TOOL INDEX
Florida HVAC tools
DIY calculators and checklists for homeowners and techs. Not a contractor shop.
AC tonnage calculatorFlorida-adjusted ballpark from square footage, sun, and insulation. Not Manual J.
SEER2 savings calculatorCooling kWh only, with FPL / OUC / Duke planning rates you can edit.
AC maintenance checklistFilter, drain, fan Auto, storm shutoff. Monthly stuff you can do.
R-22 vs R-410A vs R-32 vs R-454BNameplate reading and why you cannot just top off across types.
Repair vs replaceENERGY STAR cues and the unofficial age × quote gut check.
AC freezing in Florida humidityThaw list. Humidity is the fuel. Airflow or charge is the trigger.
Whole-home dehumidifier pintsPlanning bands in current labels. Not a substitute for right-sized AC.
What size AC for 2,000 sq ft?Short answer: about 3.5 tons on a mixed-sun average house.
3 ton vs 3.5 tonBetween sizes, the smaller one often dries better after Manual J.