Purchase the Lennox 52W29 Furnace Flame Sensor Kit LB-74940A from Us and Save!
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- We sell a brand new genuine Lennox OEM furnace Flame Sensor Kit Part number LB-74940A. This flame sensor also has part number 52W29 on the sealed flame sensor bag.
- The LB-74940A flame sensor kit comes in a factory sealed parts bag.
- The 52W29 flame sensors overall length is 4 7/8″ The metal tip is 2 3/4″ long and the white porcelain is 1 1/2″ long.
- FYI: The most common problem that we see when a flames sensor is not working properly is: The furnace main gas burners ignite, the main gas burners stay on for only 8 to 10 seconds, then the burners shut right back off. We have a gas furnace flame sensor troubleshooting page. Please click here if you would like to see our gas furnace flame sensor troubleshooting page.
- Please send us your furnace model number if you would like for us to check and make sure this is the right flame sensor for your furnace. Our email address is: email@example.com
- We would Love to help you out and have your business!