Help! Don't know what to choose.

[Jonathangolf]

So, I have bought a 3-bed semi and in the middle of renovating it. In the process we have removed the gas supply and going all electric.
We have radiators sorted, but the thing we are struggling with, is hot water for bath shower, kitchen and downstairs toilet?

Would it be worth having a separate instantaneous heater for the kitchen, bathroom, and downstairs toilet?

Bathroom: https://www.elementshop.co.uk/stieb...KFXFXq9ggQDnz6yHGMQ-Q1LxTne3MnXwaArQ8EALw_wcB

Kitchen: https://www.boilersandtaps.co.uk/in...neous-inline-water-heater-9.6 kw-thermostatic

Downstairs toilet: Redring RP1 Powerstream 9.5kW Instant Water Heater - https://www.boilersandtaps.co.uk/instant-hot-water-boilers/electric-water-heaters/redring-rp1-powerstream-9.5kw-instant-water-heater


Or would there be a better option out there for us?

 

[ShaunCorbs]

120l - 150l unvented

Have to spoke to your sparks as two of them is 100 amps which is over your incoming supply

 

[Murdoch]

Why are you removing gas and going electric?

 

[Murdoch]

Have to spoke to your sparks as two of them is 100 amps which is over your incoming supply

And your main fuse is probably only 60A

 

[ShaunCorbs]

Why are you removing gas and going electric?

Haven’t you heard gas is going next millennium

 

[cjg]

may be in 10yrs, it will not happen over night,

 

[WC1]

It will happen as soon as people can be convinced it's happening.

 

[Basher]

Would it be worth having a separate instantaneous heater for the kitchen, bathroom, and downstairs toilet?

Bathroom: https://www.elementshop.co.uk/stieb...KFXFXq9ggQDnz6yHGMQ-Q1LxTne3MnXwaArQ8EALw_wcB

Your chosen heater here is 3-phase. It's unlikely you have a 3-phase supply or metering, and the cost of upgrading could be typically £3.5k to £5.5k. But that might then give you a chance of simultaneously running all the loads you describe.

For me, as per Shaun, an unvented hot water storage tank would be the way to go.

At least from my supplier, a kilowatt of heat from my gas boiler is approx one-fifth the price of a kilowatt of electricity, so I hope you have done the sums!

 

[gmartine]

You say you've sorted the radiators but how are you heating your home?

 

[John.g]

So, I have bought a 3-bed semi and in the middle of renovating it. In the process we have removed the gas supply and going all electric.
We have radiators sorted, but the thing we are struggling with, is hot water for bath shower, kitchen and downstairs toilet?

Would it be worth having a separate instantaneous heater for the kitchen, bathroom, and downstairs toilet?

Bathroom: https://www.elementshop.co.uk/stieb...KFXFXq9ggQDnz6yHGMQ-Q1LxTne3MnXwaArQ8EALw_wcB

Kitchen: https://www.boilersandtaps.co.uk/instant-hot-water-boilers/electric-water-heaters/hyco-aquila-instantaneous-inline-water-heater-9.6 kw-thermostatic

Downstairs toilet: Redring RP1 Powerstream 9.5kW Instant Water Heater - https://www.boilersandtaps.co.uk/instant-hot-water-boilers/electric-water-heaters/redring-rp1-powerstream-9.5kw-instant-water-heater


Or would there be a better option out there for us?

Since you are renovating your house and will be insulating it well, consider a air to water heat pump, a 15kw unit should be more than enough and its ~ 3.5/4kw compressor will only require 17 to 20 amps single phase. You should run it with as low a temp as possible, say 40/45C to give a reasonable COP, it can also heat your water to acceptable levels and you can just boost the whole cylinder once/week to 60C with a electric immersion for legionella protection, it should reduce your ( all) electric bill options to ~ 30 to 40%.