Greenheck Introduces the RT-20 Rooftop Unit

Greenheck has expanded its rooftop unit (RTU) line with the addition of its smallest unit, Model RT-20. The RT-20 delivers 3 to 5 tons of packaged DX cooling, 500 to 2,000 cfm of airflow.

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Greenheck has expanded its rooftop unit (RTU) line with the addition of its smallest unit, Model RT-20. The RT-20 delivers 3 to 5 tons of packaged DX cooling, 500 to 2,000 cfm of airflow, and up to 175 mbh of indirect gas heating. Greenheck’s RT rooftop units revolutionize indoor comfort by precisely controlling both temperature and humidity with industry-leading standard features. These include inverter scroll compressors that maximize efficiency at part-load conditions; modulating indirect gas furnaces for tighter temperature control; direct drive supply and exhaust fans that offer a wide performance range and standard modulation capabilities for variable air volume (VAV) systems; and electronically commutated (EC) fan motors on condenser fans that modulate to save energy by controlling head pressure. The RT-20 joins Models RT-40, RT-70, and RT-120 to deliver up to 13,000 cfm across the product offering.  Model RT-20 is well-suited for applications such as retail, classrooms, and small commercial spaces where energy efficiency and humidity control are critical. 

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Greenheck manufactures commercial, institutional and industrial products including fans and ventilators, centrifugal and vane axial fans, laboratory exhaust systems, energy recovery ventilators, make-up air, dampers, and louvers.


May 22, 2026 — Products & Services Update

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