
47K09 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $16.95 | Top Pick! Condition is New, 47K09 Lennox Nat Gas Burner Orifice, #42 OEM 47K09, shipping cost = $6.99 | 99.6% |
![]() | $20.99 | Condition is New, Lennox 47K09 Nat Gas Burner Orifice, No. 42, shipping cost = $5.00 | 99.8% |
![]() | $32.03 | Top Pick! Condition is New, Lennox 47K09 Nat Gas Burner Orifice Number 42, FREE SHIPPING | ![]() |
![]() | $33.41 | Condition is New, Lennox 47K09 "Nat Gas Burner Orifice "Nat Gas Burner Orifice, FREE SHIPPING | 98.6% |
![]() | $36.19 | Top Pick! Condition is New, Lennox 47K09 Nat Gas Burner Orifice Number 42, FREE SHIPPING | ![]() |

The Lennox 47K09 Nat Gas Burner Orifice is an essential component for ensuring optimal performance of your Lennox gas furnace. This orifice, specifically designed for use with Lennox 42 series burners, plays a crucial role in regulating the flow of natural gas into the burner.
The 47K09 orifice is made of high-quality, corrosion-resistant brass material, ensuring durability and reliability for years to come. Its precise machining ensures accurate gas flow rate, which is essential for maintaining consistent heating temperatures and efficient combustion.
The orifice features a threaded connection with a 3/4 inch NPT thread pattern, making it easy to install and replace. Its compact design allows it to fit seamlessly into the burner assembly, and its polished finish adds an aesthetically pleasing touch to the furnace.
This Lennox 47K09 Nat Gas Burner Orifice is engineered to meet the stringent quality standards set by Lennox, ensuring that it functions optimally and delivers consistent performance. It is designed to work with a maximum input rating of 47,000 BTUs, making it an ideal choice for larger homes or commercial spaces that require more heating capacity.
In conclusion, the Lennox 47K09 Nat Gas Burner Orifice is an essential component for maintaining the performance and efficiency of your Lennox gas furnace. Its high-quality brass construction, precise machining, and easy installation make it a reliable and cost-effective solution for regulating gas flow and ensuring consistent heating temperatures.
Lennox 47K09 Natural Gas Burner Orifice 42: A Detailed Analysis
The Lennox 47K09 natural gas burner orifice 42 is a crucial component for maintaining the optimal performance of your Lennox gas furnace. In this analysis, we will discuss the pros and cons of purchasing this part to help you make an informed decision.
Pros:1. Improved efficiency: Replacing a worn-out orifice with a new one can enhance the overall efficiency of your furnace, leading to lower energy bills and reduced environmental impact.
2. Enhanced safety: A faulty orifice can cause safety issues, such as gas leaks or malfunctioning burners. A new orifice ensures that your furnace operates safely and efficiently.
3. Longer furnace lifespan: Regularly replacing worn-out parts like the orifice can help prolong the life of your furnace, saving you from the expense of a premature replacement.
Cons:1. Cost: The Lennox 47K09 natural gas burner orifice 42 can be relatively expensive compared to other furnace parts. This cost may be a deterrent for some homeowners.
2. Installation complexity: Installing the orifice may require some level of technical expertise, potentially necessitating the hiring of a professional HVAC technician.
3. Potential for error: Improper installation or use of the incorrect orifice size can lead to suboptimal furnace performance or even damage to the system.
Conclusion:The Lennox 47K09 natural gas burner orifice 42 is an essential component for ensuring the efficient and safe operation of your Lennox gas furnace. Although it may come with a higher cost and installation complexity, the benefits of improved efficiency, enhanced safety, and prolonged furnace lifespan make it a worthwhile investment for many homeowners.
Recommendation:If you are experiencing issues with your Lennox gas furnace, such as poor heating performance or safety concerns, consider replacing the orifice with a new Lennox 47K09 natural gas burner orifice 42. Ensure that you purchase the correct part size and follow the installation instructions carefully to maximize the benefits of this investment. Alternatively, consider hiring a professional HVAC technician to assess and address any potential issues with your furnace.
Details:
Electrical outlet's. Electrical boxes. 42: nat gas burner orifice, no. Receptacles.
Lennox 47K09 nat gas burner orifice, no. And enclosures. 42, fits brand Lennox, for use with universal details. Light industrial.
specifications maxohvac:
- brand: Lennox
- mpn: 47k09
- type: Hvac Parts Heating And Cooling Parts
- country of origin: Mx
- weight: 0.0300
- length: 2.900
- width: 1.300
- features: Nat Gas Burner Orifice, No. 42, Fits Brand Lennox, For Use With U
- battery included: No
returns maxohvac:
- method: money back
- paid by: seller
- policy: returns accepted
- time: 60 days
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
seller maxohvac:
- rating: 99.8%
- city: USA
- # reviews: 1355715
shipping maxohvac:
- transit: 4-4 days
- service: standard
- type: fixed
- class: standard
payments maxohvac:
- credit card: discover
- wallet: apple-pay
- other
offer maxohvac:
- prices: $16.95–$36.19
- item condition: New
- availability: in stock
- sold #: 5
- options: ship-to-home
- started: april 19, 2026
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