Lochinvar & A.O. Smith 100346612 Burner Assembly

Lochinvar & A.O. Smith 100346612 Burner Assembly

  • $381.81


When you are dealing with a combustion issue in the field, sourcing a genuine Lochinvar & A.O. Smith 100346612 Burner Assembly is the only way to ensure the system returns to its original factory specifications. This 16-inch ultra low NOx burner assembly is engineered for high-efficiency water heaters and boilers, specifically designed to meet stringent emission standards while maintaining peak thermal performance. It serves as the 100346612 direct replacement for 100093967, transitioning the unit to an updated, high-performance configuration.

This OEM burner assembly features a robust stainless steel and aluminized steel construction to withstand high-temperature cycling. It typically ships as a complete kit, often including a 1-inch gas valve and the necessary TCO (Thermal Cut-Off) sensors to ensure proper safety integration with the existing control board. For contractors, installing a genuine replacement burner like the 100346612 eliminates the risk of flame instability or premature component failure associated with non-standard parts, ensuring the NG water heater burner operates with the precise fuel-to-air ratio required for ultra-low emission compliance.

Key Benefits
  • Precise Compatibility: Confirmed direct replacement for 100093967, simplifying the swap-out process for technicians.
  • Environmental Compliance: Engineered with ultra low NOx technology to reduce nitrogen oxide emissions without sacrificing heat output.
  • Full Assembly Integration: Often includes the 1-inch gas valve and integrated sensors for a comprehensive HVACR burner repair.
  • Durable Construction: Built with high-grade materials to resist corrosion and thermal fatigue in demanding residential and commercial environments.
Common Questions

Is the 100346612 compatible with older 100093967 units?
Yes, the 100346612 is the official manufacturer-designated substitution for the older 100093967 model. While it may have slight physical updates, it is functionally equivalent and designed for the same 16-inch burner housing.

Does this assembly include the gas valve?
In most factory configurations, this part number is a complete "K burner assembly" that includes both the 16-inch burner and the matched 1-inch gas valve control for a seamless install.

Why is it important to use a serial number for verification?
Burner assemblies are highly specific to the unit's production date and BTU rating. Always verify the model and serial number to ensure the burner plate diameter and valve orifice match your specific equipment.

This item is not eligible for free shipping.

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.

QUESTIONS & ANSWERS

Ask a Question
  • Will this burner work in a gur-40 400 Serial number 1705104801401

    You are correct but this is out of stock and back order lead time is at least 3-4 weeks out (May be longer). You can please place an order online if okay with the back order.

  • I want to confirm a few things: 1. Please confirm that this burner assembly works for AO Smith Water Heater GNR 50 200 with serial number 1238T471388. 2. Please confirm that this has the temperature sensor as well that plugs into the honeywell controller.

    100093968 is the one for 1238T471388. This does have a sensor with a 2wire Molex plug. Here is the link of this part, please check if this is what you are looking for:

    https://www.gsistore.com/products/lochinvar-a-o-smith-100093968-burner

  • Does this assembly include both the burner and the gas valve - as shown in the picture?

    YES EVERYTHING SHOWN IN THE PICTURES COMES WITH THISu00a0ITEM.

  • Does this fit a AO Smith GUC 50 400

    We will need the serial numbers to check.