What actually fails on a tankless in Cherryville
Tankless units tell you what is wrong if you read them. Nearly every call starts with an error code, and the code plus the gas supply narrows it down long before anyone needs to open anything.
The local variable is the water. Yours comes from the City of Cherryville, drawn from Indian Creek. Where that supply is soft, scale is a slower problem here than the national troubleshooting guides assume, which means a unit throwing a temperature fault in Cherryville is more often a flow sensor, an igniter or a gas supply problem than the limescale everyone reaches for first.
- Ignition and flame failure codes: gas supply, igniter or flame rod before anything more expensive.
- Cold water sandwich: usually a behaviour of the system rather than a fault, and worth explaining before selling you a fix.
- Flow sensor faults: common, cheap, and frequently misdiagnosed as a failing exchanger.
- Heat exchanger: the one genuinely terminal failure, and often still under a long manufacturer warranty. We check the serial before quoting.

What Cherryville itself changes
Where the heaters sit
Utility room, closet and crawlspace. Basements are rare here as everywhere in this region. In the oldest properties the heater has often been fitted into a space that was adapted rather than designed, and the discharge pipe is the first thing we look at.
The housing in Cherryville
Cherryville was incorporated in 1881 and its population is still only around six thousand, which tells you most of what you need to know about the housing: it is old, it is owner-occupied, and the water heaters in it have usually been replaced twice already. Third-cycle replacement is the normal case here rather than the exception, and the tank that is failing is frequently the one somebody put in fifteen years ago without checking the anode since.