Safety first: turn off your AC system at both the thermostat and circuit breaker to prevent further damage. Check for immediate hazards like burning smells, sparks, or gas odors—evacuate and call emergency services if present.
Next, perform basic troubleshooting: verify thermostat settings (set to “Cool” below room temperature), replace dirty air filters, reset any tripped breakers, and ensure all vents are open and unobstructed. Document any unusual sounds, error codes, or visible issues before calling for help.
Contact a 24/7 emergency HVAC professional if you notice electrical problems, refrigerant leaks (hissing sounds, ice buildup), water leaks, complete system failure during extreme heat, or persistent mechanical noises.
While waiting for service, ensure clear access to both indoor and outdoor units, gather warranty information and service records, and create temporary cooling with fans. Never attempt DIY electrical or refrigerant repairs as these can be dangerous and void warranties.
