Lennox 33J95 - ORIFICE
Lennox 33J95 – (33J9501) Gas Burner Orifice – Full Product Description
The Lennox 33J95 Orifice is a factory-authorized OEM component designed to control and regulate the flow of gas into the burner assembly of Lennox gas furnaces and heating units. This orifice plays a critical role in combustion efficiency, system performance, and overall operational safety.
Product Overview:
- Part Number: 33J95
- Lennox Catalog Number: 33J9501
- Component Type: Gas Burner Orifice
- Material: Precision-machined brass
- Thread Type: Standard NPT (National Pipe Thread)
- Function: Metered gas delivery for correct air-to-fuel ratio
Functionality & Purpose:
This orifice meters the volume of fuel that enters the burner system, helping achieve the optimal combustion mix. It ensures the correct BTU output by delivering a precisely calibrated amount of natural gas or liquid propane, depending on the furnace configuration. An incorrect orifice size or material can lead to poor combustion, flame rollout, carbon buildup, reduced efficiency, or even unsafe operation. The Lennox 33J95 maintains strict tolerances to eliminate these issues.
Key Features:
- OEM Certified for Lennox Units: Ensures 100% fit, compatibility, and performance when used with Lennox-approved systems.
- Precision Bore Calibration: Maintains exact orifice sizing for accurate gas flow control, critical to proper ignition and flame characteristics.
- Durable Brass Construction: Resists corrosion, pitting, and deformation over time, especially when exposed to fluctuating temperatures and fuel conditions.
- Threaded for Secure Installation: Easy to thread into orifice holders or manifolds without leaks or loosening under thermal cycling.
- Supports Both Natural Gas & LP Conversions: When applicable, suitable for systems undergoing certified field conversions with the appropriate kits and guidance.
Applications:
- Used in Lennox residential and light commercial gas furnaces
- Common in direct and induced draft systems
- Supports fine-tuning of gas supply during furnace calibration
- Essential in fuel-type conversions (natural gas to LP or vice versa), when permitted by manufacturer instructions
Benefits:
- Promotes stable ignition and clean combustion
- Enhances energy efficiency and system lifespan
- Reduces soot buildup, emissions, and burner maintenance
- Protects the integrity of the burner assembly and heat exchanger
- Restores OEM performance in repair and replacement scenarios
Installation Notes:
- Professional Installation Required: For proper safety and performance, orifice replacement or conversion must be done by a qualified HVAC technician.
- Model Verification: Ensure compatibility with your furnace model by referencing the unit's service manual or contacting Lennox support.
- Pressure Adjustment May Be Required: After installation, gas pressure and input must be checked and adjusted in accordance with factory specs.
The Lennox 33J95 Orifice is not just a small fitting—it’s a key precision component that ensures your furnace operates safely, efficiently, and to its full design potential.
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| Package Quantity | 1 Item |
|---|---|
| Item Returns | This item can be returned |
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