Tankless water heaters

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  1. #1
    jalpaesq is offline Member
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    Default Tankless water heaters

    I have to replace my current hot water heater. I'm thinking about a tankless system. But I can't get much good info on them. Are they better than an energy efficient tank? What size do I need for a 3 bathroom house? Any brands to look for or stay away from? Thanks.

    Kevin

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    Sikklightning is offline Senior Member
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    From what i hear, they don't have nearly the recovery of a regular water heater. I would just go old fashion. Its hard to beat it.
    A world where medical advances allow us to live forever is a terrifying thought...

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    Flash 3's Avatar
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    I've heard good things about tankless water heaters. The only complaint is that water doesn't heat up as fast as conventional water heaters.

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    I have 4 rennai tankless water heaters in one of my businesses. Installed 6 years ago and only had 1 minor problem so far. Can't really give much input on residential applications. If this is for an existing house, make sure to look up the venting requirements as tankless heater need larger diameter venting which might be a problem if the existing venting goes through your roof.
    Time is a container... Fill with quality!

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    Recovery? There is 0 recovery. It is instant hot water.
    Quote Originally Posted by Sikklightning View Post
    From what i hear, they don't have nearly the recovery of a regular water heater. I would just go old fashion. Its hard to beat it.

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    forhamilton's Avatar
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    You will need one in each bathroom. They work great.
    Quote Originally Posted by jalpaesq View Post
    I have to replace my current hot water heater. I'm thinking about a tankless system. But I can't get much good info on them. Are they better than an energy efficient tank? What size do I need for a 3 bathroom house? Any brands to look for or stay away from? Thanks.

    Kevin

  8. #7
    Just In Time's Avatar
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    I PLAN ON SWITCHING to them soon. also ill need a separate on just for basement bathroom as I will be installing stand up tile shower with kohler tiles

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    They are great for residential. We install them all the time for our customers. Check out Rheem, they make nice poducts.

    Rheem Tankless Gas Water Heaters - Tankless 74 Indoor Direct Vent Series

    Recovery time is not really an issue since they make hot water instantly as you need it. For most residential applications if you size it properly for the job you will have plenty of hot water.

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    Justin D's Avatar
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    Another nice option to add is a recirc line. This keeps the water inside the pipes of your house hot. Eliminating the waste of water while waiting for the new hot to reach the faucet.

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    I have a Takagi T-K2 in my house and I LOVE it!

    I can shower literally forever and with my Hansghroe thermostatic valves in the shower, it dosen't matter if I have the dishwasher, washing machine, and sink running. It all just works. Did I mention I can fit 4 people in my shower?

    If possible 2 tankless units positioned close to the bathrooms and kitchen(s) respectively will give you the absolutely best results and very quick warm-up times.

    Buy a top quality brand like Takagi Rheem or Rinnai. Accept nothing else (Bosh sucks)

    J08M3 - how'd you get recirc systems working with tankless?
    -Ben Cannon.

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