Who We Are
South Side Control Supply Co. is a family-owned HVAC/R controls distributor headquartered in Chicago, Illinois. Founded in 1907, we support commercial HVAC contractors with expert technical knowledge, deep inventory, and responsive service.
For over a century, we have specialized in solving complex HVAC and building automation challenges by pairing manufacturer-leading products with real engineering expertise.
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What We Do
We supply HVAC/R controls, burners, boilers, valves, sensors, and industrial automation components used in commercial and institutional buildings.
Our primary customers are mechanical contractors who rely on us for application guidance, project support, and reliable product availability.
Why Contractors Choose South Side Control
• Over 115 years of HVAC/R industry experience• Highly knowledgeable sales and engineering teams
• Commercial HVAC and controls specialization
• Strong manufacturer relationships
• Large, ready-to-ship inventory
• Eleven convenient Midwest locations
• 24/7/365 emergency after-hours support
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Our History
1907: Jensen Electric Co. was founded by Victor Jensen, a 22 year old Danish immigrant.
1940s: South Side Electric Supply Co. was established so that Victor, an electrician, could purchase copper during World War II.
1950s-1960s: Victor’s youngest son Norton, an engineer, joined and expanded the business into HVAC controls, which were relatively new at the time. Norton took interest in a new technology made by Honeywell called Series 90. The 135 ohm resistance based system provided modulating control without the need for a pneumatic system. Although its popularity has declined, Series 90 is still being used in buildings today.
1969: South Side Control Supply Co. moved (there was only one branch!) from 5910 South Halsted Street to our current location at 488 North Milwaukee Avenue.
1995-Present: Eric Jensen, Norton’s son, joined the company, overseeing our expansion to 11 strategic locations.
