Thorsen's - Norquist, Inc.

Thorsen's-Norquist, Inc. has operated continuously since 1911, making it one of the oldest HVAC and plumbing contractors in California's Central Valley. Based at 2310 N. Walnut Road in Turlock, the company holds California Contractor License #688058 and maintains an exceptional 4.8-star rating across 505 Google reviews. Serving Modesto, Turlock, Ceres, Riverbank, Atwater, Oakdale, and surrounding communities, this third-generation family business offers residential, light commercial, and commercial HVAC installation, service, repair, and maintenance alongside full plumbing and rooter services.

What distinguishes Thorsen's-Norquist from regional competitors is its breadth of in-house capabilities. The company maintains a full sheet metal fabrication shop for custom ductwork and reduced pressure valves, offers geothermal heating systems and variable refrigerant flow (VRF) installations common in new construction, and provides specialized services including attic insulation, boiler installation, and ductless mini-split systems. Their 24/7 emergency availability with factory-authorized technicians ensures customers avoid the prolonged discomfort common during Central Valley summers when systems fail.

Customer reviews repeatedly highlight specific team members who deliver above-and-beyond service. Reviewer Hassaan Irshad praised technician Irvin for arriving on time, explaining every diagnostic step, wearing boot covers to protect floors, and performing a full maintenance inspection. Lee Marchant noted technician Rick (ID 1358) spent three and a half hours thoroughly checking a/c units across three commercial locations, calling him the most thorough technician in decades of service. For complex commercial plumbing issues that stumped other companies, reviewer A P credited Juan with finding solutions others could not resolve.