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Lennox XC21-048 Limit Switch
Limit switches are crucial because if the warmed air is too cool then the house will never get warm enough. The limit switch is a type of sensor switch in the heating area that senses, or governs, when the air is warmed to a point to activate the main blower.
How do you know if your main limit switch is crapping out?
- System refuses to start nor will it stay running like it ought to
- The system is starting to initiate and then stops more than once
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Before buying or purchasing a new Lennox XC21-048 replacement part, do your due diligence and double check the model number as well as make a visual comparison so that you are positive that the correct limit switch is being ordered. If you are unsure about installing the limit switch on your own then it is probably best to consult a pro to do the work for you.
Feel free to download your manual for help.
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