Upgrading to a commercial-grade water heater means years of dependable hot water. At this Columbia Drive home, we installed a State ProLine 50-gallon unit designed for heavy residential use. The installation included a new thermal expansion tank to protect against pressure buildup, flexible copper connectors for earthquake resistance, and a professionally calibrated temperature setting. We also added a drain pan with an emergency overflow line for extra protection. The homeowner can now enjoy consistent hot water for their growing family's needs.