I've been looking at ideas for providing hot water for new washroom and for our existing kitchen sink which is very distant from the hot water cylinder.
I was looking at unvented 10 to 15 litre ones but although they are basically cheap the added costs of expansion vessels, pressure reducing valves, etc. push the cost up quite a lot.
So I'm now considering instantaneous water heaters like an electric shower uses but connected to a tap. While looking I have come across the very compact and cheap DAFI ones, they're well under £100 and appear very simple to install. Does anyone have any experience with them?
Their main oddity/downside is that for >7.3kW they use "two phase, 400 volts" which is downright wierd. They do a standard single phase
7.3kW version though which should be adequate for our requirements. I have a redundant (ex Sauna) position on the consumer unit I can use.
You can find DAFI on Ebay or at