Precision ClimateEngineered to Last
Top-tier commercial and industrial HVAC solutions — chillers, retrofits, and preventive maintenance handled by skilled technicians focused on one thing: keeping your systems running.
Commercial HVAC, Mastered
Commercial System Health Check
Full diagnostic inspection of your rooftop units, chillers, or boiler plant — refrigerant levels, electrical, airflow, and efficiency report included.
Built on Two Decades of Uptime
At JNC Mechanical Service Inc., we bring decades of hands-on experience serving Los Angeles & Orange County with top-tier commercial and industrial HVAC solutions. From energy management to mechanical retrofits, we handle every project with precision and a commitment to keeping your systems running smoothly.
Answered Straight
What areas do you serve?
We serve all of Los Angeles and Orange County — from downtown LA to Irvine, including Long Beach, Anaheim, Santa Ana, and everywhere in between.
Do you offer emergency HVAC service?
Yes — we offer 24/7 emergency response for commercial clients. Call (562) 644-2129 any time and a technician will be dispatched.
What types of systems do you work on?
Rooftop package units, chillers (air-cooled and water-cooled), cooling towers, boilers, hydronic systems, air handlers, condensers, and building automation controls.
Do you service chillers?
Absolutely — chiller service is one of our specialties. We handle compressor overhauls, teardowns, refrigerant management, and seasonal start-ups for plants of every tonnage.
How much does a service call cost?
Pricing depends on the system and issue, but we always diagnose first and quote upfront — no surprise invoices. Right now, new commercial clients can get a full system health check for $99 (regularly $249).
Do you offer maintenance contracts?
Yes — we build custom preventive maintenance programs with documented inspections, filter and belt programs, and priority emergency response for contract clients.
How long have you been in business?
JNC Mechanical Service Inc. brings 20+ years of hands-on commercial and industrial HVAC experience to every project, with 150+ satisfied clients across Southern California.
Are you hiring?
We're always looking for skilled HVAC technicians. Visit our Careers page or email JNCMechanical@yahoo.com with your experience.
Your System's Next 20 Years Start Here
One call connects you with technicians who've seen it all — and fixed it all. 24/7 Emergency Service — Office Mon–Fri 7am–5pm.