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  1. If you followed the installation diagrams...

    If you followed the installation diagrams published in the Navian product installation manual, then you could be up for some challenges right off the back. Notice that the pump on the Navien CH...
  2. Set-point can play a very important role based on...

    Set-point can play a very important role based on the design of a tankless water heater. Some tankless water heater manufacturers are known to use bypass valves (controlled or fixed) to assist with...
  3. This is actually not the way to go about this. ...

    This is actually not the way to go about this. Your tankless is not a boiler and therefore cannot be used in the manner described. Your tankless must heat domestic water directly. You can add a...
  4. Actually, you are not very accurate here. Yes,...

    Actually, you are not very accurate here. Yes, tankless tests are all done in the same manner, which means that Navian's A models are tested in the same fashion as the competitor's brands without a...
  5. Where do the others rank in your book? Who is at...

    Where do the others rank in your book? Who is at the top of the crop?
  6. Did you notice anything missing from the list? ...

    Did you notice anything missing from the list? Condensing tankless is nowhere to be found. With PVC 636 venting of condensing tankless, I wonder what the installation costs comparison will look...
  7. I have not personally done any tests, but it...

    I have not personally done any tests, but it looks to me that the efficiency depends on temperature set-point as much as it does on length of usage and firing rate. You would have to look at the...
  8. Agreed that temperature control and flow rate are...

    Agreed that temperature control and flow rate are both more important. But which tankless provides both features better than any other manufacturer does? according to the Center for Energy and the...
  9. By the way, the Center for Energy and Efficinecy...

    By the way, the Center for Energy and Efficinecy has a report out that states that none condensing tankless water heaters performed at highere efficiencies under low flow conditions than Navien...
  10. I am suprised that you prefer Rinnai over Noritz....

    I am suprised that you prefer Rinnai over Noritz. If you want to speak about ease of installation, the Noritz concentric vent products are easier to install than Rinnai. No cutting of venting...
  11. I do not believe that you Paloma unit has a dual...

    I do not believe that you Paloma unit has a dual flame burner. As of the time of this email, Noritz is the only water heater with a Dual flame burner. They also have an eco burner on their new line...
  12. Hmm...4% difference in efficiency eh?

    Hi nhmaster,

    You claim that tankless water heaters are only 4% more efficient compared with tank type water heaters. Could you provide us your source? From what I understand, even the best...
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