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Lennox G40DF-48C-090X Limit Switch
The main reason limit switches are made is because if the air never warms up then you will never get hot air through the ducts. A normal limit switch is a type of sensor switch in the heat exchanger that makes the determination when the heated air is actually warm enough that it can be circulated throughout the house.
Some clues limit switch will have to be replaced
- The HVAC system is starting to shut down unexpectedly from time to time
- The heating and AC system will not start or run well as it should
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Before buying or purchasing a replacement limit switch for your Lennox G40DF-48C-090X do your best and double check the model number and also make a visual comparison in order to be sure the right limit switch is being ordered. There is no need to install it yourself. Find a professional in your town or city to hire and install the part for you.
Feel free to download your manual for help.
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