The MRCOOL DIY 18k BTU Hyper Heat 21.2 SEER Ductless Heat Pump Mini-Split Bundle combines a high-efficiency condenser and matching 5th Generation air handler to deliver year-round heating and cooling for spaces approximately 500-800 sq. ft. Advanced inverter technology provides efficient performance and reliable temperature control. Designed for true DIY installation, the included 25 ft. Quick Connect line set comes pre-charged with R-454B refrigerant, eliminating the need for vacuuming, flare welding, or refrigerant handling. The included DIYPRO cable replaces traditional conduit and helps protect wiring from weather, moisture, wildlife, and common outdoor hazards. Compatible with wall-mounted air handlers and OuttaSight Ceiling Cassette applications for added installation flexibility. Control the system with the included remote, the SmartHVAC app for iOS and Android, or voice commands through Amazon Alexa and Google Assistant. Features include Auto Mode, Follow Me temperature sensing, Dry Mode for humidity reduction, programmable Timer, Sleep Mode, Auto Restart after power outages, and energy monitoring through the SmartHVAC app. The Gold Fin coating helps resist corrosion in coastal, humid, and rainy environments. Warranty coverage includes a 7-year compressor warranty and 5-year parts warranty when registered. The system is also eligible for the MRCOOL Care Program, which offers a limited lifetime replacement warranty and annual care kit coverage for qualified units.