MRCOOL Olympus 4th Generation 9K - 24K BTU single zone system R454B

The MRCOOL Olympus 4th Generation system blends high-performance ductless comfort with modern efficiency. Built for HVAC professionals, the system uses eco-friendly R-454B refrigerant and delivers powerful heating and cooling across a wide range of capacity options, making it ideal for both single-zone and multi-zone installations.

Its air handlers, including wall-mounted, ceiling cassette, and ducted models, are engineered for quiet operation, energy efficiency, and flexible installation. The 24,000 BTU 4th-Gen wall handler, for example, is compatible with a variety of Olympus condensers and provides reliable performance in a sleek, compact form.

Control is simple and smart: the system supports Wi-Fi connectivity via the MRCOOL SmartHVAC app, and it’s compatible with Amazon Alexa and Google Assistant. For comfort, you’ll find features like “Follow Me” mode, sleep mode, and multiple fan speeds that let you tailor airflow precisely to your space.

Because the Olympus Series is built for professional installation, it’s important to use a certified technician rather than attempting a DIY setup. Overall, the Olympus 4G offers high-efficiency climate control, low environmental impact, and modern smart features in a highly versatile system.