Tankless models allow quick, unlimited access to a steady stream of hot water. There is no danger of a shower suddenly going cold, and there is also no tank to gather lime and rust.
Tankless water heater installation costs more than traditional, but they also cost less to operate. Being built to higher standards, they seldom need a repair and last an extra 10 to 15 years. They are about the size of a small suitcase and can be conveniently installed on almost any inside or outside wall, saving valuable floor space.
Opting for tankless water heater installation will give fast access to hot water but not technically “instant” access. For this benefit, an instant hot water unit must be installed along with the tankless heater.