• Turn off the electricity to your electric heating system and the house's primary water supply.
• Then, attach a hose to your tank's bottom and route it to the outside. Remove the old water heater and dispose of it.
• Remove the pipes connecting to the water heater using the pipe cutters.
• Install your new heat pump system.
• Connect your latest heating system to the main supply line with pipes that are the same size and kind as the current water line.
• Now, install the vacuum valve at the top of your water heater to keep it from falling in on itself if the power goes out.
• Ensure the heat pump water heater has the pressure and temperature release valve that fits appropriately.
• You require an expansion tank or expansion valve in some systems.
• Restart the water and power.
