Tankless On Demand Water Heater

water heater
a heater and storage tank to supply heated water
An appliance for supplying hot water for purposes other than space heating or pool heating.
Water heating is a thermodynamic process using an energy source to heat water above its initial temperature. Typical domestic uses of hot water are for cooking, cleaning, bathing, and space heating. In industry, both hot water and water heated to steam have many uses.

on demand
Comcast Corporation ( and ), founded in 1963, is the largest cable operator and the largest home internet service provider in the United States, providing cable television, broadband Internet, and telephone service to both residential and commercial customers in 39 states and the District of
When needed or required
An entertainment service that allows viewers instant access to content such as movies, cable series, original programs, educational programs, premium channels, news, sports, etc.

tankless
Refers to products with no storage capacity that utilize a heat exchanger or burner system to heat water as it passes through tubular heat exchanger.