The show opens at one of Key West's most popular destinations, Harry Truman's ""Little White House,"" where the President visited for many years after having originally been sent to the island to recover from a severe cold and exhaustion. Our heating and plumbing expert gives HVAC contractor Charle Roberts a walk-through of the high-velocity, flexible-duct air conditioning package, making its debut in Key West. Out back, pool excavator Ray Vanyo continues to struggle with the challenge of working in a confined space. Back at the jobsite, homeowner Michael Miller shows us his plans for the new library. Finally, our four Northerners sneak off to watch the sailboats battle it out in the Key West Race Week heats.Watch and learn: Innovations in water conservation.