Laars Heating Systems L0032900 Orifice

The Laars Heating Systems L0032900 Orifice is a high-precision component engineered specifically for liquid propane (LP) gas applications in residential and commercial boilers. This 0/5000Ft LP gas orifice is essential for maintaining a stoichiometric air-fuel ratio at elevations ranging from sea level up to 5,000 feet. As a veteran-grade Laars replacement part, it ensures consistent burner pressure and steady BTU output for critical hydronic heating systems. Technical compatibility includes a broad range of legacy and modern units such as the Laars Mini-Therm JVS, JVT, and JVH series, as well as Mighty Therm models. Replacing a clogged or worn boiler burner orifice with this genuine OEM-spec component prevents incomplete combustion and carbon soot buildup, which are common causes of heat exchanger failure. For technicians managing high-altitude installs, using the correct propane gas orifice is non-negotiable to ensure the pilot and main burner assemblies operate within manufacturer-specified pressure tolerances.

Key Benefits

• Altitude-Rated Performance: Precision-drilled to maintain optimal gas flow and manifold pressure for installations from 0 to 5,000 feet.
• OEM Compatibility: Designed for seamless integration with Laars series boilers including Mini-Therm and Mighty Therm HH, PH, and VW units.
• Fuel Efficiency: Ensures accurate LP gas metering to optimize combustion efficiency and reduce fuel waste in residential and commercial settings.
• Durable Construction: Manufactured by Laars Heating Systems to withstand the high-temperature environment of the burner tray and manifold assembly.

Common Questions

How do I verify if this orifice is right for my altitude?
This specific part is engineered for any location between sea level and 5,000 feet. If your job site is above 5,000 feet, you must source a high-altitude derate kit to prevent over-firing and potential burner damage.

Can I use the L0032900 for a natural gas to propane conversion?
This orifice is a core component of an LP gas conversion, but you must also adjust the gas valve regulator and potentially replace other burner components to meet the full Laars technical specifications for propane operation.

What symptom indicates a failing burner orifice?
The most common signs are yellow flames, soot accumulation on the heat exchanger, or uneven flame distribution across the burner rack. Replacing the L0032900 LP Gas Orifice restores the sharp, blue flame required for clean operation.

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.