Descaling on Mint Hill water
Manufacturers write one descaling interval for the whole country, and it is set for hard water. Yours comes from Charlotte Water, though parts of the area are on Aqua NC, and where that supply is soft the exchanger fouls considerably more slowly than that schedule assumes.
We will tell you honestly where you sit on that, because the alternative is descaling a unit annually that does not need it. Two caveats worth knowing before you skip it entirely: some manufacturers require documented annual servicing to keep the heat exchanger warranty valid, which is worth more than the service costs, and a property on a private well is a completely different conversation from one on the municipal supply.
- Descale on an interval that matches your actual water rather than the manual's default.
- Inlet filter clean, which is the most commonly skipped job and the cheapest.
- Flow rate and combustion check, so a declining unit is caught before it fails in January.

What Mint Hill itself changes
The housing in Mint Hill
Mint Hill is an old farming town with two distinct housing waves rather than one. The 2000s are the single biggest decade at 22.0%, but the 1970s and 1980s together account for 35.0%, which is a larger share and gives Mint Hill the largest 1970s cohort of anywhere in this study. Those older homes are on their third or fourth water heater, and they are the ones where nobody has ever checked an anode rod.
Where the heaters sit
Garage and crawlspace both common, reflecting the two build waves. The 1970s and 1980s stock frequently has tighter access than the newer subdivisions, and we price that before the visit.