Btstil Instant Water Heater, 3000W Electric Tankless Fast Heating Water Heater with with LED Digital Display and Touch Button for Kitchen in-Line Sinks, Under Sink, Showers (White)

Great quality

On the slowest trickle this was even luke warm, cheap but no good,

Heater not really man enough to heat the water unless the the flow is very low. Would nt buy.

If you don't have an existing hot water supply this really won't be any use to you. In my case my kitchen tap is some distance from my boiler. I've installed this on the hot water line under my kitchen sink so I now have instant water hot enough to wash a few items of rinse hands etc if the tap is only half turned on. If I need to fill a bowl or a bucket then as soon as the flow from my boiler reaches the tap I can increase the flow to full.I certainly wouldn't recommend anyone to put this on the cold water supply and expect it to produce a full flow at any sort of useful temperature.For my purposes though on the hot line it's perfect and highly recommended if you just need instant hot instead of waiting and waiting for the main boiler supply

for it to heat up you need to close the valve almost completely.