I would be happy to answer your question and assist you in looking for a property.
Just call or e-mail me directly.
cell (239) 410-3604 Guymangano@aol.com
Feel free to visit my web site as well http://Www.guymangano.com
Do you live in South Florida? Build here? Sell real estate here?
You need to do some research on forced air products, they don't all run with gas. They can be electric strips, heat pumps, natural gas or propane gas. They can be geo thermal as well. A heat pump is very common in Florida and it is a forced air unit and it is often the most efficient.
I'm from Michigan & have lived here over 5 years. Have yet to turn the heat on during the winter nights.