Commercial Gree Rooftop Unit (RTU) Installation in Los Angeles

When your commercial rooftop unit reaches the end of its life—or your building demands better comfort, ventilation, or efficiency—#1 AC Guys delivers a fully engineered Gree RTU solution tailored to Los Angeles climate realities. Our fourth‑generation family of engineers applies 80+ years of engineering expertise to design, install, and commission rooftop systems that perform quietly, efficiently, and reliably.

Why choose a Gree RTU for your building

Gree rooftop units combine robust build quality with smart controls and high efficiency options that fit California energy codes. For LA properties, that means dependable cooling during heat waves, strong dehumidification, and flexible ventilation strategies that support healthy indoor air while managing utility costs.

• High efficiency options to support Title 24 and utility incentive pathways
• Reliable performance for offices, retail, restaurants, and warehouses
• Modern controls integration, economizers, and DCV (demand control ventilation)
• Serviceability for lower lifecycle cost

Our team is factory‑trained at manufacturer facilities: Gree (China), Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), and Haier (China). That training, paired with our engineering discipline, helps ensure installations are done right the first time.

Turnkey RTU installation—engineered process

• Site and load assessment: We verify roof access, structural and electrical conditions, and calculate actual loads to select the right tonnage and options.
• Equipment selection: We match your building’s needs with the proper Gree model, airflow profile, filtration, and economizer/DCV strategy.
• Permitting and Title 24 compliance: We prepare documentation, coordinate inspections, and align with California energy code requirements.
• Crane lift and safety plan: Detailed rigging plans, traffic/tenant coordination, and insurance compliance for a smooth, safe lift.
• Curb adapters and duct transitions: Custom adapters to fit your existing roof curb and maintain correct airflow and static pressure.
• Electrical and controls: Power, disconnects, sensors, CO2 integration for DCV, and BMS tie‑in where needed.
• Start‑up and commissioning: Factory‑aligned checklists, refrigerant charge verification, airflow balancing, control sequences, and documentation.

This end‑to‑end approach minimizes downtime and provides a transparent path from proposal to punch‑list completion.

Healthy indoor air—our core mission

We believe healthy indoor air supports a healthier life. In commercial spaces, that means the right mix of outside air, high‑efficiency filtration, and stable temperature/humidity control. We design RTU solutions that can include:

• Economizers and demand control ventilation to bring in fresh air efficiently
• High‑MERV filtration options for cleaner indoor air
• Precision airflow setup to reduce hot/cold spots and drafts

The result is a comfortable environment that helps teams focus and customers stay longer—without wasting energy.

Industries we serve

• Office and co‑working spaces
• Retail and mixed‑use
• Restaurants and food service
• Warehouses and light industrial
• Medical and professional suites
• Multi‑tenant buildings

Complex rooftops are our specialty

From tight urban sites requiring night lifts to occupied buildings that demand phased changeouts, we plan meticulously. We coordinate with property managers, tenants, and adjacent businesses to minimize disruption and keep your schedule predictable.

What to expect with #1 AC Guys

• Clear scopes and options so you can choose what fits your budget and goals
• Detailed timeline and lift coordination to reduce downtime
• Code‑compliant installs aligned with manufacturer standards
• Thorough commissioning with documented results
• Owner training and maintenance guidance for long‑term reliability

Title 24 and documentation made simple

We align equipment selection and control sequences to California Title 24 requirements. Our documentation supports plan check and inspections, helping keep your project moving.

Frequently asked questions

How long does a typical RTU replacement take?
Most single‑unit replacements can be completed in 1–2 days after permitting and curb adapter fabrication. Multi‑unit projects are phased to maintain operations.

Do I need a new curb?
Often, a curb adapter lets us fit the new Gree RTU to your existing curb while preserving airflow and drainage. We verify in the field and design adapters as needed.

Will the new unit be quieter or more efficient?
In most cases, yes. Modern Gree RTUs and correct commissioning improve sound levels and efficiency. Results depend on sizing, ductwork, and control strategies.

Can you integrate with our building management system?
Yes—where supported, we coordinate controls and sensors, including CO2 for demand control ventilation.

What about rebates or incentives?
Program availability varies. We can help identify potential utility incentives related to efficiency and controls.

Service area

We serve Los Angeles County and nearby areas, including Orange County, Ventura County, and Western Riverside County.

Why #1 AC Guys

• Fourth‑generation family of engineers with 80+ years of engineering expertise
• Factory‑trained by Gree, Fujitsu, Mitsubishi Electric, Midea, and Haier
• Proven on large and complex commercial rooftop projects
• Mission‑driven focus on healthy indoor air and long‑term performance

Ready to upgrade your building with an engineered Gree rooftop solution? Contact #1 AC Guys to schedule a site visit and receive a detailed, no‑pressure proposal.