Steps:
- Shut off the electricity and water leading to the old water heater.
- Drain the water from the old water heater.
- Disconnect and remove the old water heater.
- Install new shut-off valves to the hot- and cold-water pipes.
- Set new heater into place directly beneath the water-supply lines.
- Remove vacuum breakers and solder on the appropriate copper fittings.
- Connect new water heater to shut-off valves on the hot and cold water-supply pipes.
- Turn the water back on to fill the tank.
- Connect the existing electrical cable to the new heater.
- Run the heater’s condensate line to a condensate pump.
- Connect condensate pump to laundry drain using flexible plastic tubing.
- Turn the electricity back on.
- Install the heater’s air filter.
- Adjust water temperature at the heater’s electronic control panel.