The winter season season in St, petersburg, FL is pretty underwhelming, however what I mainly do is focus on the cooling situation, however i have a high velocity AC plan that I use the majority of the year, the benefit of high velocity is the smaller than average ductwork.
The ducts are half the size, adaptable, and can flex into the slats of an older home. The air then quickly whips around the smaller ducts to lower the temperature in minutes rather than hours, then high velocity systems are more usual in hotter areas like Florida. The upkeep is pretty common and the repairs are the usual ones that crop up. I care about having legitimately great AC most of the year; For heating I don’t stress as much. I have a ductless heating system that I use in peak rooms of the household. The heating system is basically worn. I sleep, work, and piping is. Other than that I don’t problem myself with heat. In St. Petersburg our winter season can start as late as December and quit as early as April. Having only a couple of months of chill isn’t so bad. The nights get a little bad however during the daytime it warms up. I will say the greatest problem with the weather in Florida is deciding heating or cooling. Typically I start out with heating at night, in the early day, change to AC, and then have to change back again in the Springtime. That means my St. Petersburg Heating, Ventilation as well as A/C company needs to wash and inspect both systems every time. I use them both most of the year, just heavily favoring the AC plan.