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  1. #1

    is tankless worth it for me ?

    I dont have much space and i have an on demand water heater that uses my oil boiler to heat the water. I was looking at getting a water heater ( tank ) but realized i didnt have the space. I have natural gas that comes into my house for the stoves i have. I live in NYC.

    My goal is to save money by having my hotwater come from a tankless system ( wall mount so lack of space is no issue).

    Its costing me between 300 a month to get oil in the house and its the summer and for heating water its costing me alot.

    So gentlemen shouldnt putting in a tankless unit save me money ?

  2. #2
    Join Date
    Sep 2008
    Location
    Western PA
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    25,433

  3. #3
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    Over oil, yes, should save, but will you get a reasonable return. Maybe not. IF you hav a large enough gas line, it might be worth looking at a combi boiler and get away from oil altogether.

    AOSmith also has a hybrid with a small storage tank that I think only requires 100k BTU's input. You ave to be able to run a PVC pipe to a outside wall to vent these.

  4. #4

    looks like i will have to wait

    i want to get away from the oil but i dont think i have the funds right now to get the combi and have it installed. I can have the tankless installed right away.

    is their a condensing combi with a small say 20 gallon tank ?

    Thanks.

  5. #5
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    Having a storage tank defeats the point of a tankless unit like a Combi. The other option is using a tankless that is approved for space heating and use is with an external heat exchanger and circulation pump for the space heating. It won't last nearly as long as a full Combi unit. But I know Ranni for example is marketing their heavily for space heating and has a big online applicaiton guide showing varies diagrams of different installations.

  6. #6
    Join Date
    Jan 2012
    Location
    WEST COLUMBIA S.C.
    Posts
    278
    x2

  7. #7

    Thank you for your recommedations.

    i think im going to go with this one.

    http://www.rinnai.us/boilers/e110c/

    now i just need to figure out how i am going to pay for it all.


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