The 240V / 18 kW 4-Chamber Commercial Electric Tankless Water Heater can provide continuous hot water when sized appropriately. A. O. Smith's Commercial Electric Tankless water heaters only heat water when needed, leading to potential energy and utility bill savings. These models are easy to install and save valuable storage space--they can be wall mounted, using standard 3/4-in NPT water connections and do not require venting. Designed with a soft start, the electric tankless produce a soft electric draw when powering on, reducing light dimming impact.

Electric tankless water heaters typically require greater electrical supply capacity than standard tank-type models. Please check with your local professional to ensure your home's power supply and breaker panel can support this model.

A. O. Smith offers the largest commercial product selection available, including the most specified commercial unit in the U.S. We offer more than 500 different commercial models, including gas fired, oil-fired and electric configurations, ranging in capacities from 5 to 10,000 gallons, with input range from 50,000 BTU to the equivalent of 4,000,000 BTU. Our comprehensive line is the natural fit for spec jobs requiring everything from the smallest commercial installation up to the largest multi-structure complex.