Contact us!
(815) 494-9090


Geostar Mechanical is a commercial contractor serving Northern IL and Southern WI that specializes in Heating, Cooling, Refrigeration and Plumbing. Why worry about calling one company for your plumbing needs, another company for your heating and cooling, another for your walk-in cooler and finally another company to test your backflow preventer devices. Geostar Mechanical is here to service all of your mechanical needs.

Geostar Mechanical was founded in March of 2008. The company was started and has always been based on the philosophy of providing exceptional service at a fair price. Geostar Mechanical is based out of Rockford, IL, but our service area includes all of Northern IL and Southern WI. Give us a call today to see how we can manage all of your mechanical needs.

As a symbol of our commitment to quality, we hold the following certifications and licenses:


    • Aerco Boilers Certified Installer and Start-up
    • UA S.T.A.R. Certification- our technicians have completed a stringent 5-year training program and certification exam
    • Certified Rapid Engineering factory training
    • National EPA certification in refrigeration including 410A
    • Carrier factory trained in centrifugal and screw liquid chillers
    • Factory authorized technicians for Rapid HVAC Equipment
    • IGSHPA trained and certified in geothermal installations and solar hot water heating
    • B&G factory trained in steam and hot water design and installation
    • UA certified in MIG, TIG, and stick welding including carbon steel, stainless steel, and aluminum welding
    • Multiple city / municipality licenses for HVAC, plumbing, and backflows


Thank you for checking into Geostar Mechanical and we look forward to serving all of your mechanical needs!