H9 SeriesAir-Cooled Rack-Mounted Air Conditioners

The H9 Series air-cooled rack-mounted air conditioners deliver dependable thermal management for sensitive electronic equipment housed in industrial enclosures, combining robust construction with intelligent climate control features for year-round reliability.

Each unit features a heavy-duty steel shell finished with a baked powder coating in ANSI 61 gray, providing superior corrosion resistance and durability in demanding environments; custom color options are available to match facility standards. The closed-loop cooling design isolates the enclosure interior airflow system from ambient conditions, preventing hot or contaminated air from invading the protected component compartment and ensuring consistent dehumidification of sensitive equipment. A multi-layer aluminum grid filter with a one-piece aluminum frame captures contaminants at the air intake, keeping internal components clean throughout the system's operational life. Replacement filters are available through kooltronic.com/spareparts for convenient maintenance planning.

The H9 Series incorporates CFC-free R134a refrigerant for environmentally responsible operation, paired with a built-in condensate evaporator that eliminates the need for drain lines under normal operating conditions--overflow protection with drain fitting and hose is included for extreme humidity scenarios. A compressor short cycle protector safeguards against frequent restarts caused by low or fluctuating heat loads or power interruptions, significantly extending compressor life and reducing energy consumption in applications subject to solar gain or variable equipment utilization. The included low ambient kit maintains proper operating pressures when temperatures drop below 50 degrees Fahrenheit, functioning reliably down to 0 degrees Fahrenheit through compressor heating and condenser blower modulation. Both programmable thermostat and temperature alarm features provide precise, versatile control with early-alert capability for proactive facility management. The H9 Series is UL/CUR Recognized for compliance with industry standards.