Thorsen's - Norquist, Inc.

Thorsen's-Norquist, Inc. has operated continuously since 1911 from 2310 N. Walnut Road in Turlock, CA, making it one of the oldest family-owned HVAC and plumbing businesses in the Central Valley. The company holds California Contractor License #688058 and maintains a 4.5-star average rating across 19 published reviews. Their service area encompasses Modesto and Turlock as primary hubs, with additional coverage extending to Ceres, Riverbank, Atwater, Oakdale, and surrounding Stanislaus and Merced County communities. Residential homeowners, light commercial properties, and industrial clients can all engage the same certified team for work under one roof.

What distinguishes Thorsen's-Norquist is the combination of in-house sheet metal fabrication and factory-authorized status under one roof, a pairing uncommon in the regional market. NATE-certified technicians conduct diagnostics and repairs across all major brands and system architectures, including variable-refrigerant-flow (VRF) multi-zone setups and geothermal heat pump installations. The company provides 24/7 emergency response for heating and cooling failures, while their in-house sheet metal shop fabricates custom duct sections and fittings without relying on third-party vendors. This means faster turnaround on duct repair and new construction projects compared to competitors who source components externally.

Customer reviews repeatedly highlight specific technicians delivering results beyond standard expectations. When a Turlock homeowner discovered their heater had failed on a same-day basis, Thorsen's-Norquist dispatched a technician who diagnosed and resolved the issue before end of business, earning a direct thank-you from the Borba family. A Modesto customer with two HVAC units consulted another local firm, but one compressor failed within a month of that service call, prompting them to switch to Thorsen's-Norquist for long-term reliability. At a commercial dealership in Turlock, eight large rooftop air conditioners have been maintained for years by the same crew, with technicians like Ruben and Dan noted for arriving on schedule and communicating clearly throughout each visit.