Efficiency. Every MWh you stop wasting shrinks the new boiler/heat pump you must buy. Insulation, steam and heat-recovery practices (the rest of this hub) cut the required capacity of ANY future fuel route by 10–20% — the cheapest part of the transition.
From our guide: Alternative Fuels for Industrial Heat — full context, charts and sources there.
Boilers, kilns, heat exchangers, valves and steam lines lose energy continuously. Inzonex makes patented (UK GB2508992.1) removable modular insulation — snap-fastened covers engineered per temperature tier, not generic off-the-shelf jackets: