Kendall County pros test hardness, set flush cadence

https://pub-a3d0921cc64d4b5c8a08eea958469665.r2.dev/tankless-water-heater-repair/what-358-mgl-hard-water-does-to-boerne-tankless-heaters.html

Kendall County pros test hardness, set flush cadence, and size prefilters for local wells; big-box installers miss gas pressure, vent length, and recirc details that accelerate scale and trigger nuisance codes.