Tankless Water Heater Voltage Requirements

Natural gas and propane tankless water heaters don t need much electricity and are 8 50 more effective than traditional tank style water heaters.

Tankless water heater voltage requirements.

Rinnai tankless water heaters require 120 volts ac 60 hz and less than three amps. For example an electric tankless heater that is rated at raising the water temperature 55 degrees at 1 5 gpm will supply you with a 120 degree temperature if the incoming water is 65 f or higher. 1 x 6 awg copper. Recommended minimum wire gauge.

4 x 40 amps dp. Tankless water heaters can be 8 14 more energy efficient for homes that use a lot of hot water around 86 gallons per day. Recommended household electric service. Electrical even gas water heaters have electrical parts and need to be hooked up to your breaker box.

For homes that use 41 gallons or less of hot water daily demand water heaters can be 24 34 more energy efficient than conventional storage tank water heaters. The need for a tankless water heater is 120v ac which is the regular power outlet in the u s homes. Today tankless water heater energy factors range between 64 and 91 for gas fired models and up to 99 for electric models. This ef rating is based on test procedures developed by the u s.

Breaker size and wire gauge must meet all applicable local state provincial and national electrical codes for your area these are only guidelines that will apply to most installations. For both gas and electric models a tankless water heater s overall energy efficiency is measured using an energy factor ef rating.