Visible corrosion or rust streaks on or inside the boiler cabinet

Safety first: Turn off power before removing panels. Wear gloves when handling rusty metal.

• Identify moisture source: Look for active drips from piping, condensate lines, or vent joints. Repair or tighten as needed.
• Check condensate routing: Ensure condensate drains away from sensitive components and that tubing is intact.
• Dry affected areas: Wipe down and dry corroded areas. Light surface rust can be cleaned and treated with rust-inhibiting paint.

Professional help: If structural components or the heat exchanger show significant corrosion, a technician should assess safety and remaining life.