The GREE Rio High-Efficiency Ductless Mini-Split Heat Pump system is compact quiet & provides unmatched comfort in any room. Without needing ductwork installation is simple fast & cost effective. In addition The GREE Rio provides quiet comfort & improved efficiency by eliminating heat loss inefficiencies of conventional central air conditioning systems. Features & Benefits : Eco-friendly R410A Refrigerant, Low Ambient Cooling 5°F (208-230V Systems Only), Intelligent Defrost, Intelligent Pre-Heating, Timer. BTUs needed : lack of insulation heavy sun excessively hot regions & tall ceilings)9,000 BTU - 350 sqft | 12,000 BTU - 500 sqft | 18,000 BTU - 750 sqft | 24,000 BTU - 1,000 sqft | 30,000 BTU - 1,250 sqft | 36,000 BTU - 1,500 sqft. Yes it comes fully backed by a manufacturer's warranty and ComfortUp is an authorized online seller of these systems. Our customer support team will provide assistance should you ever need to file a warranty claim with the manufacturer. Please be aware that only systems that are installed by a licensed HVAC contractor are backed by the warranty. Proof of licensed installation is required. The receipt/invoice from the contractor should be sufficient.