Ambient cooling optimization is the system's ability to maintain high SEER efficiency even when outdoor temperatures are extreme. Our Bravo Milano 12,000 BTU Universal Floor/Ceiling is optimized for both sweltering summers and freezing winters. This optimization is further enhanced in our Multi-Zone systems through intelligent refrigerant flow. For those in particularly harsh climates, additional Accessories such as crankcase heaters may be utilized to protect the compressor. Our Dual-Zone configurations are specifically tested to ensure they don't lose capacity as the "ambient" temperature shifts. It is this technological edge that makes the Bravo Milano series a reliable choice year-round. Consistent performance regardless of the weather is what we promise our customers.