AUX AIR USA announced the launch of its new One-Way Cassette, a compact ductless system built for tight ceiling spaces. The product will be available in the U.S. in July 2026, with orders shipping once placed. The One-Way Cassette's body fits between 14-inch joist spacing, allowing the unit to sit in the ceiling without major ductwork. It was developed for applications such as bedrooms, hallways, home offices, sunrooms and multifamily spaces where traditional ducted systems may be difficult to install. Its low-profile design aims to help preserve ceiling height and maintain a clean architectural appearance. For contractors, the system offers a serviceable solution for applications where wall-mounted units aren’t ideal and traditional ductwork may add cost or complexity.

The system is available in 9K, 12K and 18K capacities. It includes built-in Wi-Fi control, a washable filter, a high-lift condensate pump with a 57-inch lift and long-range air throw up to 9.8 feet. The unit includes a slide-out PCB control box that can be serviced without removing the unit from the ceiling, plus an integrated circuit breaker that cuts power during maintenance.