Bosch are one of the leading makers of instant hot water units. Their bosch tankless water heaters are backed by a long-standing worldwide reputation and quality guarantees.
If you are accustomed to heating your water in a tank - something like a home heating propane tank - then the Bosch range may give you a pleasant surprise. Did you know you can have non-stop hot water from a unit the size of a laptop computer?
Since the bosch tankless hot water heater is an on-demand unit they heat the water as it comes through the pipes - imagine that they spread the water out and put flames under it (this is exactly what some of the gas and oil units do). This means that their heating power is affected by size - if you want to heat more water you will need more flames, more pipes... a bigger unit.
So the laptop sized unit, something like a bosch aqua star tankless water heater 125 would only serve one hot water need at a time - the washing machine or a bath, not both. But you do not need to get enormous units to replace a hot water tank. A still compact unit, the 240FX bosch aqua star tankless water heater is able to serve hot water up to two big unit at the same time. What is more, they should last a quarter of a century or so.
Need more hot water? Well there are bosch tankless water heaters to meet almost every sized household.