Nordyne Intertherm 661049 Natural Gas Orifice

Product Description

The NORDYNE INTERTHERM 661049 is a natural gas orifice designed for use in gas-fired heating equipment. The orifice meters the flow of natural gas from the manifold into the burner, controlling combustion volume and flame characteristics. It is a small but critical component in the gas train — a mismatched or worn orifice directly affects burner performance, CO output, and efficiency. Licensed HVAC technicians and gas appliance service professionals handle replacement of this part during burner service or fuel-type conversion work.

This orifice is suited for residential and light-commercial gas furnaces and heating units where natural gas is the fuel source. It is installed at the burner orifice spud location on the manifold assembly. Replacement is commonly performed during annual maintenance, after a failed combustion analysis, or when converting equipment between fuel types. Always verify the orifice sizing matches the appliance rating plate and local gas supply pressure before installation.

Key Features

• Calibrated for natural gas fuel type
• Direct OEM replacement part for NORDYNE INTERTHERM equipment
• Precision-drilled orifice opening for consistent gas metering
• Designed to maintain proper burner flame and combustion efficiency

Compatibility

Designed as an OEM-style replacement natural gas orifice for NORDYNE INTERTHERM gas-fired heating equipment. Consult the appliance model documentation or NORDYNE parts reference to confirm fitment for a specific unit.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified gas appliance service professional in accordance with local codes and the appliance manufacturer service manual. Shut off the gas supply and disconnect electrical power to the unit before removing or installing any gas train components. Use the correct wrench size to avoid damaging the orifice spud threads, and verify there are no gas leaks at all connections after restoring supply. Do not substitute a different orifice drill size — orifice sizing is specific to fuel type, manifold pressure, and appliance BTU rating.

Technical Specifications

• Fuel Type: Natural Gas

Standard Information

• Brand: NORDYNE INTERTHERM
• Manufacturer Part Number: 661049