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under sink hot water heater- looks too good to be true?

  • 08-05-2012 12:29pm
    #1
    eejoynt
    Registered Users, Registered Users 2 Posts: 264 ✭✭


    saw a facebook ad for a thing called a watersave EHT10 that goes under your sink, eliminating the amount of runnig taps you have to use to get hot water
    with a retail price of 198 - vat cost unclear anyone estimate the payback period?


Comments

  • #2
    Gurgle
    Closed Accounts Posts: 5,064 ✭✭✭Gurgle


    From their brochure here:
    Not only have you paid to heat water you don’t use, the next time you turn the tap on you can waste anything from 5 to 30 litres of water waiting for the tap to run hot. Even with an under sink heater you are always heating 10 litres of water.
    But then where is the 5 to 30 litres?
    as
    ... a 15mm pipe... Every 1m of pipe contains 0.1L of water
    So 5 litres is 50m of pipe, 30 litres is 300m of pipe.

    Calculations based on Buckingham palace?


  • #3
    JohnnieK
    Registered Users, Registered Users 2 Posts: 2,526 ✭✭✭JohnnieK


    There are a few of these on the market. Davies in Harmonstown stock a different brand (cant remember what it is).

    I'm not convinced!! What about hard water?


  • #4
    Joey the lips
    Registered Users, Registered Users 2 Posts: 10,262 ✭✭✭✭Joey the lips


    JohnnieK wrote: »
    There are a few of these on the market. Davies in Harmonstown stock a different brand (cant remember what it is).

    I'm not convinced!! What about hard water?

    I agree. Frm experience they only work where there is not much else as an option. Like a clubhouse, bedsit or an ensuite done cheap.


  • #5
    Eoghan Barra
    Closed Accounts Posts: 286 ✭✭Eoghan Barra


    JohnnieK wrote: »
    I'm not convinced!! What about hard water?

    JohnnieK, what issues do you foresee r.e. hard water?


  • #6
    Blanchguy
    Registered Users, Registered Users 2 Posts: 238 ✭✭Blanchguy


    A similar unit, (not integrated into a tap) was sold to me as a solution for providing hot water to wash dishes. However it only raised water temperature by 20 degrees C so wasn't suitable. I did get my money back...


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  • #7
    JohnnieK
    Registered Users, Registered Users 2 Posts: 2,526 ✭✭✭JohnnieK


    Eoghan Barra wrote: »
    JohnnieK, what issues do you foresee r.e. hard water?

    Lime scale doesn't like heating elements and I assume it has one. It will coat the element and eventually result in poor performance or burn out the element.


  • #8
    browner85
    Registered Users, Registered Users 2 Posts: 415 ✭✭browner85


    Blanchguy wrote: »
    A similar unit, (not integrated into a tap) was sold to me as a solution for providing hot water to wash dishes. However it only raised water temperature by 20 degrees C so wasn't suitable. I did get my money back...
    Ive installed one of these in my fathers offices and they work well woudnt hold your hand under it. the element is in the tap an ye just plug her in handy enough!

    no problems with limescale would it not be similar to a t 90 ?


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