Resideo Q345A1305 Igniter-Burner

The Resideo Q345A1305 Igniter-Burner is a critical replacement component designed for intermittent pilot ignition systems in high-efficiency natural gas furnaces and boilers. This non-primary aerated combination pilot burner and igniter features a single tip style with a front-facing orientation, ensuring precise flame rectification and consistent main burner ignition. Engineered with a BCR-18 0.018" orifice and a 1/4" compression fitting, this unit provides the exact gas flow required for stable pilot flame performance. The assembly comes standard with a B style mounting bracket, but includes a conversion kit with screws to adapt the unit to an A style bracket configuration, offering versatile field compatibility. Whether you are servicing a standing pilot conversion or a modern HVAC electronic ignition system, the Q345A1305 (functionally identical to Q345A1305/U) maintains system safety and BTU output integrity by providing reliable Honeywell Home furnace part replacement standards.

• Direct Fit Compatibility: Includes hardware to convert from a Type B to a Type A mounting bracket for universal service applications.
• Optimized Flame Pattern: The single-tip front-facing design ensures the pilot flame is positioned correctly for rapid main burner crossover.
• Precise Gas Metering: Features a factory-installed BCR-18 orifice (0.018") rated specifically for Natural Gas applications.
• Durable Construction: Built to withstand high combustion chamber temperatures without warping or compromising the ignition electrode gap.

Can the Q345A1305 be used with Liquid Propane (LP) systems?

As shipped, this model is configured with a BCR-18 orifice for Natural Gas. For LP applications, the orifice must be swapped to the manufacturer-specified LP size to ensure safe operation and prevent carboning.

What is the difference between the Q345A1305 and the Q345A1305/U?

There is no functional difference. The "/U" suffix denotes a universal technician-ready packaging, but the technical specifications and hardware are identical.

Is the mounting hardware included for various furnace brands?

Yes, the package includes a special mounting bracket and screws to facilitate the conversion between B and A bracket styles, covering a wide range of OEM furnace footprints.

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.