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Read our privacy policyThe Koldwave K9KK21BF is a 21,200 BTU/h air-cooled portable air conditioner designed to provide targeted cooling for commercial, industrial, and temporary cooling applications. Combining a compact refrigeration system, dedicated spot-cooling and room-cooling modes, two directional cold-air outlets, and an electronic control panel with self-diagnostic functionality, this portable cooling system provides supplemental temperature control without requiring a permanent HVAC installation. Its heavy-duty twin-wheel casters, flexible ducting options, and standard 230V electrical connection support deployment in workplaces, computer rooms, industrial kitchens, manufacturing areas, and emergency cooling applications.
The Koldwave K9KK21BF delivers a rated cooling capacity of 21,200 BTU/h, equivalent to approximately 1.8 tons of refrigeration. Its air-cooled refrigeration system uses R-32 refrigerant, with a specified refrigerant charge of 19.4 oz (550 g). Manufacturer-published specifications list power consumption of 2,100 watts, rated current of 9.32 amps, and an energy efficiency ratio (EER) of 10.1 BTU/Wh. The specified ambient operating range is 64°F to 113°F. Room-cooling temperature settings range from 64°F to 86°F, while spot-cooling mode uses a nominal discharge-air target of 32°F. The manufacturer lists an approximate room-cooling application area of 538 square feet; actual performance depends on the heat load, ambient conditions, ventilation, and installation configuration.
The Koldwave K9KK21BF features dedicated spot-cooling and room-cooling modes to accommodate different application requirements. Spot-cooling mode regulates operation according to the temperature of the discharged air, helping provide targeted cooling for employees, equipment, and concentrated heat loads. Room-cooling mode uses incoming air temperature to regulate the selected room-temperature target. Two directional cold-air outlets support distribution of conditioned air toward designated areas. This flexibility is particularly useful in manufacturing facilities, computer rooms, industrial kitchens, and workplaces where cooling an entire building may be impractical. When operating in an enclosed space, warm condenser air must be exhausted outside the conditioned area using the appropriate ducting arrangement to help maintain effective cooling performance.
The Koldwave K9KK21BF provides indoor airflow rated at 560 CFM on high speed and 465 CFM on low speed. Its two directional cold-air outlets allow conditioned air to be distributed toward selected workstations, equipment, or occupied areas. The multi-speed blower supports airflow adjustment according to the application. The unit features a 12-inch hot-air discharge duct connection for routing warm condenser air away from the cooled space. Manufacturer-published specifications list maximum hot-air exhaust duct and cold-air supply duct lengths of 50 feet and 30 feet, respectively. Follow the manufacturer's duct sizing and routing instructions, maintain unobstructed air passages, and ensure that warm condenser air is directed away from the area being cooled to prevent heat recirculation.
The Koldwave K9KK21BF features a portable, molded-cabinet design with heavy-duty twin-wheel casters for movement between suitable commercial and industrial work areas. Its published dimensions are approximately 21 inches wide, 27 inches deep, and 41 inches high, with a net weight of approximately 186 pounds. The compact footprint supports deployment in equipment rooms, production areas, workplaces, and temporary cooling locations. The unit requires appropriate clearance around the air intake, condenser, and service panels, as well as a suitable arrangement for hot-air exhaust. Position the air conditioner on a stable, level surface and verify that the electrical supply, ventilation, and duct connections meet the manufacturer's installation requirements. Use appropriate handling procedures when moving the unit.
The Koldwave K9KK21BF incorporates a condensate collection tank with a listed capacity of approximately 4 gallons (15 liters). During cooling operation, moisture condenses on the evaporator and collects in the tank. A full-tank safety switch helps protect the unit by responding when the condensate level reaches its limit. The tank must be monitored and emptied as required to maintain continued operation. An optional 230V condensate pump kit is available for compatible configurations where pumped drainage is preferred. Follow the manufacturer's instructions for condensate removal, pump installation, and drainage routing, and inspect the tank and drainage components periodically for obstructions, leaks, or buildup.
The Koldwave K9KK21BF features an electronic control panel with a temperature display, spot-cooling and room-cooling modes, fan-speed selection, and an off-timer. Its self-diagnostic system displays operating conditions and fault indications to support troubleshooting. Protective functions include compressor overload protection, an anti-freezing thermistor, a high-pressure safety switch, a compressor time-delay program, and a full-tank safety switch. Automatic restart supports recovery after a power interruption when electrical power is restored. The unit requires a 230V, single-phase, 60Hz electrical supply and uses a NEMA 6-15P plug. Published specifications list rated current of 9.32 amps, power consumption of 2,100 watts, and a 14 AWG power cord measuring approximately 10 feet long. Use a properly grounded receptacle compatible with the NEMA 6-15P plug and verify that the electrical circuit meets the manufacturer's requirements and applicable electrical codes.
The Koldwave K9KK21BF is designed for supplemental cooling in commercial and industrial environments, including factories, workplaces, industrial kitchens, computer rooms, equipment areas, manufacturing workstations, outdoor events with suitable protection, and emergency cooling applications. Its 21,200 BTU/h cooling capacity supports localized heat loads where additional cooling is needed or a permanent HVAC installation is impractical. The combination of spot-cooling and room-cooling modes allows the unit to accommodate different temperature-control requirements, while its portable caster-wheel design supports deployment as operating conditions change. Application suitability depends on the heat load, ambient temperature, ventilation, and availability of an appropriate condenser exhaust arrangement.
The Koldwave K9KK21BF includes heavy-duty twin-wheel casters to support relocation within suitable facilities. Its portable construction allows supplemental cooling to be deployed where required without permanent HVAC integration. With a listed net weight of approximately 186 pounds, the unit should be moved using safe handling practices and an appropriate route that accommodates its size and weight. Before relocation, turn off the unit, disconnect the electrical supply, and secure or disconnect the exhaust duct and condensate connections as required. After positioning, verify that the unit is stable, air passages are unobstructed, and the exhaust arrangement is installed correctly before restarting the system.
The Koldwave K9KK21BF incorporates a self-diagnostic control system, serviceable air filters, and protective monitoring functions to support routine maintenance. Regularly inspect and clean the filters according to the manufacturer's instructions to help maintain airflow and cooling performance. Keep condenser air passages clear of dust and obstructions, inspect the exhaust duct for secure connections, and periodically check the condensate tank and drainage components. Review displayed fault indications and follow the manufacturer's troubleshooting procedures when abnormal operation occurs. Before cleaning or servicing the unit, turn it off and disconnect the electrical supply. Refrigeration-system repairs and electrical servicing should be performed by qualified personnel.
Koldwave's published warranty information for this product series specifies two years of parts-only coverage and three years of compressor coverage, subject to the manufacturer's applicable terms, conditions, and exclusions. Warranty eligibility and claim requirements may depend on the purchase date, installation, and applicable warranty documentation. Refer to the official Koldwave warranty information supplied with the K9KK21BF to confirm the coverage period, registration requirements, and service procedures.
Experience flexible supplemental cooling with the Koldwave K9KK21BF portable air conditioner. Combining 21,200 BTU/h of cooling capacity with spot-cooling and room-cooling modes, two directional cold-air outlets, multi-speed fan operation, condensate collection, and self-diagnostic controls, this portable air-conditioning system provides targeted temperature control for commercial workspaces, computer rooms, industrial kitchens, manufacturing facilities, and temporary cooling requirements.
All Koldwave commercial unit sales are final and are non-refundable.