No, not frequently. Except for a few weeks of winter, outdoor weather is hot and humid almost year long in most areas of Florida. If you bring in the hot and humid outdoor air through frequent ventilation, it will raise your conditioned interior temperature and also increase indoor humidity. This can cause other

indoor environmental quality problems.

Source: Energy Efficient Homes: Indoor Air Quality and Energy1Hyun-Jeong Lee, Kathleen Ruppert, Wendell Porter, UF IFAS FCS3275, 2008

Additional Resources

EnergyStar®  - http://www.energystar.gov/

UF IFAS Energy Efficient Homes: Indoor Air Quality and Energy http://edis.ifas.ufl.edu/FY1044