Re: 20 year old tech...
Maybe you should ditch the old rads and go with underfloor heating throughout at the same time as 40C is typical maximum for those?
But that adds to the cost of new builds, and also to rip & replace floors in existing properties. Which then makes the ROI even more questionable. All to keep a 'new' tech happy, when alternatives might be far better & cheaper.
Biting the hand that feeds IT
