How to replace old water heater with heat pump? It seems very complicated, infact, it is not. Just follow our steps, but it’s recommended you have a professional install your heat pump water heater to maximize its energy efficiency. According to experience, the average water heater installation cost is around $700 to $900.
- 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.
There still has some notes need to take care.
- Please do exhaust the air in water system before running the machine after you completely finished the water system pipe connection.
- The water flow switch must be installed at the horizontal straight pipe line section, at least 5 times diameter away from the partial resistance devices like elbow and valves.
- The pipe must be insulated (Foamed synthetic elastomer is recommended ) closely in order to improve cooling (heating) effect and energy conservation.
- The unit should install with drainpipe to prevent it from freezing and make it convenient to drain water inside