What to Do When Your AC Stops Working in Florida
First, check your circuit breaker and thermostat. If both are fine, check the air filter. If the AC still will not start, contact an HVAC professional. In Florida's heat, AC failure can be a health concern — do not delay.
Step 1: Check the Breaker
Find your electrical panel and look for a tripped breaker for the AC or air handler. If tripped, flip it off and back on. If it trips again immediately, do not reset it — this indicates a problem that needs a professional.
Step 2: Check the Thermostat
Make sure the thermostat is set to "cool" and the temperature is set below the current room temperature. If the thermostat screen is blank, the batteries may need replacing. If it is a smart thermostat, check for error codes.
Step 3: Check the Air Filter
A clogged air filter can cause the AC to freeze up or shut down. Locate the filter (usually at the return vent or in the air handler) and check if it is dirty. Replace it if needed. This is one of the most common causes of AC problems in Florida.
Step 4: Check the Outdoor Unit
If the outdoor condenser unit is not running, check for debris, dirt, or overgrown vegetation blocking airflow. Do not attempt to open or repair the unit. If the unit is running but not cooling, the refrigerant may be low — this requires a licensed HVAC technician.
When to Call a Professional
If you have checked the breaker, thermostat, and filter and the AC still will not cool, contact an HVAC professional. In Florida's heat, indoor temperatures can reach dangerous levels within hours. TBCRN can priority-route your request to an available HVAC contractor.
Health and Safety
Florida's heat and humidity can cause heat exhaustion and heat stroke. If indoor temperatures exceed 85°F, consider moving to a cooler location — a public library, mall, or cooling center. Check on elderly family members and neighbors.
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Last updated June 1, 2026. Published by TBCRN (Tampa Bay Contractor Referral Network). This article is for general informational purposes and does not constitute professional advice.