Our Rinnai tankless hot water heaters are built to commercial-grade standards and each individual unit is tested for quality. No need to worry about sharing the hot water with other appliances like a dishwasher or washing machine - hot water is always available. Rinnai tankless water heaters last up to twice as long and save energy as they only heat water when it is needed. It's smaller size allows for more discreet placement in your home.