It's hot, treated water you already paid for: fuel saving + water saving + chemical saving, typically the best-IRR steam project after traps.
From our guide: Condensate & flash-steam recovery — 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: