boiler efficiency tuning 3

https://burnersystemmaintenancemedia.sagecurrent.com/posts/essential-burner-system-maintenance-for-commercial-boilers

I've been tweaking the air-to-fuel ratio on my boiler to hit that sweet spot for maximum efficiency. It's amazing how a small adjustment can cut down on fuel waste and lower my heating bills. I check the flue gas temperature regularly with a simple thermometer; getting that to drop means I'm pulling more heat out of the combustion. It takes some patience, but seeing the steady improvement in performance makes it worthwhile.