O’Connor Company partners with dozens of manufacturers who are looking for a powerful partnership to promote products. 

Let our deep and long-standing relationships within the engineering and contracting community help you extend your reputation to our multi-state region - South Dakota, North Dakota, Minnesota, Iowa, Nebraska and Wyoming.

Explore our Trusted Manufacturers

    • Filter Housings
    • Air Filters
    • Dust Collectors
    • Air Pollution Control Equipment
    • Air Handling Units
    • Rooftop Units
    • Condensing Units
    • Heating/Cooling Coils
    • Specialty Comfort Equipment
    • Mission Critical Equipment
    • Outdoor Air Equipment
    • Makeup Air Units
    • Air Rotation Units
    • Bearing Protection Rings
    • Universal Mounting Brackets
    • Coils
    • Flow Control Technology Products
    • Building Ventilation Management Strategies
    • Heating/Cooling Radiant Panels
    • Special Extruded Radiant Panels
    • **only available in South Dakota
    • Self-Contained Industrial Air Cleaners
    • Heat Exchangers
    • Pumps
    • Heat Transfer, Separation & Fluid Handling
    • Pumps
    • Expansion Tanks
    • Air Separators
    • Triple Duty Valves
    • Plate & Frame Heat Exchangers
    • Booster Systems
    • Building Controls for Critical Spaces
    • Air Separators
    • Triple Duty Valves
    • Plate & Frame Heat Exchangers
    • Pumps & Expansion Tanks
    • Booster Systems
    • High-Efficiency Cast Iron Boilers
    • Water Metering Technology & Flow Solutions
    • Wall Mount Air Conditioners
    • School Geothermal Systems
    • Underground Preinsulated Duct System
    • Direct-Burial Underground Duct System
    • Electric Coils
    • Gas Detection Systems
    • Flexible Water Tube Boilers
    • High-Efficiency Condensing Boilers
    • Dehumidification Units
    • Makeup Air Equipment
    • InnoFlue Polypropylene Vent
    • Boiler Flue Venting
    • Classroom Unit Ventilators
    • Commercial & Industrial Fans & Blowers
    • Filtration Systems
    • Electrode Steam Humidifiers
    • Gas Humidifiers
    • Livesteam Humidifiers
    • HVAC Coils
    • Freeze Block Coils
    • Steam to Water Packaged Heat Exchangers
    • Burks
    • Barnes
    • Crown
    • Deming
    • Weinman
    • VRV Systems
    • Mini Split A/C Systems
    • Air Handlers & Rooftop Units
    • Chillers & Condensing Units
    • Fan Coil & PTAC Units
    • Water Source Heat Pumps
    • Pool Dehumidification
    • Fire Supression Range Hoods
    • Fabric Air Dispersion Systems
    • Indoor & Outdoor HVAC Ductwork Fabrication
    • Airflow Measurement
    • VAVs
    • Air Handling Units
    • Fan Coil & Blower Coil Units
    • Evaporative Condensers
    • Fluid Coolers
    • Open Cooling Towers
    • Non-Chemical Water Treatment
    • **only available in South Dakota
    • Geothermal Systems
    • Water Source Heat Pumps
    • Pre-filters
    • Final Filters
    • HEPA Filters
    • Plasma Ionization
    • Kitchen Ventilation Systems
    • Hoods, Exhaust fans & Direct-Fired Heaters
    • Low Ambient Mini/Multi Splits
    • Controls & Sensors
    • Custom Air Handling Units
    • Kitchen Ventilation
    • High-Efficiency Condensing Boilers
    • Water & Pool Heaters
    • Steel Firebox & Scotch Marine Boilers
    • Biomass & Coal Fired Boilers
    • Radiant In-floor Tubing
    • **Only available in South Dakota
    • Air-to-Air Exchangers
    • Heat Recovery Equipment
    • Certified Custom Panels
    • Fan Coil Units
    • Radiant & Convection Panels
    • Trench Heating & Cooling
    • Condensate Neutralizers
    • Industrial HVAC Air-Rotation Equipment
    • Warehouse HVAC Air-Rotation Equipment
    • Large, Open Space HVAC Solutions
    • Boiler Chemicals
    • Chemical Feed Equipment
    • Water Meters
    • **Only available in South Dakota
    • Industrial Chimney Products
    • No-Chase Grease Ducts
    • Free Cooling Chillers
    • Air Cooled Chillers
    • Water Cooled Chillers
    • Furnaces-Heat Pumps
    • Condo Pack
    • Ductless Splits
    • Dust Collection Systems
    • Fume Extraction Systems
    • Oil Mist Filter Systems
    • Glycol Feeders
    • Pot Feeders
    • Chemical Pumps
    • Automatic & Manual Balancing Valves
    • Pre-assembled Piping Packages
    • Hose Kits
    • Energy Recovery Wheels
    • Desiccant Wheels
    • Dehumidifiers
    • Cooling Tower Filtration
    • Hydrocyclone Separators
    • Custom pump packages
    • UL listed Cooling Tower control panels
    • Commercial ERV/HRV
    • Ice Storage Systems
    • Thermal Storage Systems
    • Variable Frequency Drive
    • Phase Converters
    • Registers
    • Grilles
    • Diffusers
    • VAV Boxes
    • Chilled Beams
    • Outdoor Ductwork
    • Control Dampers
    • Fire Dampers
    • Louvers & Dampers
    • Sound Control
    • Radiant Heaters
    • Air Curtains
    • HVLS Fans
    • Custom Air Handling Units
    • Spiral Duct
    • Sound Attenuators
    • Combustion Control Products
    • Parallel Linkageless Controls
    • Fin Tube Radiation
    • Cabinet Unit Heaters
    • Unit Heaters
    • Gas-Fired Radiant Heating Systems
    • Boiler Feeder Pumps & Receiver Tanks
    • Condensate Pumps & Tanks
    • Vacuum Pumps & Receivers
    • Laboratory Exhaust Systems
    • Axial Flow Fans
    • Energy Recovery Systems
    • Classroom Unit Ventilators
    • Expansion Tanks
    • Custom Designed Prefabricated, Pre-Insulated Containment Piping
    • Heat Transfer Equipment
    • Boiler Feed & Dearator Systems
    • Steam Specialty Equipment
    • Non-Electric Condensate Pumps
    • High-Efficiency, Copper-Finned Hot Water Boilers
    • **Only available in South Dakota
    • Flexible Connectors
    • Expansion Compensators
    • Draft Inducers
    • Specialty Fans
    • Dryer Duct Booster Fans
    • Ultraviolet Lamp Systems
    • Noise Control Products
    • Vibration Control Products
    • Silencers
    • Floating Floors
    • Combustion Equipment
    • Forced Draft Burners
    • Replacement Parts
    • Hot & Chilled Water Storage Tanks
    • Custom Tanks
    • **Only available in South Dakota
    • Variable Frequency Drives
    • Destratification Fans