Hi can anyone recommend an instant water heater for an ensuite hand basin. I'm after recommendations of products that people have fitted/ used that actually give a good enough flow even in the winter. I looked at some of the smaller rated heaters 4-5kw in eg screwfix and most have bad reviews saying the flow is not enough. Dont know if this is down to expectations of having a flow as good as the boiler can provide or whether they are just under powered. As the room already has an electric shower I'm looking for the smallest rated unit that fits the job well. Was thinking maybe 7.7kw Triton instaflow undersink water heater. Anyone got experience of a good instant water heater with low Kw rating then let me know. Cheers