Heat Exchanger Descaling
Remove the primary heat exchanger and circulate a food-grade citric acid solution (5%–10%) with a dedicated pump for 2–3 hours to dissolve calcium-based scale. Avoid strong acids to prevent corrosion of metal components.
Burner Soot Removal
Gently brush carbon deposits with a soft-bristle brush, then vacuum away dust to keep burner ports unobstructed and combustion stable.
Flue Dust Cleaning
Use a long-handled brush to clean the inner walls of the flue, ensuring smooth exhaust flow and reducing back-pressure.
Step 3: System Flushing & Performance Verification
After chemical descaling, flush the piping with clean water until the discharge runs clear and tests neutral with pH paper.
Reassemble the boiler, then run a test cycle:
Flame should burn evenly with a clear blue color
Flue gas temperature should drop by approximately 5°C to 10 % compared to pre-cleaning
Safety Guidelines: Professional Handling is Essential
Shut off the gas valve and disconnect power before starting any cleaning work
Only certified technicians should handle any acid-based cleaning chemicals
After dismantling electrical or gas components, perform a leak and tightness test before restarting
Conclusion: Clean for Efficiency, Clean for Safety
Routine boiler cleaning not only restores energy efficiency but also extends equipment life and enhances operational safety. For expert cleaning services or detailed guidance, contact our technical team—we'll help your boiler run cleaner, safer, and more cost-effectively.
