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Lennox G40DF-36A-045 Limit Switch
The main reason limit switches are made is because if the air is too cool inside the furnace to begin with, then the house will never get warm enough. The limit switch contains a sensor located in the furnace that senses, or governs, if and when the air is warm enough for the air to begin normal home circulation.
Subtle cues of a failing limit switch
- The system begins to erratically frequently
- The heating and cooling system will not even start or will not stay running even though the desired temperature has not been attained
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Before buying or ordering a new Lennox G40DF-36A-045 replacement part, do your due diligence and cross-check the correct model as well as make a visual inspection in order to be sure the right limit switch is the one being purchased. It is easy to replace a limit switch on your Lennox G40DF-36A-045 so long as you are handy and have the time and tools to do the job right.
Feel free to download your manual for help.
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