Systems and methods for determining a fault of an air system for heating, ventilation and/or cooling

A heating, ventilation, and air-conditioning (HVAC) system comprising:

• a first heat exchanger in fluid communication with a refrigerant circuit;
• a second heat exchanger in fluid communication with the refrigerant circuit;
• a compressor in fluid communication with the refrigerant circuit;
• a sensor located in or on a housing comprising the compressor, wherein the sensor is configured to detect vibration data, the vibration data being indicative of one or more sounds or vibrations detected via at least a portion of the refrigerant circuit;
• a processor;
• and
• a non-transitory computer-readable medium that stores instructions that, when executed by the processor, cause the system to:
• receive the vibration data;
• identify, based at least in part on the vibration data and stored baseline vibration data, an abnormality in the vibration data, wherein the abnormality is indicated by vibration data indicative of a frequency that is outside of a predetermined range of acceptable frequencies;
• determine a difference between the frequency of the identified abnormality and the predetermined range of acceptable frequencies;
• if the difference is greater than a first threshold, determine the fault will occur in an estimated amount of time;
• and
• if the difference is greater than a second threshold, the second threshold being greater than the first threshold, determine the fault is occurring or has occurred.