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Electrification and Independent Hot Water Systems Request for Knowledge

 
Domestic Hot Water & Cylinders
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 fleecy
(@fleecy)
New Member Member
Joined: 4 hours ago
Posts: 1
Topic starter 07/07/2026 1:16 pm   [#3087]

Hi, we are slowly weaning ourselves off gas. Currently we have a standard combi boiler and radiator system. A few weeks ago we installed PV and battery. Next step is removing all the radiators and replacing with ecostrad IQ ceramic electrics. That leaves the farty elephant in the room, the combi boiler heating our hot water. Ideally, we want to replace functionality like for like. I can run a bath and the kids can be in both showers with no hot water issues. Is this a pipe (ha ha) dream when wanting to use only electricity. Is there a single electric device that does this or is it a case of independent electric heating units for the taps, showers, and baths? I saw the sunamp thermino but it seems to need a hot water (heat pump etc) source which we don't have. I have been looking at the mixergy cylinders but is there anyone out there with this sort of information. An article on total degasification of a house would be wonderful. Maybe I'll write it once I can sort out this last piece of the puzzle. Thanks



   
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Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Famed Member Moderator
Joined: 5 years ago
Posts: 1959
07/07/2026 4:20 pm  

Welcome to the forum, @fleecy.

That's an interesting set of questions, but I have to start with one of my own. Is there a particular reason why you want to replace your wet central heating with electric storage heaters rather than investigate the possibility of a heat pump? If you have a battery and inverter - even more so with solar panels as well - you certainly have the building blocks for moving to a more interesting tariff and probably reduce your average cost per kWh to a point that heat pump efficiency starts to really overshadow the cost of gas, so I'm intrigued why you'd want to move from a 90% (ish) efficient gas boiler to a 90% (ish) efficient storage heater instead of a 350% (ish) efficient heat pump.


105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
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