Where to purchase Lennox flame sensor???

Just had to replace my flame sensor on my Lennox G50UH furnace, The local furnace guy just charged me an arm an leg to replace it. I was wondering if there is any suppliers online where I can order one for next time. If anyone can assist me in an online supplier it would be greatly appreciated. Thx If you have a part number, its easy. A Google search for lennox flame sensor turned up about 100 sites. And most local HVAC supply stores will sell parts like that to the homeowner. Part # 31L71 Thanks I'll try Google It's quite rare to need to replace the flame sensor --- they can almost always be cleaned unless the wire has been burned or otherwise damaged. Havinf a spare hot surface ignitor on hand is a good idea though --- they typically cost $15-20 or so, are easy to replace and the problem is easy to diagnose. And it's not unusual that they fail. Originally Posted by SeattlePioneer It's quite rare to need to replace the flame sensor ...Havinf a spare hot surface ignitor on hand is a good idea though... Very good advice Pioneer. The HSI is usually easy to troubleshoot and replace by the do-it-yourself-er and they can save $100 by doing it themselves. However, they are very fragile and need to be handled very carefully. Broke more than a couple myself $115 installed, by cheaper HVAC guy in town. I wish I was licensed to just install HSI's. Originally Posted by tstanley Just had to replace my flame sensor on my Lennox G50UH furnace, The local furnace guy just charged me an arm an leg to replace it. Thx Now you understand why God gives people two arms----

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