Commercial Office Building HVAC Services in Los Angeles

At #1 AC Guys, we bring engineering-first discipline to commercial HVAC for office buildings. Our team plans, executes, and supports systems that balance comfort, air quality, and efficiency for modern workplaces from creative studios to multi-tenant towers. We understand the demands of occupied spaces, tight timelines, and the need to minimize disruptions while maximizing performance.

Comprehensive office HVAC services

• Design-build and plan-spec execution for new construction and tenant improvements
• VRF and ductless systems for flexible zoning and fast fit-outs
• High-efficiency rooftop and packaged units, economizers, and demand control ventilation
• Ventilation and IAQ upgrades: MERV 13+ filtration, ERV, UV-C, and CO2-based control strategies
• Controls and BMS integration for better scheduling, zoning, and monitoring
• Central plant and hydronic support where office campuses require it
• Server room and critical space cooling solutions
• Commissioning, testing, adjusting, and balancing for verified performance
• Preventive maintenance programs to stabilize comfort and extend equipment life

Whether you are retrofitting an existing floor, phasing a multi-level upgrade, or setting standards for a full building, we deliver a clear path from concept to commissioning.

Our process: precise, transparent, and built for occupied buildings

We start with a detailed site assessment and load analysis, then translate findings into a practical sequence of operations. You receive a transparent proposal with options, payback insights, phasing plans to limit downtime, and a realistic schedule. During execution, our team coordinates with property managers, facility teams, and GCs to protect tenants, maintain safety, and keep your building operational.

We prioritize energy performance, comfort, acoustics, and air quality. Where appropriate, we incorporate strategies such as heat recovery, optimized ventilation rates, and smart control curves to reduce peak demand and improve occupant experience.

Expertise for complex and large-scale projects

Our engineers thrive on challenging projects across Los Angeles County and nearby areas. From historic office conversions and dense tenant build-outs to mixed-use campuses, we engineer workable, code-aligned solutions that fit real-world constraints. Need quiet operation, tighter temperature bands, or enhanced filtration without major duct modifications? We solve those details every day.

• High-rise and mid-rise office towers
• Multi-tenant and co-working floors
• Creative and media production offices
• Medical office suites and sensitive spaces
• Historic structures and adaptive reuse

Factory-trained know-how where it matters

Our team has factory training with Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). That means sharper diagnostics, better commissioning, and system optimization aligned with manufacturer best practices for modern VRF and ductless technologies. We also work effectively with the wide range of systems commonly found in LA office buildings, helping owners protect investments and stabilize operating costs.

Health-first indoor air quality

Our mission is simple: healthier air for healthier lives. We help offices adopt practical IAQ measures—right-sized ventilation, upgraded filtration, UV-C where appropriate, and smart control logic that reacts to real occupancy. The result is cleaner air, more consistent comfort, and a better environment for focus and productivity.
We can assess current conditions and recommend staged improvements that fit budgets and timelines.

Local coverage across Greater Los Angeles

We proudly serve Los Angeles County and nearby Orange County, Ventura County, and Western Riverside County. Whether your property is in Downtown LA, Westside, San Fernando Valley, Pasadena, Long Beach, Irvine, Anaheim, Oxnard, Thousand Oaks, or Corona, our team can support your office facility with responsive service and careful coordination.

Why #1 AC Guys

• 4th-generation family of engineers with 80+ years in engineering
• Deep specialization in commercial office HVAC and complex projects
• Factory-trained on leading VRF and ductless platforms
• Clear scopes, clean installations, and measurable performance
• Phased work plans for occupied buildings
• Dedicated to healthier indoor air and long-term value

Get started

Elevate comfort, air quality, and efficiency in your office building with #1 AC Guys. Contact us to schedule an on-site assessment, discuss goals, and receive a tailored plan for design, retrofit, or maintenance.