• Steps:

    1. Turn off the main water valve at the meter.
    2. Cut into the existing water–supply pipes attached to the old water heater.
    3. Remove the old water heater and mount the new tankless heater to the wall.
    4. Run threaded iron pipe from the outdoor propane tank to the heater; tighten all connections with a pipe wrench.
    5. Use a union fitting to connect the threaded gas pipe to the heater.
    6. Run copper pipe from the existing water-supply line to the heater. Solder all copper connections.
    7. Open the main water valve, and check your work for leaks.
    8. Turn on the propane and plug the heater into a nearby electrical outlet.
    9. Set water temperature to 120 degrees F at the heater's control panel.

    Products and services from this video:
    • 3 to 4 hours
    • $950 to $1,150, depending on heater model, plus $300 to $400 for installation
    • Difficulty: Hard
      best to leave this installation to an experienced plumbing and heating expert

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      Video Directory

      Selected Topic/Section

      Tools List

      • pipe wrench
        Pipe wrench, for tightening threaded fittings
      • tubing cutter
        Tubing cutter, used to cut copper pipe
      • propane torch
        Propane torch and solder, for soldering together copper pipe and fittings

      Shopping List

      1. Tankless water heater, used to provide hot water

      2. Copper pipe and assorted fittings, for connecting new pressure-booster system to existing water-supply line3. Emery cloth and flux, for cleaning and prepping copper pipe and fittings prior to soldering

      4. Threaded pipe, for supplying propane gas to the heater