Not a recall. Arrived on site to troubleshoot the home being cold and for high electricity bills. We replaced the thermostat in the summer when we came for a diagnostic. We initially found the thermostat was set to “emergency heat” instead of just “heat”. This was activating heat strips for primary heat, which also explains the low supply temperatures. We switched the thermostat to heat and thoroughly inspected the rest of the system to ensure the rest of the system was running without issue. We did find a few opportunities for improvement. The dual capacitor which powers the outdoor compressor and condenser fan motor was out of tolerance and approaching failure. We discovered the ductboard plenums and supply trunk lines were very dirty and the filter cabinet was pulling air from the crawlspace into the evaporator and into the blower affecting airflow and indoor air quality. Otherwise the system was mechanically in good shape after we replaced the dual capacitor. We spoke about clean