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JNC MECHANICAL
Service Inc.
Commercial HVAC

Service & Repair

Quick, reliable repairs that keep systems running.

Service & Repair performed by JNC Mechanical in Los Angeles and Orange County

When a commercial system goes down, the cost is not the repair, it is the hours the building is unusable. Our repair work is organized around getting an accurate diagnosis quickly and giving you a number before we start, so the decision is yours and the invoice is not a surprise.

We work on all makes and models. Technicians carry common commercial parts, and where a part has to be ordered we tell you the lead time up front instead of leaving the job open. Same-day diagnostics are the norm for calls that come in during business hours, and 24/7 emergency dispatch covers after-hours and weekend failures.

Repairs are warranty-backed. If something we replaced fails, we come back. That is also why we push back on repairs that do not make economic sense: on a unit near end of life, we would rather quote the replacement honestly than sell a repair that buys three months.

What this service covers

  • Same-day diagnostics on business-hours calls
  • 24/7 emergency dispatch for commercial accounts
  • All makes and models of commercial equipment
  • Compressor, motor, blower, and bearing replacement
  • Refrigerant leak detection and repair
  • Electrical, contactor, capacitor, and control board troubleshooting
  • Upfront written pricing before work begins
  • Warranty-backed workmanship

Call us when

  • A unit is down and the space is unusable
  • A breaker keeps tripping on a rooftop or condensing unit
  • There is water where there should not be water
  • The system runs but no longer cools or heats to setpoint
  • You were quoted a repair and want a second opinion before approving it

Service & Repair questions

How much does a commercial HVAC service call cost?

It depends on the system and the fault, so we diagnose first and quote the repair upfront rather than working open-ended. New commercial clients can currently get a full system health check for $99, regularly $249.

Do you charge extra for after-hours or weekend calls?

After-hours emergency work is priced differently than a scheduled business-hours call. We tell you the rate when you call, before dispatching, so there is no surprise on the invoice.

Will you tell me if a repair is not worth doing?

Yes. On equipment near end of life we quote the repair and the replacement side by side and tell you which one we would choose. A repair that buys three months on a failing unit is not a good outcome for either of us.

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