Tankless water heaters eliminate the need to store and insulate water in a steel tank by instead heating water on the fly this is why sometimes tankless water heaters are called demand water heaters or instantaneous water heaters.
Tankless water heaters vs tank.
Tankless water heaters if gas fired will save homeowners over 100 annually the longer they remain in service.
Whereas traditional water heater installation costs around 500 tankless installation costs double or more.
And there are limits to how much hot water can be produced per minute.
Tankless water heaters heat only the water you need when you need it eliminating the need for a storage tank.
Tankless water heaters are more compact and can heat up water as you use it.
They are smaller and more energy efficient than traditional storage tank water heaters but more expensive.
These setups only provide hot water when it is needed.
It uses high powered burners to rapidly heat water as it runs through a heat exchanger and deliver it directly to your faucets or shower without storing it in a tank.
Instead they heat water as it passes through the unit using a heat exchanger to rapidly bring it.
According to energy gov for homes that use 41 gallons or less of hot water daily demand or tankless water heaters can be 24 to 34 more energy efficient than conventional storage tank water heaters.
Tankless water heaters heat water directly without the use of a storage tank.