For decades, the gas boiler has been the default heating system in UK homes. Despite growing interest in low‑carbon heating, gas remains the dominant fuel for domestic heating. According to the Energy Saving Trust, around 85 per cent of UK homes are still heated by gas boilers, reflecting decades of gas network expansion.
But rising energy costs, tighter climate targets and the ageing state of the nation’s boiler stock all mean more households are questioning whether like‑for‑like replacement still makes sense.
