Commercial Legionella Prevention for Cooling Towers in Fullerton (Daikin & Multi‑Brand)

At #1 AC Guys, our mission is healthy buildings and healthy people. In warm Southern California climates like Fullerton, cooling towers operate most of the year, which makes proactive Legionella prevention essential. We combine field engineering, chemistry, and controls expertise to keep your commercial towers cleaner, safer, and more efficient—without disrupting operations.

What we deliver

• ASHRAE 188–aligned Water Management Plans tailored to your building and occupancy
• Baseline and ongoing risk assessments, including equipment condition and drift control
• Routine water testing via accredited third‑party laboratories and actionable reporting
• Mechanical cleaning and tower disinfection (start‑up, routine, and corrective)
• Biocide and scale/corrosion control programs (oxidizing and non‑oxidizing) with verification
• Side‑stream filtration, basin sweeping, and conductivity‑based bleed optimization
• Automation, remote monitoring, and alarms integrated with your BMS where applicable
• Documentation, logs, and staff training to support inspections and audits
• Daikin and multi‑brand integration across water‑cooled chillers, VRV/VRF interfaces, and plant controls

Our engineered process

We start with a site survey of your towers, heat exchangers, pumps, strainers, and controls. We map water flow, make‑up sources, and seasonal loads, then define critical control points and set measurable limits. From there, we implement a balanced control strategy—biocide selection and rotation, scaling/corrosion inhibitors, bleed setpoints, and filtration—validated by routine testing and trend analysis. You receive clear reports with corrective actions, so you can demonstrate due diligence at any time.

When conditions require, our team performs deep cleaning and disinfection with isolation, neutralization, and safe return‑to‑service procedures. We schedule work to minimize downtime and coordinate with facility stakeholders to protect occupants and equipment. Our programs emphasize both risk reduction and energy/water efficiency, because a clean, well‑controlled tower runs better and costs less.

Daikin and multi‑brand compatibility

Whether you operate Daikin water‑cooled chillers, VRV systems tied to heat‑rejection equipment, or a mixed OEM plant, we align tower hygiene with your sequence of operations. We integrate setpoints and alarms with your BMS, coordinate with your chiller protections, and adjust control strategies to real‑world loads—helping you sustain capacity, uptime, and compliance.

Why #1 AC Guys

• Fourth‑generation family business with 80+ years of engineering experience
• Factory training completed at Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China)
• Specialists in large, complex commercial projects across healthcare, hospitality, education, and industrial
• Local to Fullerton and Orange County; rapid dispatch and 24/7 emergency response
• Transparent reporting, photo documentation, and inspection‑ready logs

Compliance and documentation

Our programs follow current industry guidance, including ASHRAE 188 and applicable OSHA/CDC recommendations, and are customized to local code expectations. We maintain water quality records, calibration logs, and service documentation to support your environmental health and safety objectives.

Service area

Headquartered in Greater Los Angeles, we serve Fullerton and all of Orange County, plus Los Angeles County, Ventura County, and Western Riverside County. Multi‑site portfolios welcome.

Get started

Request a same‑ or next‑day site assessment. We will review your towers, sample points, current treatment, and documentation, then propose a step‑by‑step plan with clear pricing and measurable outcomes.

Important note: No prevention program can guarantee the complete elimination of risk. We reduce and manage risk through engineering controls, monitoring, and best practices; laboratory testing is performed by accredited third parties as applicable.