Description
Lochinvar & A.O. Smith 100355131 Burner Assembly Overview
The Lochinvar & A.O. Smith 100355131 is a genuine OEM replacement burner assembly engineered for precise, efficient combustion in compatible water heater and boiler applications. Designed to exact factory specifications, this 16-inch assembly delivers a rated input of 40,000 BTU/hr at a gas manifold pressure of 4″ W.C., ensuring consistent flame performance and reliable heat output.
Key Features
- Genuine OEM Lochinvar & A.O. Smith replacement part
- 16″ burner assembly for direct factory-fit installation
- Rated input: 40,000 BTU/hr (40K BTU)
- Operating gas manifold pressure: 4″ W.C.
- Engineered for consistent, stable combustion performance
- Maintains original equipment efficiency and safety standards
- Direct drop-in replacement — no modifications required
Application
This burner assembly is intended for use in Lochinvar and A.O. Smith water heaters and boiler units that require a 16-inch, 40K BTU burner operating at 4″ W.C. gas pressure. Always verify compatibility with your specific model number before installation.
Why Choose Genuine OEM Parts?
Using genuine Lochinvar & A.O. Smith replacement components ensures your equipment operates at peak efficiency, maintains warranty compliance, and meets original safety certifications. Aftermarket substitutes may compromise combustion quality, system reliability, and code compliance.
Specifications
- SKU: 100355131
- Brand: Lochinvar & A.O. Smith
- Burner Length: 16″
- BTU Input: 40,000 BTU/hr
- Gas Manifold Pressure: 4″ W.C.
- Part Type: Burner Assembly







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