Commercial & Industrial Plant Cooling in Ontario, CA

What We Deliver

Mission‑critical cooling is non‑negotiable in manufacturing. Our Ontario, CA commercial HVAC team designs, installs, retrofits, and maintains industrial plant cooling systems that keep processes stable, employees safe, and operating costs predictable. From greenfield projects to fast‑track retrofits, we provide engineered solutions with documented performance and clean, healthy air—because healthy air supports healthy, productive teams.

Systems We Engineer & Service

Industrial chillers (air‑cooled and water‑cooled), cooling towers, fluid coolers, heat exchangers, process pumps, and glycol hydronic loops; VRF/VRV for large commercial and light‑industrial applications (factory‑trained on Mitsubishi Electric and Fujitsu), ductless split systems for control rooms and labs, rooftop packaged units, make‑up air and exhaust, dehumidification and reheat, high‑efficiency filtration and IAQ upgrades (MERV/HEPA where required), and smart controls: BAS integration, VFD optimization, sensors, alarming, and remote monitoring. We support new installations, expansions, plant relocations, and performance‑driven retro‑commissioning.

Industries & Use Cases

Food & beverage production and cold rooms, plastics and injection molding, machine shops and CNC cooling, printing and packaging, aerospace composites and precision assembly, pharmaceuticals and clean areas, warehouses and distribution, and commercial facilities with high sensible loads or sensitive processes. Whether the goal is tight process temperature control, humidity management, or improved air quality for worker health, we fine‑tune solutions to your line, shift schedule, and quality targets.

Design‑Build Expertise

Our fourth‑generation engineering team performs load calculations, energy modeling, equipment right‑sizing, and duct/hydronic design tailored to real‑world conditions on your floor. We coordinate structural, electrical, and controls, prepare permit‑ready documents, and commission systems with verified setpoints and trend logs. Need speed? We stage equipment and phasing to minimize downtime—often implementing temporary cooling to keep production live.

Retrofits That Pay Back

Replace aged chillers or towers, add VFDs, improve heat recovery, tighten controls, or convert to VRF where appropriate. We target total cost of ownership: energy use, maintenance, and reliability. Our team helps identify and document potential utility incentives and supports Title 24 compliance to accelerate ROI while meeting California’s stringent energy codes.

Reliability, Safety, and Compliance

We build to industry best practices and applicable standards, including ASHRAE guidelines, California Title 24 energy code, and EPA refrigerant management requirements. We implement lockout/tagout procedures, ventilation strategies, and sensor/alarm integrations appropriate to your space. Our commissioning checklists and owner training ensure your staff can confidently operate and maintain each system. For IAQ, we deploy filtration, ventilation rates, and monitoring that support clean, healthy air throughout your plant.

Preventive Maintenance & 24/7 Response

Programmed PM protects uptime: chiller and tower cleaning, water treatment coordination, vibration checks, leak detection, oil and refrigerant analysis, filter changes, and controls calibration. When the unexpected happens, our 24/7 emergency team responds fast with stocked vehicles, OEM‑backed practices, and root‑cause troubleshooting to get you back online.

Why #1 AC Guys

Family‑owned, fourth‑generation HVAC engineers with 80+ years of cumulative engineering experience. Factory‑trained by leading manufacturers including Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea, Gree, and Haier. We specialize in large, complex commercial and industrial projects—and we stand behind our work with transparent scopes, clear timelines, and measurable results. Our mission is simple: healthy air and precise cooling for a healthier, more productive workplace.

Local to Ontario, Serving Greater SoCal

We proudly serve Ontario, CA and surrounding Southern California markets: Los Angeles County, Orange County, Ventura County, and Western Riverside County. If your facility sits in the Inland Empire or greater LA region, our proximity means faster site visits, quicker parts logistics, and shorter downtime.

Your Next Step

Get a same‑day on‑site assessment for your commercial and industrial plant cooling needs in Ontario. We’ll document loads, evaluate current assets, and present a clear, code‑compliant plan—whether you need a new process chiller, a cooling tower retrofit, VRF expansion, or a maintenance program that stabilizes uptime and IAQ. Contact #1 AC Guys to schedule, or request 24/7 emergency service now. Keep your lines running and your air healthy—reliably, efficiently, and safely.