When the Dillard’s department store in Naples, FL, reached the point where its rooftop HVAC equipment was in need of replacement, company officials decided to put energy savings as the primary goal. The goal was to save 20% operating costs over the five years after installation, with an expected unit life of 25 years at the 180,000-sq-ft facility. Because this was a Gulf Coast application, they also needed a solution that could accomplish the energy savings while offering corrosion protection to extend the unit life.