ASHLAND CITY, Tenn. — A.O. Smith, a water heater manufacturer, has added depth to its diverse product portfolio with the introduction of the ProLine® Electric Tankless family for commercial, residential, and point-of-use applications.

The ProLine Electric Tankless is available in three sizes with 45 different models ranging from 2.4-32kW and a Uniform Energy Factor up to 0.93. The units are available in 120-, 208-, 240-, and 277-V options.

A.O. Smith enters the electric tankless market with a number of innovative features and benefits previously unavailable in this category. All models have true Dry Fire Protection. The element will only turn on when the chamber is full of water, meaning that plumbers and electricians have the freedom to work without fear of costly dry fires. All models also have Scale Reduction Technology, which reduces scale formation on the elements and chamber walls. This reduces failures and service requirements. Further, the units do not contain any moving parts or screens — another common place scale buildup can occur.

“We’re excited to bring the ProLine Electric Tankless family to our partners, who can now offer a complete line of A.O. Smith products to their customers,” said David Chisolm, vice president of marketing at A.O. Smith. “Contractors will be extremely comfortable installing these units, which plumb very similarly to standard electric water heaters — and end users will appreciate their compact size, reliability, and energy-saving capabilities.”

The single-chamber design, which features a pre-heat function that helps bring domestic hot water faster to the fixture, is compact enough to be mounted directly under a sink, in a remote bathroom, or other hard-to-plumb areas.

The largest unit in the family, the four-chamber model, can produce up to 4.25 gallons of hot water per minute — enough to support 2.5 baths in a whole-home or multifamily application. The two-chamber design is ideal for applications, where the heater is close to where the hot water is being used, such as cabins. Both sizes feature a soft start power draw, so that lights do not dim during a heavy power draw. For more information, visit