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Lennox XC21-036 Air Pressure Switch
The primary function of the switch is to determine whether the blower fan is actually running. This pressure switch is a vital device of the safety system that is in place to keep you safe and keep your family safe. A good number of pressure switches today are constructed with a manual reset, from which the switch will have to be manually reset before the HVAC system will continue.
Symptoms that your HVAC Air Pressure Switch is Starting to Fail
- The desired temp is never fully achieved.
- Inaccurate voltage being used by the switch.
- The furnace can not operate.
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If you are going to be buying or purchasing a new Lennox XC21-036 replacement part do your best and double check the model number and also make a visual comparison so that you are positive that the proper replacement air pressure switch is being ordered. It is easy to replace a air pressure switch on your Lennox XC21-036 as long as you know how to and have the proper tools to get it done.
Feel free to download your manual for help.
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