Tankless water heater.
Tankless water heater.
Here's the thing. The device itself is good. But Rinnai's business practice is the real problem.
Use of an app to control things like scheduling is advertised, not only on the device itself but throughout all of the documentation.
The app is not directly usable, nor is it intuitive to get it working.
If you buy an EXTRA WiFi module, you can connect an app. But the WiFi module is - extra money.
With Bluetooth only, it only works if you're using a recirc pump. That's not anywhere in the docs. The docs tell you that you must have a "Pro" assist you with the initial set up. This also isn't true - the "Pro" can't set anything up if it doesn't have a recirc pump.
In summary: the model that they advertise can't really do anything but run at a basic level - and the advertising is false and misleading.
Now, is this a big thing? No. But it's the principle. You should be able to do things such as "hey, go ahead and heat up the water every day between A and B" rather than rely on the device to "guess" when you need it (which is the default behavior).
February 21, 2025
Unprompted review