Boiler cabinet or nearby area is unusually hot to the touch, even when not firing.

Safety first: Turn off power if you suspect overheating or smell burning. Do not cover or block the boiler.

• Check clearances: Ensure the Laars boiler has the minimum clearances specified in the manual on all sides.
• Inspect cabinet openings: Do not block louvers or openings on the boiler casing.
• Verify pump operation mode: Some controls can run pumps continuously; adjust settings if unnecessary.

When to call a professional: Unusual heat may indicate internal issues that require inspection.