About Water Heater Owner

Dan Mercer, editor

Dan Mercer is the pen name of Water Heater Owner’s editor. I’m not a licensed plumber or electrician, and I don’t sell or install water heaters. Every guide here starts from the manufacturers’ manuals and technical bulletins, is cross-checked against what owners consistently report, and says which is which — including what you can safely check yourself and when it’s a job for a licensed plumber or electrician.

When a heat pump water heater throws an error code or starts dripping from somewhere it shouldn't, the answers online are buried in forum threads, locked behind pay-per-answer sites, or written by someone trying to sell you a replacement unit. I started Water Heater Owner to cover the part nobody does well: living with the water heater you already own — decoding what those error codes actually mean, keeping the condensate line clear and the filter clean, and understanding what each mode really costs you per day.

How we write these guides

Every guide is grounded in the official manufacturer manuals and service bulletins (Rheem, A. O. Smith, GE, Bradford White and others) and in what owner communities consistently report. A water heater combines 240-volt electricity, pressurized plumbing, and scalding-hot water: we help you understand and diagnose, and we tell you clearly when a job belongs to a licensed plumber or electrician — not a DIY afternoon. I'm not a licensed plumber or electrician and I won't pretend to be one. The numbers and procedures here come from manufacturer documentation; when something comes from owner reports instead, the guide says so.

Independence

Water Heater Owner is independent and not affiliated with Rheem, A. O. Smith, GE, Bradford White, or any manufacturer, dealer, or plumbing outfit. Some links may be affiliate links (see our Terms), but our guidance is based on what's actually true for owners, not on commissions or lead fees.

Questions or a correction? Get in touch.