Boiler or near-boiler piping is making loud banging or knocking noises, especially when starting or stopping.

Safety: Pipes may be hot; avoid direct contact.

• 1. Bleed air: Remove air from the system using purge valves and radiator bleeders.
• 2. Check pipe supports: Inspect visible piping near the Energy Kinetics boiler and secure any loose hangers or clamps.
• 3. Slow valve operation: If noise occurs when zone valves close, consider having a technician adjust flow or replace fast-closing valves with slower-acting models.