The Home Ownership Thread

Discussion in 'Fine Living, Home, Design & Auto' started by Douglas, Jan 31, 2012.

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  1. Medwed

    Medwed Senior member

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    You only run out of hot water when you have a water tank to draw water from. Tankless water heaters by design cannot run out of hot water, unless of course they are broken and need replacement.
    Tankless heaters also heat the house if you have water heating system like I do. No variation in water pressure or water temperature with tankless heaters.
     


  2. idfnl

    idfnl Senior member

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    Isn't there significantly more maintenance with a tank-less system?
     


  3. idfnl

    idfnl Senior member

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    I lived in Europe for a while and liked the tank-less system. I also didn't experience problems of any real significance, although technically if you turn too many taps on at once you could struggle with maintaining temp.
     


  4. mike1445

    mike1445 Senior member

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    im seeing a little about that, i cant imagine its a great deal more than maintenance for regular water heaters but if it results in a longer product lifespan than it makes since to me...is it just a routine flushing, can anyone elaborate?
     


  5. Ataturk

    Ataturk Senior member

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    Tankless heaters have to decide how much water to heat, and it takes time for the water to work its way through the maze of pipes inside it. For whatever reason, they tend to put out water with significant variations in temperature when you vary the demand. I'm hardly the only one who's noticed this.

    Also, tankless heaters don't run out of water; they run out of the ability to heat the water to your desired temperature when too much water is pulled through. Maybe if you use Government Approved 1.5 gallon-per-minute shower heads and faucets everywhere they can handle it. But where water isn't scarce, that sucks. And try filling a tub with one.


    Those numbers are based on very unrealistic assumptions about how much water will be used. Real people use way more water, and the more you use the better the tank style heater does.

    But don't take my word for it. Here's the top three hits from google:

    http://www.consumerreports.org/cro/...eaters/overview/tankless-water-heaters-ov.htm

    http://www.greenbuildingadvisor.com/blogs/dept/musings/are-tankless-water-heaters-waste-money

    [​IMG]

    http://www.fplblog.com/energy-efficiency/does-a-tankless-water-heater-save-money/

    In Florida:

     


  6. Douglas

    Douglas Stupid ass member

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    I'm as skeptical on tankless heaters as anyone, in particular 20-year-lifespan claims that are, at the moment, essentially completely unsubstantiated...

    ...but that article is 5 years old. That's an eternity when we're talking about evolving technologies and markets.

    EDIT: I was honing in on the CR article - but the Green Building Advisor article is from April 2012, put out by what is obviously a green building advocate, and is pretty damning.
     
    Last edited: Feb 25, 2013


  7. otc

    otc Senior member

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    I dunno..I can run my parents tank style heater down in a single shower.

    Not to where it goes completely cold, but I have to keep turning down the cold water more and more. Seems like it is using up the hot water and replacing it with lukewarm water that hasn't been fully heated yet as the tank refills itself. And even with the tank, you can lose temp when someone uses the other taps (well maybe not with a 1.5gpm showerhead, but certainly with a higher flow setup where turning on a top cuts the flow rate and means you get more cold water in the mix).

    A tankless system might still have problems when multiple people use the taps (which...how often does that really happen?), but at least it can keep pumping out hot water forever.
     


  8. Piobaire

    Piobaire Not left of center?

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    I wonder if water hardness impacts life expectancy of tankless more than tanks. It just seems to me the nature of the two methods would lead to tankless getting hit faster by hard water. Could be wrong and having a water softener would stop that anyway.
     


  9. idfnl

    idfnl Senior member

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    I think its substantiated, these systems have not been popular in the US but have been used abroad for decades.
     


  10. Douglas

    Douglas Stupid ass member

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    This just sounds like your parents' water heater is undersized or is turned down too low (for the energy savings!).

    I hope you own your own home, and are just bringing your folks' house in as an anecdotal counterpoint.
     
    Last edited: Feb 25, 2013


  11. Ataturk

    Ataturk Senior member

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    Dish washer, washing machine, kitchen sink, shower, etc. If you have more than one person in the house it's easy to see these things being used at the same time.

    Also, that reminds me, I think those tankless heaters are rated at X GPM at a fairly low temperature. I like my hot water hot enough to burn you.

    As to your parents' heater, is it electric? I'd bet one of the elements has gone bad and needs to be replaced. Not hard to do at all.
     
    Last edited: Feb 25, 2013


  12. SkinnyGoomba

    SkinnyGoomba Senior member

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    When it comes to green building ideas, for me it makes sense if it improves another feature. For the water heater it would be worth it for me if you could run multiple taps without a change in temperature and without requiring multiple units. Currently I can run mine for about 45 minutes of hot shower without any issues.

    It has trouble recovering if I run a bath then want to use the shower after (TMI?).....you cant have a drink and relax in the shower.

    Basically there needs to be additional, noticeable benefit outside of a long term cost savings.

    That being said, if I were doing a new home I would favor all of the green options.
     
    Last edited: Feb 25, 2013


  13. idfnl

    idfnl Senior member

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    If his parents are anything like mine, its the latter.
     
    Last edited: Feb 25, 2013


  14. mike1445

    mike1445 Senior member

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    exactly my thoughts. We're taking down the old vent chimney as it frees up a corner in the kitchen and a bedroom and ditching the old water heater. It's just my wife and I at the moment but its a big house so with visitors or a big family, water usage could get pretty high. We'll have to put in either a tank-less or power vent and I'd like to pick the up and coming tech if it is becoming the standard
     


  15. imschatz

    imschatz Senior member

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    Random Product Recommendation/Review:

    I've been reno'ing my master bedroom. Pulled up the carpet, and had half decent hardwood underneath - problem was, it had 30+ years of grime on it and the high traffic spots were really worn down.

    After cleaning up the paint spills, and a good water/soap scrub, did 2 coats of this:
    http://www.homedepot.com/h_d1/N-5yc...53&langId=-1&keyword=rejuvenate&storeId=10051

    Gotta say .. definitely worth $20. Saved a lot of time and money from not refinishing. Should easily get me through the next couple years when I can afford to replace all the main floor hardwood. It doesn't look 'new', and you can still see significant wear on the high traffic areas .. but at least it's nice and smooth, and looks clean.
     
    Last edited: Feb 25, 2013


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