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SPT TN-12E Limit Switch
The limit switch has a sensor located in the furnace that can determine when the heated air is warmed to a point for the main blower to kick in and circulate the air. The main reason limit switches are made is because if the air is not warm enough then the house will never get warm enough.
Major symptoms main limit switch has little life left
- The HVAC system starts to runs uneven occasionally
- The heating and cooling system refuses to start nor will it stay running like it is supposed to
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Before you decide on buying or ordering a new SPT TN-12E replacement part, do your due diligence and cross-check the model number as well as make a visual inspection in order to be sure the correct limit switch is the one being purchased. Replacing a new limit switch can be quite easy if you possess the knowledge and have the proper tools to get it done.
Feel free to download your manual for help.
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