Answering the search need for reliable burner assemblies, this guide highlights five natural gas burner components that fit common gas stoves and fireplaces. These selections are best for homeowners and DIY enthusiasts seeking direct replacements, straightforward installation, and durable performance. Each product is evaluated for compatibility, ease of use, and value, with practical notes on ideal buyers. A quick comparison table in this introduction summarizes key details to help you choose faster.
| Product | Best For | Notes |
|---|---|---|
| AO Smith 100112342 | Professional kitchens or home stoves needing final burner assembly | Standard 16″ NAT, #37 orifice |
| Burner Assembly for Natural Gas (Smith) | General replacement on natural gas stoves | Natural Gas NG type |
| AO Smith 100187931 | Stoves requiring 16″ final burner with #34 orifice | Standard NAT, #34 orifice |
| 10002264 Natural Gas 3 Way Pilot Assembly | Fireplace and stove pilots needing NG configuration | Includes thermopile/thermocouple components |
| Lochinvar 100281540 Burner Assembly | 75-gallon cast iron tanks and heavy-duty NG burners | Natural Gas burner assembly for large tanks |
AO Smith 100112342 Final Burner Assembly, NAT, 16″ (#37 Orifice)
The AO Smith 100112342 is a final burner assembly for natural gas applications, designed for 16-inch configurations with a #37 orifice. This unit is tailored for stoves that require a precise gas-to-air mix for even flame distribution. It is best for replacement on compatible AO Smith or similarly designed gas ranges where the final burner assembly is a common wear element.
Best for: Home cooks and professionals replacing a worn final burner in a standard 16″ NAT setup. This part is chosen for its compatibility with traditional AO Smith ovens and gas ranges that use the #37 orifice size, aiding predictable flame performance.
Limitation: Confirm the exact burner length and orifice size on your current system before purchase to ensure a perfect fit, as mismatches can affect flame stability.
Burner Assembly for Natural Gas (Smith)
This replacement burner assembly is labeled for natural gas applications and described as a general replacement part. It is a practical choice when a straightforward swap is needed to restore flame reliability on compatible NG stoves or fireplaces, with emphasis on standard natural gas operation.
Best for: Do-it-yourself replacements on natural gas stoves where the primary goal is to restore standard burner function without specialty gas conversions.
Caution: Verify compatibility with your model’s burner diameter and mounting configuration; incorrect fit can require additional bracket or ducting adjustments.
AO Smith 100187931 Final Burner Assembly, NAT, 16″ (#34 Orifice)
The AO Smith 100187931 features a 16-inch final burner assembly for natural gas with a #34 orifice. This part is suitable for stoves requiring a slightly different orifice than the #37 variant, offering a balance between gas flow and flame stability for consistent cooking performance.
Best for: Applications where your existing system uses a #34 orifice and a matching mounting protocol. It’s a solid upgrade for reliability in mid-sized NAT configurations.
Limitation: Double-check the orifice size and the burner’s inlet connections to avoid mismatches that could affect ignition or flame height.
10002264 Natural Gas 3 Way Pilot Assembly (Majestic, Temco, Vermont Castings, HHT, Dutchwest, Monessen)
This 3-way pilot assembly is designed for natural gas fireplaces and stoves, including Majestic, Temco, Vermont Castings, HHT, Dutchwest, and Monessen models. It includes a thermocouple/thermopile setup and is adaptable to propane by nozzle change. The kit supports a turnkey pilot solution with pre-installed components for NG operation.
Best for: Homeowners updating fireplace pilots who need a complete NG pilot assembly with integrated sensors for stable ignition and operation.
Caution: Ensure the model compatibility list matches your specific fireplace or stove model; incorrect pairing can affect ignition reliability and safety shutoffs.
Lochinvar 100281540 Burner Assembly – Natural Gas (75 Gallon Cast Iron Tank)
The Lochinvar 100281540 burner assembly is designed for natural gas use in large 75-gallon cast iron tank systems. It is a heavy-duty option intended for high-capacity applications, emphasizing durability and consistent NG flame delivery in expansive units.
Best for: Users maintaining industrial-grade or large residential water heating or heating systems that use big cast iron tanks and require robust burner assemblies.
Limitation: This section targets larger fuel systems; ensure your tank size and gas supply align with the unit’s specifications to avoid performance issues.
Buying Guide: Key Considerations For Burner Assemblies
- Fuel type and compatibility: Confirm the part is truly for natural gas (NG) and matches your appliance’s gas type and pressure requirements.
- Orifice size and burner length: Match the orifice size (#37, #34, etc.) and the burner length to your existing layout for proper flame control and ignition.
- Model compatibility: Use the model and brand guidance to ensure mounting points, connector types, and gas fittings align with your unit.
- Installation ease: Consider parts that come with clear instructions and minimal need for extra adapters or modifications.
- Safety features: Seek assemblies that preserve or improve ignition reliability and flame stability to support safe operation.
- Application scope: Differentiate between stove burners and fireplace pilots to avoid purchasing a component for the wrong appliance.
- Durability and materials: For high-use or large-tank systems, prioritize heavy-duty metals and robust corrosion resistance.
Frequently Asked Questions
- What is the purpose of the burner assembly in a natural gas appliance?
It channels gas and air to create a controlled flame for cooking or heating. - How do I know which orifice size to choose?
Check the existing burner orifice on your current part or consult the appliance’s service manual. - Can I replace a burner assembly without professional help?
Many homeowners can replace straightforward NG burner assemblies, but for fireplaces or complex systems, consider a licensed technician. - Is it safe to mix parts from different brands?
It’s best to match parts to your model and use manufacturer-recommended components to maintain safety and efficiency. - What signs indicate a faulty burner assembly?
Irregular flame, uneven heating, gas smell, or ignition failures warrant inspection and possible replacement. - Do these parts work with propane?
Some parts include notes on propane conversion; verify nozzle compatibility before switching fuel types.