From John Kitchen, Kettering, Northamptonshire, UK
S. W. Shaw calculates that around 9 million UK homes may have converted to using heat pumps in the next 15 years. However, millions of homes here are Victorian and broadly aren’t suitable for . Beyond those 9 million conversions, to really make progress towards net-zero housing, we may have to bulldoze all Victorian houses (Letters, 28 October).
