Bad Advice? Water Heater.

A small (in water capacity, not in electrical loading) water heater may in my view be connected to a ring final circuit. It is arguably no worse than an electric kettle that might otherwise be used to provide the same hot water demand.


There are several types of point of use 3 kw water heater.

Some have no storage whatsoever, rather like an electric shower. The flow rate of these is minimal, OK for handwashing but not very good for washing up.


Other types have a small storage vessel, these are a better product in my view. The flow rate will fill a washing up bowl or small sink quickly, and re-heat in about 10 or 15 minutes if more hot water is desired.


Some types have a pressure rated storage vessel, these can be installed under the sink with the outlet connected to a standard tap. These MUST be correctly installed as they are a pressure system. They can explode if defective or incorrectly installed.


Other types have a non-pressure vessel, which is permanently connected to an open outlet spout. To obtain hot water, a COLD WATER inlet valve is opened and this displaces the hot water. These are cheap, safe, and simple but are now VERY last century.

A small (in water capacity, not in electrical loading) water heater may in my view be connected to a ring final circuit. It is arguably no worse than an electric kettle that might otherwise be used to provide the same hot water demand.


There are several types of point of use 3 kw water heater.

Some have no storage whatsoever, rather like an electric shower. The flow rate of these is minimal, OK for handwashing but not very good for washing up.


Other types have a small storage vessel, these are a better product in my view. The flow rate will fill a washing up bowl or small sink quickly, and re-heat in about 10 or 15 minutes if more hot water is desired.


Some types have a pressure rated storage vessel, these can be installed under the sink with the outlet connected to a standard tap. These MUST be correctly installed as they are a pressure system. They can explode if defective or incorrectly installed.


Other types have a non-pressure vessel, which is permanently connected to an open outlet spout. To obtain hot water, a COLD WATER inlet valve is opened and this displaces the hot water. These are cheap, safe, and simple but are now VERY last century.