Unlike traditional storage tank water heaters, tankless water heaters do not store a reservoir of hot water. As a result, standby losses are reduced, which makes them an energy-efficient alternative to traditional water heating. When water flow is detected, they begin heating water, making them highly efficient and cost-effective. When the demand for water ceases, they enter standby mode and use essentially no energy.
There will always be hot water. Endless hot water - for bathing, cooking, dishes, laundry, and all the other countless ways hot water enriches our lives.
Tankless water heaters consume a fraction of the space consumed by a tank heater. They can be mounted inside or outside.
Because tankless heaters do not store water, they are less subject to corrosion than tank-type heaters. As a result, their expected equipment life is longer - possibly more than 20 years, compared with 10 - 15 years for traditional heaters. Also, because they are not heating 40 - 50 gallons of water 24 hours a day, tankless water heaters are less susceptible to leakage than tank-type water heaters.