The revolutionary Mach 8 models have the lowest aerodynamic profile of any rooftop A/C units in the industry. The Condensate Pump included with this Mach 8 Plus RV Rooftop Air Conditioner prevents pools of water from forming on your RV rooftop and absorbs any excess water during the cooling process. Standing at just 8" tall, a lower profile means less drag and improved fuel efficiency. Two motors deliver the same high BTUs of cool air on both low and high speeds. The Mach 8 features the highest air flow on high speed and provides ultra-quiet sound on low speed for night time cooling. The industry exclusive fiberglass base pan provides superior strength and durability while reducing weight. The Mach 8 models are the lightest, low profile A/C unit made, weighing just 92 lbs. Compared to other RV air conditioners, Mach 8 models have the largest BTU resistance heater.