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Orifice

Orifice parts are critical components in gas and propane furnace systems, regulating fuel flow, ensuring safe operation, and maintaining efficiency. Key parts include the external pilot orifice and the burner orifice.

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Furnace Orifice & Gas System Replacement Parts

Furnace orifice parts control the flow of gas within heating systems, ensuring consistent heat output and safe operation. Propane or gas furnace orifices deliver precise fuel to burners and pilots for efficient system performance.


Key orifice components each have a specific role in the operation of your heating system. The external pilot orifice controls gas flow to the pilot light, ensuring reliable ignition of the main burner. The fan orifice plate regulates gas flow when the blower fan is running, maintaining proper combustion and system efficiency. With regular use, clogged or worn orifices can cause flame instability or uneven heating, so timely replacement is essential to maintain optimal furnace function. Burner orifices deliver fuel to the burners for uniform flame distribution, while the natural gas manifold orifice manages gas flow from the manifold to individual burners to ensure balanced heating across the furnace. Orifice rings provide precise control at connection points, supporting consistent performance, and ventor plate orifices help maintain proper venting and an efficient air-gas mixture for combustion.
At PartsHnC, we offer a wide range of orifice parts, including orifice with expansion valve assembly, burner orifice, water orifice, brass orifice, and orifice bag assembly from top brands like Rheem-Ruud, Lennox, and Honeywell.

FAQs

Are all propane orifices the same?

No, propane orifices vary in size and design to match different appliances and pressure requirements, ensuring safe and efficient fuel flow.

How do I know if my furnace orifice needs replacing?

Signs of a failing orifice include uneven heating, yellow or flickering flames, pilot light outages, or strange odors. Regular inspection can prevent costly furnace issues.

What is an external pilot orifice, and why is it important?

The external pilot orifice controls gas flow to the pilot light, ensuring reliable ignition of the main burner. Without it, your furnace may fail to start properly.

How does a burner orifice work?

The burner orifice delivers gas to the furnace burners, creating uniform flame distribution and consistent heat output throughout your home.