Thorsen's - Norquist, Inc.

Thorsen's-Norquist, Inc. operates as a full-spectrum HVAC and plumbing contractor serving Modesto and Turlock, California. With a near-perfect 4.9-star rating compiled from 523 customer reviews, the company has earned a reputation for responsive, thorough service across both residential and light commercial properties. The business maintains 24-hour availability every day of the week, a practical feature for Central Valley homeowners facing triple-digit summer temperatures or unexpected system failures. All service vehicles carry NATE-certified technicians capable of diagnosing and repairing heating and cooling equipment across all major brands.

What distinguishes this contractor from neighboring providers is its vertically integrated service capacity. The company operates an in-house sheet metal fabrication shop, enabling custom ductwork modifications and Same-DayParts inventory for urgent repairs rather than waiting for third-party suppliers. Their service menu extends into indoor air quality solutions including advanced filtration, ventilation upgrades, and UV purification systems alongside traditional heating and cooling. For properties requiring specialized comfort systems, the team installs geothermal heat pumps, variable refrigerant flow (VRF) multi-zone setups, and integrates WiFi-enabled smart thermostats with major home automation platforms. Both residential plumbing and commercial-scale boiler services fall under their scope, allowing property owners to consolidate vendors for multiple building systems.

Customer reviews consistently name specific technicians who delivered beyond-standard service levels. Reviewer Hassaan Irshad described technician Irvin arriving on time, explaining the diagnostic process step-by-step, and taking precautions including wearing boot covers to protect flooring, an attention that sold the reviewer on continuing a maintenance agreement. Another reviewer, Lee Marchant, documented technician Rick servicing three commercial locations over three hours while providing detailed explanations of each test performed and flagging components likely needing future replacement. For complex business HVAC challenges, reviewer A P credited technician Juan with solving issues that multiple other service providers could not resolve.