HVAC Installation in St. Petersburg, FL
A new system here will heat from January through January and cool from March through December every year. Tell us about the house, and a licensed contractor who covers Pinellas County will get in touch.
Tell us about the job
It takes about a minute.
Eleven months of the year, this system is working
In St. Petersburg, cooling season runs March through December. Summer afternoons average 90°F, so the compressor is the part doing most of the work, most of the year. Winter only asks for heat in January, when nights average 54°F, but the system still needs to switch over and handle it without trouble.
Most homes here heat with electricity, which means the outdoor unit and the indoor coil both carry the load, in the heat and in that one cold month. Pinellas County has seen 60 damaging wind events over the past ten years, and in 2024, 38% of Florida households lost power for at least a day. A new system installed here has to be sized for a Florida summer, wired to come back on its own when the power drops, and set up by someone who knows what a coastal storm season does to outdoor equipment.
- 1 months
- January through January, your system heats
- 10 months
- March through December, it cools
- 54°F
- the average winter night it heats against
- 90°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Florida requires HVAC contractors to hold a state license.
The state license is issued to the contractor by the Construction Industry Licensing Board, and it stays with that person or company across every job they do, not just this one. It covers the contractor, not the individual job. That matters here because it means the license is not something that gets checked box by box on your install. It is what tells you the state has this contractor on record.
For a heating and cooling system install, the county or city building office is what checks the job itself. Most cities and counties require a permit before the work starts and an inspection after it is done. That inspection is where someone other than the installer looks at what went in. It is separate from the license, and it is what confirms the new system was put in to code.
Sources: Florida Legislature · Florida Department of Business and Professional Regulation
- When should I replace my HVAC system?
- Replace it when repairs get frequent, the unit is old, or it can't keep up on the hottest afternoons. Cooling runs March through December here, ten months a year, so a struggling air conditioner does not get much of a break to hide the problem. If a contractor has been out more than once this year for the same issue, that is usually a sign to start planning a replacement instead of another repair. A contractor can look at the unit's age and condition and tell you whether it is worth fixing again.
- Should I replace my furnace and air conditioner at the same time?
- If both are old and near the end of their life, yes, it makes sense to do them together. A furnace and air conditioner installed at the same time are matched to work as one system, and pairing an old furnace with a new air conditioner can keep the new unit from running at its rated efficiency. That said, homes here only need heat in January, so the furnace gets little use compared to the air conditioner. If your air conditioner is failing but the furnace is still young and working fine, a contractor can size a new air conditioner to pair with the furnace you already have.
- What happens during an HVAC installation?
- A contractor removes the old equipment, checks the ductwork for leaks or sizing problems, and sets the new furnace or air conditioner in place. They connect the refrigerant lines, wiring, and ductwork, then test the system for proper airflow and pressure. Storms are common here, with 60 damaging wind events recorded over the past ten years, so it is worth asking how the new system will restart once power comes back after an outage. Most equipment restarts on its own, but it is a good thing to confirm before the contractor finishes the job.