• Rooftop Units
  • Air Handling Units
  • Condensing Units
  • Heating/Cooling Coils
    		 
    • Air Filters
    • Dust Collectors
    • Air Pollution Control Equipment
    		 
  • Make-up Air units
  • Air Rotation Units
    •  
       
  • Dust Collectors
    		•  
  • Building Ventilation
  • Management Strategies
    		•  
  • Medical & Process Chillers
    •  
       
  • Wall Mount Air Conditioners
  • School Geo Thermal Systems
    		•  
  • Electric Coils & Gas Detection Systems
    		•  
  • Dehumidification Units & Make-up Air Equipment
    •  
       
  • High Enthalpy Fixed Plate Recovery Ventilation Systems
    		•  
  • Commercial & Industrial Fans & Blowers
    		•  
  • Multi Split & Mini Split A/C Systems
  • Rooftop & PTAC Units
  • Air Handlers & Chillers
  • Water Source Heat Pumps
  • Condensing & Fan Coil Units
    		•
     
       
  • Computer Room Air Conditioning
    		•  
  • Fabric Air Dispersion Systems
    		•  
  • Airflow Measurement
    •  
       
  • VAVs & Air Handling Units
  • Fan Coil & Blower Coil Units
    		•   
  • Fluid Coolers
  • Open Cooling Towers
  • Evaporative Condensers
  • Non-Chemical Water Treatment
    		•  
  • Geothermal Systems
  • Water Source Heat Pumps
    •  
       
  • Filter housings
  • HEPA Air Filters
  • Medium & High Efficiency Air Filters
    		•  
  • Custom Air Handling Units/Systems
    		•  
  • Air-to-Air Exchangers
  • Heat Recovery Equipment
    •  
       
  • Registers, Grilles & Diffusers
    		•  
  • Industrial Chimney Products
  • No Chase Grease Duct
    		•  
  • Livesteam
  • Humidifiers
  • Gas Humidifiers
  • Electrode Steam
    •  
       
  • Laboratory Air Flow Control Systems
    		•  
  • Industrial Exhaust
  • Emergency Vehicle Exhaust


    		•  
    • Surgical Suite Ceiling Diffusser Systems
     
       
  • Fire Dampers
  • Sound Control
  • Control Dampers
  • Louvers & Dampers
    		•  
  • Custom Air Handling Units
    		•  
  • Spiral Duct Sound Attenuators
    •  
       
  • Industrial Dehumidification
  • Swimming Pool Dehumidification
    		•  
  • Gas-Fired Radiant Heating Systems
    		•  
  • Germicidal, high Efficiency, Low-Pressure Drop Filtration
    •  
       
  • Axial Flow Fans
    		•  
  • Classroom Unit Ventilators
    		•  
  • Chilled Beams
  • Displacement Ventilation
  • Underfloor Air Distribution
    •  
       
  • Draft Inducers
  • Specialty fans
  • Dryer Duct Booster Fans
    		•  
  • Ultraviolet Lamp Systems
    		•  
  • Variable Frequency Drives
    •  
         
  • Fiberglass Ducts
    		•  
  • Radiant Heaters
    		•    
     
    		 
    CORPORATE HEADQUARTERS REGIONAL OFFICES  
    4909 North Lewis Ave 1221 Concourse Drive  
    Sioux Falls, SD 57104 Rapid City, SD 57703  
     
    (605) 336-0333 (605) 348-2033  
    (605) 336-8681 FAX (605) 348-9215 FAX  
    O'Connor Company is a commercial heating, ventilation, and air conditioning (HVAC) equipment supplier representing dozens of the industry’s best manufacturers with offices and warehouses in Sioux Falls, SD and Rapid City, SD. O'Connor serves the educational, institutional, commercial, industrial, government and healthcare industries by providing top-quality HVAC equipment and replacement parts.
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