A typical tankless water heater installation takes 4 to 8 hours from start to finish, with the timeline primarily determined by your existing plumbing configuration, gas line requirements, and venting complexity. This comprehensive process involves far more than simply swapping out equipment—it requires careful assessment, precise installation, and thorough testing to ensure your new system operates at peak efficiency.
The installation begins with a detailed evaluation of your current water heating setup and home's infrastructure. Our technicians first disconnect and remove your existing tank water heater, which typically takes 1 to 2 hours depending on its age and condition. We then assess your gas lines to determine if they meet the higher BTU demands of a tankless unit. Many homes require gas line upgrades or rerouting to support the increased fuel flow—a process that can add 2 to 4 hours to the overall timeline. We also evaluate your venting system, as tankless units require either direct venting through an exterior wall or reconfiguration of existing chimney vents, which adds another critical dimension to installation complexity.
The actual mounting and connection of the tankless unit typically requires 1 to 2 hours. We install the unit in an optimal location—usually near the point of use or in a central location to minimize hot water delay—and secure all necessary brackets and supports. Our technicians then connect the gas supply lines, water inlet and outlet connections, and electrical components. For units like the Noritz models we're authorized to install, this includes precise pressure testing and connection verification to prevent leaks.
One significant advantage of our installation approach is that we dispatch a licensed master plumber who shows up prepared to get the job done right. Rather than scheduling multiple visits or experiencing delays waiting for parts, we carry essential components including gas fittings, dielectric unions, thermal expansion tanks, specialized venting materials, and electrical components on every job. This preparation means most installations finish the same day without unnecessary delays.
The final 30 to 60 minutes focuses on system commissioning and performance testing. We activate water flow through the unit, check for any leaks at connection points, verify proper gas combustion, test the ignition system, and confirm that hot water reaches your fixtures at the expected temperature. We also activate the manufacturer warranty, ensure all safety features function correctly, and provide you with operational training so you understand your new system's features and maintenance requirements.
Our 19 years in business and our licensing (MPL-38162) as authorized Noritz dealers ensures that your installation meets all local plumbing codes and manufacturer specifications. This expertise translates directly into faster, more efficient installations that protect your investment and guarantee reliable hot water delivery for years to come.
Blackmon Plumbing is a licensed plumbing contractor providing professional tankless water heater installation services throughout the region, with same-day completion and full manufacturer warranty support.