This system is meant to be installed by a HVAC technician. The newly designed 2nd generation Advantage Series, with improved efficiency ratings up to 17.7 SEER, delivers high performance from the moment it's activated. And its competitive price makes it a consumer favorite that's tough to beat. The MRCOOL Advantage condenser and wall mounted air handler is an ideal combination of superior product quality, energy efficiency, quiet operation and financial value. The condenser incorporates a high performance compressor with eco-friendly, chlorine-free R-410A refrigerant. The MRCOOL Advantage is the clear choice for consumers who want to combine superior interior comfort with environmentally friendly technology.