With the GREE Multi Ultra Series ductless mini-split system, you can enjoy the freedom of keeping multiple rooms comfortable at once without having to sacrifice aesthetics. The quiet, sleek design inherent to any of the compatible indoor air handlers offers advanced performance with a high efficiency rating of up to 20 SEER2 in cooling and 10 HSPF2 in heating. The Energy Star certified outdoor unit provides a powerful yet seamless delivery of air through its two-stage, 3-cylinder variable-speed compressor, and is equally unobtrusive and quiet. With its efficient and effective performance, the GREE Multi Ultra Series ductless mini-split systems make it easier than ever to maintain an optimal heating or cooling performance, regardless of the weather, that is unmatched in both quality and affordability. Features: Improved design to blend in with your decor Most reliable system for harsh weather - ideal for colder climates Corrosion-resistant, acrylic resin coated coil Precise airflow control with multiple fan speeds Sound levels as low as 58 dB on outdoor units Intelligent preheating and defrost settings available Low voltage start-up with automatic voltage adaptation Self-diagnosis capabilities included Washable air filters provided Ideal for residential or commercial spaces Warranty: GREE provides a limited 7-year warranty for the outdoor unit's compressor and a limited 5-year warranty on all functional parts within the split system units. Please note that the units must be installed following your state and local codes, and the units must be registered online through the manufacturer for the warranty to be upheld.