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I finally decided to replace the tank water heater I have with a tankless one. After some research, I narrowed the choices down to two "finalists": Takagi and Rinnai tankless water heaters. Rinnai seems to have some advantages, among them higher output (8.3gpm vs. Takagi's 6.9gmp) and, most important, lower kick-off flow (0.5gpm vs. Takagi's 0.75gmp). On the other hand Takagi seems more spread than Rinnai and also I could find a lot of information documentation for Takagi and almost none for Rinnai.
Need some advice from people who are using these water heaters.
Hi Sandy. I'm no expert on tankless water heaters but I will share what I know. We have installed numerous twh's in recent years (residential, commercial & industrial) the vast majority of which were Rinnai. I have received nothing but glowing reports about the Rinnai in all applications and we have yet to make a service call on one. I cannot say the same for the other brands we have installed.
To be fair, I'm not familiar with Takagi so I cannot speak to that issue.
A word of warning though...the service calls we have made on twh's which were installed by OTHERS were all-without exception-due to improper installation (most often venting issues). Whichever brand you ultimately choose, a bit of research on your installer beforehand is a wise decision.
Rinnai has been making this type of heater for about 50 years and have the experience. It's only been a few years that they have sold them in North America
The one thing you need to have is constant water supply and water pressure. If you are on a well, added filtration will be required.
