Tankless Water Heater Voltage Requirements

Rinnai tankless water heaters require 120 volts ac 60 hz and less than three amps.

Tankless water heater voltage requirements.

4 x 40 amps dp. For both gas and electric models a tankless water heater s overall energy efficiency is measured using an energy factor ef rating. The need for a tankless water heater is 120v ac which is the regular power outlet in the u s homes. Recommended household electric service.

Carpentry although you won t be working with wood you need to be familiar with levels to ensure a level base and may need to anchor pipes to ceiling beams. Natural gas and propane tankless water heaters don t need much electricity and are 8 50 more effective than traditional tank style water heaters. 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. This means you will have to upgrade your electrical system to accommodate for the larger load demand which could cost you up to 1 500.

Today tankless water heater energy factors range between 64 and 91 for gas fired models and up to 99 for electric models. 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. Tankless water heaters can be 8 14 more energy efficient for homes that use a lot of hot water around 86 gallons per day. This ef rating is based on test procedures developed by the u s.

Recommended minimum wire gauge. 1 x 6 awg copper.