Another option would be to ask your electrician. You could also look for a label in your electrical panel.
#Installing a electric hot water heater how to
How to determine the current size of your home’s electrical service? Check the electrical breaker box that can usually be found outside the house.
Also, while most require 240V power, some very small POU units can run on 120V. The Tempra 24 Plus which is somewhat smaller still requires 2x 50A double pole breakers and 150A main service.Ī point-of-use (POU) electric tankless water heater should not be a problem in terms of amperage requirements. Stiebel Eltron Tempra 36 Plus – Available on This could mean that you have to upgrade your old electrical service panel with bigger wires and bigger breakers, or you have to run a completely new one entailing a couple of thousand dollars worth of electrical work.įYI: The Stiebel Eltron Tempra 36 Plus can provide 5.45 gallons per minute at 59 ☏ feed water and 105 ☏ output water temperature. To put this into perspective, the average home has a total capacity of 200A. The Stiebel Eltron Tempra 36 Plus requires 3 separate dedicated 50A double pole breakers and a recommended main service of at least 300A. This is because the amp draw of such a system is simply too high. Not every home is suited for a whole house electric tankless water heater.
#Installing a electric hot water heater install
What are the requirements to install an electric tankless water heater? Electrical Service Requirements