Designed for single point-of-use applications such as hand sinks in RVs, boats, restaurants, hotels, and medical offices requiring low flow rates not exceeding 1 GPM. Easy-to-install. Fits under a sink or sink cabinet. Heat exchanger made of stainless steel. Copper and brass heating element. 30A breaker required. Pipe fitting: 1/2 In. NPT. Activation flow: 0.25 gallon. Energy factor: 0.98. UL and CSA certified.