This new 4th generation MRCOOL Advantage series now features an improved SEER of 17.5 while providing quality comfort immediately upon installation by an HVAC technician. Staying environmentally-friendly, the condenser features the chlorine-free refrigerant R-410A. Using WiFi enabled control, this system is easy to set up and can be controlled with the SmartHVAC app or your Amazon Alexa or Google Assistant.