UK is almost exclusively hot water radiators heated by natural gas boilers (or oil boilers in rural areas not on the gas grid). There is a push by government t

UK is almost exclusively hot water radiators heated by natural gas boilers (or oil boilers in rural areas not on the gas grid). There is a push by government to switch to electric heat pumps driving hot water into larger, cooler radiators (as this is more efficient for the heat pumps), backed by a £7500 grant for the pump and installation (with limited take-up).