
73K38 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $24.95 | Condition is New, 73K38 Lennox Ignitor Dsi OEM 73K38, shipping cost = $8.95 | 99.7% |
![]() | $39.66 | Top Pick! Condition is New, Lennox 73K38 Ignitor DSI HVAC Controls, FREE SHIPPING | ![]() |
![]() | $49.64 | Condition is New, Lennox 73K38 Ignitor DSI, FREE SHIPPING | 98.7% |
![]() | $35.17 | Condition is New, Lennox 73K38 Genuine OEM Ignitor Electrode, shipping cost = $27.41 | 97.6% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $41.05 | Top Pick! Condition is Open box, Lennox OEM Ignitor & Flame Sensor Assy 73K38/73K3801 PSE-L39 Ref:L39 Ignitor DSI, FREE SHIPPING | 100.0% |

The Lennox 73K38 Ignitor is a crucial component of Lennox gas furnaces, designed to reliably and efficiently ignite the gas burners. This ignitor is engineered with advanced technology to ensure consistent performance and long-lasting operation.
The 73K38 Ignitor features a quartz igniter tip, which is known for its exceptional durability and resistance to wear and tear. The igniter tip is surrounded by a ceramic insulator, which maintains a consistent temperature to ensure optimal ignition. The ignitor also includes a high-voltage ignition transformer, which generates the necessary electrical charge to ignite the gas.
This ignitor is designed for easy installation and replacement, with a quick-connect design that allows for simple removal and attachment to the furnace. The ignitor also includes a safety feature, a built-in thermal limit switch, which shuts off the igniter if it overheats, adding an extra layer of safety to your furnace system.
The Lennox 73K38 Ignitor is designed to work seamlessly with Lennox gas furnaces, providing reliable and consistent ignition for optimal heating performance. With its advanced technology and durable design, this ignitor is an essential component for maintaining the efficiency and effectiveness of your furnace system.
In summary, the Lennox 73K38 Ignitor is a vital component for Lennox gas furnaces, featuring a durable quartz igniter tip, ceramic insulator, and high-voltage ignition transformer for reliable and efficient ignition. Its quick-connect design and built-in thermal limit switch make it easy to install and replace while adding an extra layer of safety to your furnace system.
Pros and Cons of Buying a Lennox 73k38 Ignitor
The Lennox 73k38 ignitor is a crucial component of Lennox furnaces, responsible for generating a spark to ignite the gas. Like any other part, it has its advantages and disadvantages. In this analysis, we will discuss these factors to help you make an informed decision regarding its purchase.
Pros:1. Enhanced Safety: The Lennox 73k38 ignitor uses a hot surface igniter (HSI) technology, which provides better safety compared to the older spark igniter systems. This design eliminates the need for a pilot flame, reducing the risk of carbon monoxide leaks and gas wastage.
2. Energy Efficiency: HSI technology also leads to increased energy efficiency since the igniter only turns on when the furnace is calling for heat. This can result in lower energy bills and a reduction in greenhouse gas emissions.
3. Improved Comfort: The consistent and reliable ignition process ensures that the furnace starts up quickly and maintains a more even temperature throughout the house, leading to improved comfort during the colder months.
4. Long Lifespan: Lennox ignitors are known for their durability and long lifespan, with some users reporting up to 15 years of service without replacement.
Cons:1. Initial Cost: The Lennox 73k38 ignitor, being a high-performance and advanced component, comes with a higher price tag compared to traditional spark igniter systems.
2. Installation Complexity: Installing an HSI ignitor may require the expertise of a professional HVAC technician due to its more intricate design and different installation process compared to the simpler spark igniter systems.
3. Potential Compatibility Issues: Ensure your Lennox furnace is compatible with the Lennox 73k38 ignitor before making a purchase. In some cases, specific models may require different ignitor types.
Conclusion:The Lennox 73k38 ignitor offers several advantages, including enhanced safety, improved energy efficiency, and increased comfort. However, its higher initial cost and potential installation complexity are factors to consider before making a purchase. Ultimately, the decision to buy this ignitor depends on your specific needs, budget, and the compatibility with your Lennox furnace.
Recommendation:If you prioritize safety, energy efficiency, and comfort, and are willing to invest in a high-performance ignitor for your Lennox furnace, then the Lennox 73k38 ignitor could be a worthwhile investment. However, it's essential to weigh the pros and cons carefully and consider consulting a professional HVAC technician for expert advice before making a final decision.
Details:
Electrical boxes. And enclosures. Receptacles. Electrical outlet's.
Light industrial.
specifications maxohvac:
- brand: Lennox
- mpn: 73k38
- type: Hvacr And Appliance Controls Cooling Equipment Relays
- custom bundle: No
- country/region of manufacture: Mx
- weight: 0.3000
- length: 1.000
- features: Direct Spark Igniter, Product Type Direct Spark Igniter, Compatib
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
shipping maxohvac:
- class: standard
- transit: 5-5 days
- service: standard
- type: fixed
offer maxohvac:
- options: ship-to-home
- availability: in stock
- sold #: 15
- in stock #: 5
- prices: $24.95–$49.64
- item condition:
- New
- Open box
- started: july 5, 2025
returns maxohvac:
- paid by: seller
- time: 60 days
- policy: returns accepted
- method: money back
seller maxohvac:
- city: USA
- rating: 99.6%
- # reviews: 1237933
payments maxohvac:
- other
- credit card: diners-club
- wallet: apple-pay
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