MRCOOL DIY 36K BTU Ductless Mini Split Heat Pump Complete System Energy Star 4th Gen DIY-36-HP-WM-230C25 Key Features: Up to 18 SEER efficiency Gold Fin condenser: Corrosion-resistant, ideal for coastal environments Variable-speed DC inverter compressor: Reduces operating costs R-410A refrigerant: Environmentally friendly Standard 7-year compressor/5-year parts warranty with optional registration for a limited lifetime compressor warranty The MRCOOL 4th Generation DIY 36K BTU, 18 SEER Ductless Heat Pump is one of the most powerful single-zone systems in the DIY Series, designed to heat and cool areas up to 1,500 sq. ft. This complete system includes a 36K condenser, 36K air handler, and a 25 ft. pre-charged line set filled with R-410A refrigerant. With its impressive 18 SEER efficiency rating, it delivers exceptional performance while remaining energy-efficient. What makes this system even more appealing is its easy DIY installation. Thanks to the patented MRCOOL Pre-Charged Quick-Connect Line Set, homeowners can install the system using just a few hand tools, making refrigerant piping connections as simple as turning a few wrenches. Beyond performance and ease of installation, this system boasts multiple operational features. Users can choose from six operating modes: AUTO, HEAT, COOL, FAN-ONLY, DRY (dehumidification), and SLEEP, ensuring customized comfort for every situation. The "Follow Me" function continuously adjusts the room temperature based on the reading from the handheld remotes location, maximizing comfort. Additionally, the system can be controlled remotely via the Smart HVAC app, compatible with both Apple and Android smartphones. MRCOOL backs this product with a limited lifetime compressor warranty, offering long-term peace of mind.