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Lennox SPA048H4 Air Pressure Switch
The function of this type of switch is to determine whether or not the primary air circulator is doing what it is supposed to do. A good number of pressure switches today have a manual reset feature, which forces the system to be reset physically before the HVAC system will continue. An air pressure switch is part of a small, but important collection of hardware devices made to keep you from harm.
Warning Signs that the Switch is in Need of Replacement
- The blower refuses to function properly.
- The proper temp is never reached.
- Wrong electrical voltage being used by the switch.
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If you decide on picking up or purchasing any Lennox SPA048H4 part, do your due diligence and make sure of the model number and also make a visual comparison in order to be sure the correct air pressure switch is the one being purchased. There is no rule that says you have to install the replacement part alone. Consult with a professional locally to do the job for you.
Feel free to download your manual for help.
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