Boiler alternatives

total rubbish

Compared to a modern gas boiler, probably this. But it depends on what you are measuring - it will, right now, cost you much more to use, and will be slower at generating heat, and you probably have to have a storage tank with it unless you shower for thirty seconds or less in the morning. But if you are measuring green creds then obvs its going to be better than burning gas or whatever, especially if you can power it with renewable energy.

Crap compared to a new combi and will cost you a ton more to run. As someone thar works in the industry I dont think electric boilers can compare to gas boilers, air source are expensive to install, require a lot of upgrades and expensive to run. Right now at this stage with the cost of gas and leccy, gas is cheaper no matter where its coming from. You could fit a solar panel and have the electricity coming from it to heat your water in an unvented cylinder, the payback from the grid now makes it worthless.

I'm also buying a flat with a trashed gas combi boiler and have looked into it a bit, as I've really like to move away from gas too.

My understanding is that gas is still the most cost and energy efficient, but electric boilers may not be a lot more expensive for small flats. You might find that costing out the expected use scenarios might make electric attractive maybe?

I've disregarded air source heat pumps because everything I read about them is unconvincing or bad, especially the fact they're noisy. I would like to be wrong on that obviously.

One thing I'm interested in, is hydrogen ready gas boilers. Bosch have demonstrated that current gas boiler tech can be made hydrogen ready, but they're unlikely to be ready for a while, and then hydrogen will be a 5-10 years away on top, if at all.