Ex HVAC tech here. Also was on a commissioning team for a Google DC in SE Asia. Heat waves indeed kill equipment. The system is attempting to deal with a hig

Ex HVAC tech here. Also was on a commissioning team for a Google DC in SE Asia. Heat waves indeed kill equipment. The system is attempting to deal with a higher heat load on the home/conditioned space, while also having to operate with high(er) ambient temperatures. High ambient temps -> High heat load -> warm(er) return refrigerant temps/high(er) refrigerant pressures -> less cooling for compressor / higher mechanical load on compressor -> Elevated power consumption as compressor is working harder -> higher power/heat levels stress electrical insulation & components. The system struggles to keep up as the duty cycle is elevated as well. Putting a sprinkler next to the condensor (outside) unit is a hack.