When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission.
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network
Lennox G40DF-48C-090 Thermistor
A thermistor is a type of resistor whose rated resistance depends on the temperature at its location. The furnace or AC interprets the temperature in a few critical areas to understand what is going on. They notify the heating and cooling system when a temperature reaches a certain point.
Cues of a poorly working all-important thermister
- The heating and AC system may not initiate the starting sequence due to any one malfunctioning thermistor
- The main fan may fail in the attempt to begin full speed blowing
This site contains affiliate links for which I may be compensated
If you decide on picking up or purchasing any Lennox G40DF-48C-090 replacement part do your best and make sure of the correct model as well as make a visual comparison in order to be sure the right thermistor is being ordered. Replacing the thermistor is a breeze provided you have the time and have the proper tools to get it done.
Feel free to download your manual for help.
This site contains affiliate links for which I may be compensated
