What instant water heater should I get?

[Alb10n]

Hi.
I've taken my immersion heater out and want to replace it with an instant hot water heater.
The unit will be placed on a wall at chest height from where the immersion heater control was sited (Horstmann economy 7 quartz)
The fuse on the fuse board says it's a 16A.
I only need it to heat water for a kitchen sink, bathroom sink & occasionally a washing machine (which heats its own water, really) which aren't too far away (Both ground floor)
Looking at heaters I am baffled as to what to get.

Can anyone point out what I should do from here?

Is the fuse good enough to use with a heater that is fitted?
What heater should I be looking for? (I think I need "unvented", what power, etc)

 

[ShaunCorbs]

Won’t get an instant electric heater on that most require 40-50 amp

 

[Ben-gee]

For a kitchen sink and basin only , a small unvented unit would suffice.
But I’m afraid you can’t fit it yourself.

 

[Ric2013]

If it were literally just for hand washing, a handwash heater directly above the basin might suffice and would run at 3kW. But bathroom electrics are a special location and not really a DIY thing.

 

[Alb10n]

Thanx for the replies and advice.

It looks like I'll need an electrician and two units putting in, one under each sink.

Definitely not something I'd try myself.
At least the scrap boiler will help with the cost

Cheers!!

 

[Alb10n]

I assume that most plumbers can do the electrical work as well as the plumbing?

 

[Ben-gee]

If they are physically close, one unit under the kitchen sink will serve both sink and basin.
10 litre is quicker to reheat, 15 litre gives you more in one go - so the choice depends on your usage pattern.
These are either 2kW or 3 kW, I use 2kW as we have hard water here, they are useful little units.