What actually fails on a tankless in Statesville
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 Statesville. 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 Statesville 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 Statesville itself changes
Where the heaters sit
Crawlspace, basement-adjacent utility space and closet through the older neighbourhoods around downtown, Signal Hill and the Race Street area. Garage and attic in the newer building out towards West Iredell and Brookdale. Access is priced before the visit.
The housing in Statesville
Statesville is the Iredell county seat and it has been a town since 1789, which shows in the housing. Three separate historic districts are on the National Register here: Academy Hill, built mainly between 1885 and 1930, South Race Street, and the Commercial district dating from about 1875 to 1925. Around that core sits a much newer ring of subdivision building. A water heater call in the historic district and a water heater call off the bypass are effectively two different jobs, and quoting them the same way is how people end up surprised.