Nordyne 661029R Orifice

The Nordyne 661029R is a precision-engineered #29 NG Main Burner Orifice specifically designed for Natural Gas furnace applications. As a genuine OEM replacement part, it ensures the exact BTU output and atmospheric mixing required to maintain the combustion integrity of the burner assembly. This orifice features a fixed #29 drill size, critical for regulating fuel flow in several Intertherm, Miller, and Nordyne gas furnace series, including the M1, MGH, and MG1E models. For contractors servicing mobile home or residential split systems, using a verified furnace burner orifice is essential to prevent delayed ignition or soot buildup caused by improper fuel-to-air ratios. The 661029R orifice replaces legacy Nordyne part 660836, providing a seamless fit for the manifold and ensuring that the manifold pressure matches the manufacturer's performance curve for safe and efficient heating cycles.

• OEM Precision: Guaranteed #29 drill size accuracy for consistent BTU delivery.
• Broad Compatibility: Fits common Intertherm and Miller furnace models including M1GH, MGHA, and MGBB series.
• Direct Supercession: Directly replaces outdated Nordyne part number 660836.
• Optimal Combustion: Designed to maintain the correct venturi vacuum for a stable natural gas burner flame.

• Can this orifice be used for Propane (LP) conversions? No, the 661029R is calibrated specifically for Natural Gas; LP conversions require a different drill size.
• How do I resolve a weak yellow burner flame? A yellow flame often indicates a partial blockage or incorrect gas orifice size; replacing a fouled or incorrect orifice with a genuine #29 NG orifice can restore proper blue flame combustion.
• Is this part compatible with my specific furnace model? This #29 NG Main Burner Orifice is the standard specification for many 056-input models; always verify your unit's data plate before installation.

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.