet. For all practical purposes, instant hot water.

    The trick is to supply the little undersink tank from the main hot water line instead of the cold line. Then by the time the little tank runs out of hot it has been replenished with hot from the basement, so a small tank is all you need.
    Also, your hot water is mostly heated more cheaply by the much more efficient gas water heater in the basement.
     
  7. Charlatan

    Charlatan sous les pavés, la plage

    Location:
    Temasek
    You would probably save more water by making sure your showers and toilets are all low flow.
     
    • Like Like x 2
  8. Lindy

    Lindy Moderator Staff Member

    Location:
    Nebraska

    Low flow toilets are great. We put in two of them a couple of years ago. A flush is .4 to 1.6 gallons, depending on how long you hold the lever down. We decided not to replace the old one in the basement that probably only gets used a few times a month.

    I hate low flow showers, and won't have one.
     
  9. Charlatan

    Charlatan sous les pavés, la plage

    Location:
    Temasek
    I am with you on the low flow showers. We had one for a short while when I was a kid. It sucked.
     
  10. ASU2003

    ASU2003 Very Tilted

    Location:
    Where ever I roam
    Once my water heater dies, it is getting replaced by an instant on one. I hardly use any hot water, so I am more upset at the waste of gas to heat the tank than the 1 minute of water that it takes to get hot. And the size would make a lot more sense with where I have to install it at.

    They have sail boat electric hot water heaters that might be small enough to install in an existing bathroom. Or make sure the pipe going to the bathroom is insulated, even if it is and interior one.

    If I lived in the desert southwest, I would be getting a solar thermal system. I'm surprised you don't see more of those.
     
  11. Charlatan

    Charlatan sous les pavés, la plage

    Location:
    Temasek
    Here is my water tank and the switch.

    Very different from the size and the thermostat driven hot water tank that we used in Toronto.

    IMG_1080.JPG IMG_1081.JPG
     

    Attached Files:

  12. snowy

    snowy so kawaii Staff Member

    Toilets are a huge culprit for water waste in the home, and they're relatively easy to replace.

    Low-flow showers are okay depending on the fixture you choose and on existing water pressure. We have one that came with our apartment, and I like it fine, probably because the pressure is acceptable.

    Another place people unwittingly waste water is in rinsing their dishes. Dishes need only be scraped before going in the dishwasher. Hey, America: Stop Prewashing Your Dishes - Reviewed.com Dishwashers Don't Clean Dishes Before Putting them in the Dishwasher Why You Shouldn't Pre-Wash Dishes - Dishwasher Is Better Than Handwashing Stop pre-rinsing and let the dishwasher do its job http://www.nytimes.com/2009/05/21/garden/21fix.html?_r=0

    We have had some really old, questionable-looking rental dishwashers through the years, and I have never had an issue getting dishes clean with just scraping.
     
  13. DAKA

    DAKA DOING VERY NICELY, THANK YOU

    Wow, "I didn't know that"
     
  14. Charlatan

    Charlatan sous les pavés, la plage

    Location:
    Temasek
    What's the point of having a dishwasher if you wash them anyway?
     
    • Like Like x 1
  15. snowy

    snowy so kawaii Staff Member

    I have no idea, but people like my MIL HAVE to rinse their dishes very nearly clean before they put them in the dishwasher. I grew up in (apparently) a lazier family, so we always stuck our dishes straight into the dishwasher after removing the major food particles; since we didn't have a disposal growing up, we were used to scraping by the time we moved to a house that did have one.
     
  16. Charlatan

    Charlatan sous les pavés, la plage

    Location:
    Temasek
    That's just the most bizarre thing I've heard today.

    After years of hand washing dishes, when I finally had a dishwasher, there was no way I was going to hand wash unless I had to. Why would people want to do *more* work when the whole point of a dishwasher is to alleviate that drudgery?

    People are weird.
     
  17. Chris Noyb

    Chris Noyb Get in, buckle up, hang on, & be quiet.

    Location:
    Large City, TX
    When I last visited England & Scotland, the rage was having an electric heater in the bathroom specifically for the bath/shower water. I have no idea how much juice they used, but it seemed like a very good idea to me (properly installed, for obvious reasons).
     
  18. Lindy

    Lindy Moderator Staff Member

    Location:
    Nebraska
    On another note, probably probably half the homes in my neighborhood have low-flush toilets and low flow shower heads to save water.:)

    Then they use automatic lawn sprinklers to keep their grass green in summer's heat.:(
     
  19. DAKA

    DAKA DOING VERY NICELY, THANK YOU

    First let me say we HAVE a BOSCH dishwasher, does an incredible job, takes between 40 and 75 minutes !
    Since we are just 2 people, it hardly pays to put the very few dishes in the machine, I have my "system" ,takes me 5 minutes to wash the dishes, glasses and utensils.
    I really do not mind ... (I don't dry, they air dry)
     
  20. snowy

    snowy so kawaii Staff Member

    Presuming that your kitchen sink, like many, can run up to 2.5 gpm, a Bosch 2013-or-newer uses the same amount of water as running your sink for a minute. Seriously. Older than that, they use 3 gallons per load. My sources are the Bosch manuals. I once had a Bosch. Best dishwasher I've ever owned.