high-quality Multi-Zone Comfort: Experience seamless climate control throughout your home or office with this advanced 4-zone mini split air conditioner and heat pump system. Each of the three 9,000 BTU and one 18,000 BTU indoor wall-mounted units features its own remote for personalized temperature adjustment, while a single high-capacity, pre-charged outdoor condenser powers the entire system efficiently.All-Season Flexibility: Engineered with a powerful inverter heat pump and a wide working range (-4°F to 122°F), this system delivers reliable cooling and heating in any climate. Enjoy added features like auto-defrost, four-way swing airflow for even distribution, enhanced mode for rapid comfort, sleep mode for energy savings at night, and a super-quiet mute function—perfect for bedrooms, offices, and commercial spaces.Certified Energy Efficiency: With a 19 SEER2 rating, ETL and AHRI certifications, and inverter technology, this mini split AC cuts energy consumption by up to 30%, reducing monthly bills without compromising performance. It's an eco-friendly choice for living rooms, restaurants, garages, and more.Whisper-Quiet Operation: Operating at just 28–45 dBa, the indoor units ensure a peaceful environment, allowing you to relax, work, or sleep undisturbed. The sleek, modern design fits beautifully into any decor.Complete Installation Kit & 24/7 Support: The package includes four indoor units, one pre-charged outdoor condenser, four 16.4 ft line sets, four remote controls, and all necessary mounting accessories. Professional installation is required for efficient performance.Important Note: The product is delivered in three packages. Indoor unit size: 34.84 × 14.41 × 10.94 in; outdoor condenser size: 40.23 × 32.87 × 18.89 in. Additional copper and power cord may be required for installation.