Descaling on Matthews water
Manufacturers write one descaling interval for the whole country, and it is set for hard water. Yours comes from Charlotte Water, 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 Matthews itself changes
The housing in Matthews
Matthews is older than its reputation. The peak build decade is the 1980s at 23.1%, and 1980 to 1999 together account for 45.3% of the housing stock. That makes Matthews a third-cycle replacement market rather than a first-failure one: most of these homes are on their second or third water heater already, and the tanks going in now are replacing tanks that themselves replaced the original.
Where the heaters sit
Garage and crawlspace both common given the build era, with closet installs in the newer infill. Access is generally reasonable but the older subdivisions have tighter crawlspaces than the 2000s stock.