Chicago and Beyond

With a dedicated service division, ThermFlo supports all major brands of industrial power and thermal equipment with preventative maintenance and rapid-response repair capabilities throughout Chicagoland, Northern Illinois and Northwest Indiana. We provide complete, mission-critical power and cooling solutions for commercial and industrial facilities that keep operations running without interruption.

Your Partner in Mission-Critical Facility Support Throughout Chicagoland and beyond

We understand your key needs: operating at peak efficiency, simplifying costs, ensuring business continuity, and future-proofing your infrastructure. That’s why we offer full-service contracts, fixed-cost preventive maintenance, and 24/7/365 emergency response—backed by a highly trained team with decades of experience. One partner. Total system coverage.

Cooling Confidence – HVAC Service Support

ThermFlo delivers comprehensive HVAC services for datacenters, and commercial and industrial facilities, specializing in mission-critical environments like data centers. Servicing HVAC equipment throughout Chicago, Northern Illinois and Northwest Indiana, we ensure your systems operate efficiently, reliably, and in compliance with manufacturer standards.

Our HVAC technicians average 14 years of experience and undergo rigorous union training, including over 900 hours of classroom instruction and 8,000 hours of on-the-job training. With nearly 30 technicians and 24/7/365 availability, we offer true peace of mind—whether it’s emergency service, preventive maintenance, or turnkey installations.

We work on ALL brands and provide tailored service agreements that align with your operational goals. Our inspections are thorough, our response times are fast, and our solutions are built to scale with your business. From rooftop units and chillers to humidification systems and energy-efficient upgrades, ThermFlo is your trusted partner in uptime and long-term performance.

Power You Can Count On – Generator Service Support

ThermFlo’s generator service team is the authorized and certified industrial dealer for Generac Industrial Energy products in Chicago, Northern Illinois and Northwest Indiana. We offer a full suite of generator services not only on Generac products but also ALL brands, including Rehlko/Kohler, CAT, Cummins and more—from installation and startup to remote monitoring and preventive maintenance.

Our service agreements are designed to align with your operational priorities, offering full coverage or maintenance-only options with preferred rates and priority response. Our EGSA-certified technicians are re-certified every two years and our service vehicles are fully stocked to handle a multitude of service issues. We handle all warranty issues in our region and maintain direct access to manufacturer support, ensuring fast and accurate service resolution.