Rated for 3-4 applications used simultaneously means that taking a shower and running two sinks at the same time is effortless. Ideal for normal hot water heating applications in ANY size residential single-family home, townhome, condo, cabin, or Light commercial use Rated at 6.8 GPM at 140,000 BTUs with a temperature rise of 38 degrees, this ultra-efficient tankless water heater is ideal for just about every single-family home in the US and Canada CSA certified for installation in the US and Canada. This tankless water heater meets and exceeds all safety and efficiency requirements according to the DOE with an Energy Factor Rating of.83 Advanced Generation 3 Computer board with high performance processing and smart adjust technology built in. Our proprietary developed programming meets and exceeds todays consumer demands With advanced incoming and outgoing water temperature sensor technology, you always have total confidence when it comes to safety Comes with a 10-year warranty on the