The whole anthropogenic climate change malarkey is little more than an excuse to hit us with tax.
X kW in in gas = y Kw out in heat. Very little difference between the best and the worst you can currently buy. The difference is mainly in the quality of the boiler, not in the performance.
X kW in in gas = y Kw out in heat. Very little difference between the best and the worst you can currently buy. The difference is mainly in the quality of the boiler, not in the performance.