The first descale can expose corrosion that had effectively been sealed over.

A tankless water heater looks to be nothing more than a simple gray box that hangs on the wall. Yet inside that box is some pretty remarkable engineering, because when you open a hot-water faucet, it ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: Reddit A routine maintenance visit turned into an expensive surprise for one homeowner after a long-neglected ...