Call (877) 418-1589. That is the whole contact page, and it is deliberate: this is a pay-per-call service, and the phone call is how a job starts. There is no contact form, and there is no email address to wait on.
What to have ready when you call
- The symptom. No hot water, lukewarm water, an error code, or a leak.
- The code. The exact number or letters on the display, if there is one.
- The brand. Rinnai, Navien, Noritz, Rheem, or whatever the unit says.
- The city. Which of the 30 cities the unit is in.
That is enough. An independent local provider in your city takes the call from there and arranges the visit.