Valerie,
Our units are built in with hot and cold pipe, ideally you should go for storage heater.
For instant heater, the heat of the water flow is not constant. I am using a instant heater at home right now, cold water would flow out for a few seconds before hot water. If you stop the tap, and re-run the water again it would be extremely hot because time is given to them to heat up the water. As the water continues to flow, temp. goes down again to constant. So the unconstant water temperature is a big turn off for me.
Instant heater apparently uses more electricity compare to storage, but is probably more efficient because you heat only the water you use while storage heat up the whole tank and continuously re-heat whenever water falls below the desired temperature.
Our units are built in with hot and cold pipe, ideally you should go for storage heater.
For instant heater, the heat of the water flow is not constant. I am using a instant heater at home right now, cold water would flow out for a few seconds before hot water. If you stop the tap, and re-run the water again it would be extremely hot because time is given to them to heat up the water. As the water continues to flow, temp. goes down again to constant. So the unconstant water temperature is a big turn off for me.
Instant heater apparently uses more electricity compare to storage, but is probably more efficient because you heat only the water you use while storage heat up the whole tank and continuously re-heat whenever water falls below the desired temperature.