GrandAire 5 Ton WCHL604AB R-454B Multi-Position Air Handler – High-Efficiency Indoor Unit

The GrandAire WCHL604AB Air Handler is a 5 Ton, multi-position indoor unit engineered for high-volume airflow, energy-saving performance, and full R-454B refrigerant compatibility. This heavy-duty unit is ideal for larger residential homes or light commercial spaces where consistent comfort and system durability are critical.

Featuring a factory-installed TXV valve and an advanced ECM blower motor, this unit ensures precise refrigerant flow control and adaptive airflow output, significantly improving system efficiency and indoor air quality. Its galvanized steel cabinet is internally lined with insulation to reduce vibration and noise, offering a quiet experience even under full load.

The WCHL604AB supports multi-position installation – including upflow, downflow, and horizontal left/right – allowing maximum flexibility for system layout. It pairs effortlessly with heat pumps and straight cool condensers, making it a strong, reliable choice for any full-capacity HVAC system design.

With maintenance-friendly access panels, rugged internal components, and a reputation for dependable operation, the WCHL604AB delivers powerful performance while meeting the most modern environmental requirements.