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Lennox OF25-120R Limit Switch
One big reason why limit switches are designed that way is because if the air is not warm enough the you will lose heat in the ducts and the vents will just blow cool air. The limit switch contains a sensor in the air handler that senses, or governs, when the air is actually warm enough that it can be circulated throughout the house.
Major clues limit switch is in dire need of a replacement
- The HVAC system will not initiate nor will it stay running like it should
- The HVAC system begins to become inconsistent more often than not
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Before buying or purchasing any Lennox OF25-120R part do your best and cross-check the model number and also make a visual comparison so that you are positive that the correct limit switch is the one being purchased. There is no rule that says you have to install the replacement part alone. Search for a pro in your town or city to replace the part.
Feel free to download your manual for help.
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