HVAC Repair in Jacksonville, FL
Homes here need heat from December through February and cooling from April through October. If your system quits, tell us what it's doing and a licensed contractor who covers Duval County will get in touch.
Tell us about the job
It takes about a minute.
Duval County runs its system almost year round
Cooling runs April through October here, seven months, with afternoons averaging 91°F. Heat comes on December through February, three months, on nights that average 46°F. That leaves your compressor and your heat strip doing something most of the year, with only a short stretch of mild weather between them.
Most homes here heat with electricity, so whatever fails in summer or winter draws on the same system. Storms add to the load. Duval County has logged 303 damaging wind events over the past ten years, and in 2024 close to 4 in 10 Florida households lost power for a full day or more. A hard restart after an outage is often when a weak capacitor or a failing contactor finally gives out.
- 3 months
- December through February, your system heats
- 7 months
- April through October, it cools
- 46°F
- the average winter night it heats against
- 91°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Florida requires HVAC contractors to hold a state license.
The Construction Industry Licensing Board licenses the contractor, not the job. That means the state has already tested this contractor and keeps a record of them on file before they ever get to your house.
For a repair to your heating and cooling system, that license is what stands behind the person doing the work. It covers the contractor's qualifications, not a separate check on this particular job. In Florida, that license is the credential behind whoever comes to fix your system.
Sources: Florida Legislature · Florida Department of Business and Professional Regulation
- Why is my heat not working?
- Most electric heat here runs on a heat pump, so start with the thermostat. Check that it is set to heat, not just fan, and that the setpoint is above the room temperature. If the thermostat looks right, check the breaker for the air handler and the outdoor unit, since a tripped breaker on either one will leave you without heat. A heat pump that runs but blows cool air during a cold snap may be stuck in defrost or may need a technician to look at the reversing valve.
- Why is my system running but not cooling the house?
- Check the air filter first. A filter clogged with dust chokes off airflow, and a system starved for air can run all afternoon without pulling the house down. Next, look at the outdoor unit and clear away any leaves, grass clippings, or debris packed against the coil, since it has to release heat outside for the indoor air to cool. If the filter is clean and the outdoor unit is clear but the house still will not cool down when it is 91 degrees out, the refrigerant charge or the compressor likely needs a technician's attention.
- What can I check before calling for HVAC repair?
- Check the thermostat batteries and settings, then check the breaker panel for anything tripped. Look at the air filter and replace it if it is gray or packed with dust, since restricted airflow causes problems that look like bigger failures. If you have a heat pump or furnace, make sure nothing is blocking the outdoor unit or the vents inside the house. After a storm, 38 percent of Florida households lost power for at least a day in 2024, so if your system will not start at all, confirm power is actually reaching the unit before assuming it is broken. Florida requires HVAC contractors to be licensed by the state, so once you call, ask for the license number if it is not already listed.