Does anyone know of a free software to help size for a swimming pool. The pool being planned for is a probable add-on after the home is completed. The pool would be 8,000 gallons and the homeowners desire is to keep the pool around 86 degrees. She is not looking to heat it year-round, but just extend the season by a couple months before & after summer. We are in NE Florida and have 72 degree groundwater here. Also, any recommendations on brands would be appreciated. We are planning on using ClimateMaster two-stage condensers with Carrier airhandlers.