AC Won't Turn On

When nothing happens after you lower the thermostat, the cause ranges from a tripped breaker or blown capacitor to a failed contactor, bad thermostat, or a safety switch that has cut power on purpose. We work through the electrical and control system methodically so you are not paying to replace parts that were never the problem.

Signs You Need This Service

• No response at all when you lower the thermostat
• The breaker trips every time the AC starts
• You hear a click or hum but the system never starts
• Thermostat screen is blank or unresponsive

Common Causes

• A blown capacitor, the single most common reason a system hums or clicks but will not start.
• A failed contactor, the electrical relay that connects power to the outdoor unit, which pits and wears out over time.
• A tripped breaker or a blown fuse, sometimes a symptom of a deeper electrical fault rather than the whole problem.
• A tripped float safety switch from a clogged condensate drain, which cuts power on purpose to prevent a water leak.
• A dead or miswired thermostat, or wiring that has corroded or come loose over years of service.

How We Handle It

1. Check the breaker, disconnect, and safety switches
2. Test the thermostat, capacitor, and contactor
3. Inspect wiring and the condensate float switch
4. Repair the fault and confirm a clean start-up

Why This Happens in South Florida

A dead AC is common at the start of a South Florida heat wave, when a system that sat marginal all spring is suddenly asked to run flat out. Capacitors and contactors that were barely hanging on fail under that load, and the humidity-driven drain clogs that trip safety switches peak in the same season. Because the causes range from a five-dollar part to a failed compressor, guessing is expensive. We work through the electrical and control system with a meter so you are not paying to replace parts that were never the problem.