Lochinvar & A.O. Smith 100109675 Flue Baffle Assembly

The Lochinvar & A.O. Smith 100109675 Flue Baffle Assembly is a critical internal component engineered for high-efficiency commercial boilers and water heaters. As a veteran technician knows, the flue baffle assembly is essential for optimizing heat transfer by slowing down the velocity of combustion gases, allowing more dwell time within the heat exchanger. This OEM Lochinvar part (also listed across the A.O. Smith replacement parts catalog) is built to withstand high-temperature environments, preventing premature thermal stress on the heat exchanger while maximizing thermal efficiency. Utilizing a genuine 100109675 baffle ensures that your system maintains the proper draft and combustion characteristics required for peak performance. This assembly is a direct boiler flue baffle replacement for various commercial hydronic and hot water applications, ensuring a precise fit that generic alternatives often fail to provide. When performing a teardown or routine maintenance, inspect the existing baffle for warping or heavy scale buildup, as a compromised baffle leads to increased fuel consumption and elevated exhaust temperatures.

• Enhanced Thermal Efficiency: Engineered to optimize gas dwell time, maximizing heat transfer to the water.
• OEM Precision Fit: Designed specifically for Lochinvar and A.O. Smith commercial units to maintain factory combustion specs.
• Durable Construction: High-grade materials resist oxidation and warping in constant high-heat conditions.
• Exhaust Regulation: Helps stabilize flue gas velocity to ensure consistent draft and system safety.

When should the flue baffle be replaced?
Inspect the 100109675 baffle during annual service. If you notice signs of severe corrosion, thinning metal, or structural warping that restricts flue gas flow, replacement is required to maintain efficiency.

Is this part compatible with discontinued A.O. Smith models?
Yes, this 100109675 Flue Baffle Assembly is the current manufacturer-recommended replacement for several older part numbers, including the 9004031005 assembly. Always verify the serial number before installation.

How does this baffle affect boiler performance?
A properly seated commercial boiler baffle forces the hot gases to contact the heat exchanger surfaces more effectively. Without it, heat "short-circuits" up the chimney, resulting in high utility costs and potential damage to the venting system.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.