Commercial Rooftop Unit (RTU) Installation in Rialto, CA

Engineered RTU Installations Built for Rialto Businesses

Your rooftop unit is the heart of your building’s comfort, ventilation, and air quality. We engineer every installation to meet Rialto’s climate, California energy code (Title 24), and the realities of your facility—hours of operation, occupancy, internal loads, filtration needs, and future maintenance access. As a 4th‑generation family of engineers with 80+ years in engineering, we thrive on complex projects where precision matters.

Our End‑to‑End Commercial RTU Process

• Site and Load Assessment: ACCA Manual N‑based load calculations, rooftop structural review, electrical capacity check, and duct static analysis.
• Design‑Build Engineering: Unit selection (capacity, gas/electric or heat‑pump), economizer strategy, DCV with CO2, IAQ objectives, controls specification, and curb adapter design.
• Permitting & Code: Title 24 compliance forms, mechanical/electrical plans, seismic anchorage details, and city submittals. We coordinate inspections to keep you on schedule.
• Crane & Logistics: Street access planning, safety staging, lift plan, and precise crane‑set of the RTU and curb adapter with minimal downtime.
• Installation & Integration: Gas piping, condensate management, electrical/disconnects, economizer sensor placement, smoke detectors where required, and airtight duct transitions.
• Controls & Commissioning: BAS integration, VFD setup, ventilation balancing, thermostat zoning, and full functional performance testing with documented results.
• Turnover & Warranty: Training your team on operation and maintenance, as‑built documentation, and clear warranty terms for equipment and labor.

Healthy Air for a Healthy Life

Our mission drives every decision we make. We specify IAQ features that matter in the Inland Empire: high‑efficiency MERV‑13 filtration for particulate, UV‑C options for coil and airstream applications, demand control ventilation to maintain fresh air intelligently, and economizers to leverage outdoor air when conditions permit. We balance ventilation with energy savings so your teams breathe better without sacrificing your utility budget.

Energy Efficiency and Controls

Modern RTUs offer powerful ways to cut costs while improving comfort. We configure:

• Economizers and Free Cooling: Outdoor air strategies that reduce compressor run time when conditions allow.
• Demand Control Ventilation: CO2 sensors modulate ventilation for real‑time occupancy, reducing energy waste.
• VFDs and Staged Capacity: Right‑sized airflow and capacity for quieter, smoother operation and lower peaks.
• Smart/BAS Integration: Seamless connection to your building automation with trend logging and remote alerts.

The result is a system that pays you back with lower energy bills, steadier temperatures, and longer equipment life.

Built for Rialto’s Climate and Operations

Hot summers, dust from winds, and mixed occupancy patterns require resilient design. We address filtration upgrades, coil protection, operations‑friendly access clearances, and service pathways so maintenance is fast and safe. We also plan start‑up to avoid disrupting business—off‑hours crane lifts and phased cutovers keep your doors open.

What’s Included in a Typical RTU Installation

• Load calculations and equipment right‑sizing
• Crane lift with curb adapter fabrication
• Seismic bracing, gas/electric, and condensate
• Economizer, DCV sensors, and smoke control where required
• Duct transitions, sealing, and airflow balancing
• Controls programming and BAS integration
• Title 24 documentation and inspection support
• Commissioning checklist and operator training

Factory‑Trained Expertise You Can Trust

Our team is factory‑trained at Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). That hands‑on manufacturer training informs our approach to selection, setup, controls tuning, and serviceability—so your new rooftop unit delivers reliable comfort from day one.

Sectors We Serve

• Retail and Shopping Centers: Even temperatures, clear storefront sightlines, quiet operation.
• Offices and Municipal: Zoned comfort, clean air, smart scheduling.
• Warehouses and Light Industrial: Ventilation for process heat and loading docks, robust filtration.
• Healthcare and Education: Tight IAQ targets, monitoring, and documentation.
• Restaurants and Fitness: Ventilation balance, humidity control, and rapid recovery.

Transparent Proposals, Clean Execution

We provide a clear scope, options for efficiency and IAQ, firm timelines, and line‑item pricing. On site, we protect finishes, adhere to safety protocols, and document progress. After commissioning, you receive as‑builts, control sequences, and a maintenance plan tailored to your hours and occupancy.

Why #1 AC Guys

• 4th‑generation family of engineers with 80+ years of engineering expertise
• Specialists in large and complex commercial RTU projects
• Mission‑driven focus on healthy indoor air
• Design‑build delivery from concept through commissioning
• Local, responsive service for Rialto and the Inland Empire

Ready to upgrade your rooftop AC? Get a free on‑site assessment in Rialto and a custom proposal that aligns performance, IAQ, and budget. #1 AC Guys—engineered comfort, delivered with care.