HVAC	Heat, ventilation, and air conditioning
PAC	Precision air conditioning
FDD	Fault detection and diagnosis
ML	Machine learning
SVM	Support Vector Machine
KNN	K-Nearest Neighbors
RF	Random Forest
GB	Gradient Boosting
DT	Decision Tree
NB	Naïve Bayes
CSV	Comma-separated values
RO	Refrigerant overcharge
RU	Refrigerant undercharge
RL	Line restriction
CA	Condenser airflow reduction
EA	Evaporator airflow reduction