Takagi has been delivering innovative residential and commercial hot water solutions for over 60 years. Their line of tankless water heaters are unmatched in quality and diversity, providing the perfect hot water solution for any situation. The T-K4U-IN-N features a copper heat exchanger, which helps to stabilize outgoing water temperature and reduce pressure drops compared to a standard stainless steel exchanger. The T-K4U line is also designed to meet Ultra-Low NOx standards, meaning it’s good for your wallet and the environment. With an included remote control the T-K4U-IN-N is the perfect answer to all your residential or commercial hot water problems.