Re: 20 year old tech...
"Besides, we're all supposed to be switching to hydrogen for home heating to meet global warming commitments so we might as well get on with it."
This is actually an issue. I was looking at this because I was thinking of replacing the boiler. Your options are
1) heat pump. Very efficient but can only heat to 45 degrees. So you'll need to treble your radiator estate at least, I estimate (because heat transfer is dependent on the delta T, so 40-20 versus 80-20).
2) hydrogen. This appears to be quite a lot less efficient, so we would need a LOT more electricity to run them. Better hope that fusion power comes on-stream in the next 15 years.
Biting the hand that feeds IT
