HVAC Repair in Sanford, FL
Homes here need heat from December through January and cooling from March through November. If your system quits, tell us what it's doing and a licensed contractor who covers Seminole County will get in touch.
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Nine months of cooling, and storms that cut the power
Your air conditioner is the machine doing the work in Sanford. Summer afternoons average 92°F, and the system runs March through November, nine months of the year. That kind of runtime wears on the compressor and the fan motor, the parts that don't get a break. Heat only matters December and January, when nights average 51°F, so the furnace or heat strips sit unused most of the year and then get asked to work on the coldest nights.
Most homes here heat with electricity, so a power outage takes the whole system down, heat and air both. Seminole County has seen 30 damaging wind events over the last ten years, and across Florida over a third of households lost power for at least a day in 2024. When the power comes back, a system that sat off in the heat or the cold doesn't always start up on its own the way it should.
- 2 months
- December through January, your system heats
- 9 months
- March through November, it cools
- 51°F
- the average winter night it heats against
- 92°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Florida requires HVAC contractors to hold a state license.
The license comes from the Construction Industry Licensing Board. It covers the contractor, not the individual job, so the same license applies whether the work is a small repair or a full install.
For a heating and cooling repair, that license is what stands behind the person doing the work. It is the state's record that this contractor, specifically, is the one licensed to do it.
Sources: Florida Legislature · Florida Department of Business and Professional Regulation
- Why is my heat not working?
- Most likely something is stopping ignition or shutting the system down before it can heat. With 92.3% of homes here heating with electricity, that often means a heat pump, so check the thermostat is set to heat and above room temperature, and look for a tripped breaker. If the outdoor unit is iced over or the air from the vents feels cool, the system may be stuck in a defrost cycle or failing to switch out of it. A contractor can tell you which it is.
- Why is my system running but not cooling the house?
- Air moving but not cold usually means airflow is blocked or the system is low on refrigerant. Start with the filter. A clogged one starves the coil of airflow and can freeze it, and once that happens the system blows warm air even though it is running. If the filter is clean and the air still is not cold, especially with afternoons here reaching 92°F, the problem is more likely inside the unit and worth having a contractor look at soon.
- What can I check before calling for HVAC repair?
- Check the thermostat first. Make sure it is set to the right mode and the temperature is actually calling for heat or cooling, and change the batteries if it has a blank or dim display. Next check the breaker box for anything tripped, since Florida sees enough wind events to knock out power and a breaker can trip without the rest of the house losing electricity. Last, look at the filter and replace it if it is dirty, since a blocked filter can stop a system from heating or cooling well. If none of that fixes it, a licensed contractor can diagnose what is left.