Boiler operates but flue gases or exhaust smell are noticeable in the boiler room

Safety first: Turn off power and gas. Flue gases contain carbon monoxide, which is deadly. Do not operate the boiler until the issue is resolved.

• Inspect vent joints: Check all vent pipe joints from the Utica boiler to the termination. Look for gaps, missing cement, or loose clamps.
• Check boiler collar: Inspect the connection where the vent attaches to the boiler. Ensure gaskets are intact and the clamp is tight.
• Look for cracks: Examine PVC or CPVC venting for cracks or discoloration from overheating.
• Do not seal with tape only: Vent repairs must use approved materials and methods. Temporary tape fixes are unsafe.
• Call a professional: Flue gas leaks must be corrected by a qualified technician following Utica and code requirements.