Gold-fin protection is a specialized hydrophilic coating on the outdoor heat exchanger that accelerates defrosting and resists corrosive salts. This is a standard premium feature on our Single-Zone and multi-zone condensers. For homeowners in snowy climates, a Bravo Milano 12,000 BTU Universal Floor/Ceiling with gold-fin will heat more efficiently by melting frost faster. Elevating the unit on a Ground Stand prevents snow from piling up against these sensitive fins. You can find specialized cleaning sprays in our Accessories section to keep the gold-fin coating in top condition. This technology is a must-have for Quad-Zone systems that represent a significant investment in home comfort. It ensures that the "heart" of your system stays healthy and efficient for its entire lifespan.