Commercial HVAC Projects
Chiller changeouts, RTU replacements, boiler replacements, and mechanical retrofits, managed from planning through startup by a single accountable team.
Commercial HVAC Projects
ACIS delivers commercial HVAC project services to facilities across Dallas, Fort Worth, and Houston, managing chiller changeouts, rooftop unit replacements, boiler replacements, and mechanical retrofits from planning through startup. Our teams bring the technical depth and project coordination that complex mechanical work demands, with a single point of accountability at every stage.
When equipment reaches end of life or a facility’s needs outgrow its existing systems, the right commercial HVAC contractor makes the difference between a smooth transition and a costly one. ACIS has been executing projects across the DFW metroplex and Houston market for over two decades, with factory-trained technicians and integrated trade capabilities that most mechanical contractors can’t match.
HVAC Project Services
Chiller Changeouts
Commercial chiller replacement requires careful coordination across mechanical, controls, and electrical systems. ACIS manages the full scope, equipment selection, rigging, piping modifications, BAS integration, and startup through a single accountable team. Our technicians are factory-trained on Carrier, Trane, York, McQuay, Daikin, Dunham-Bush, and Smardt equipment and experienced with both water-cooled and air-cooled chiller plants.
Before recommending a chiller replacement, our team evaluates at the component level, reviewing compressor internals, oil systems, VFD operation, refrigerant circuits, and heat exchanger performance. In many cases, what appears to be a failed chiller is actually a repairable issue. Our root-cause approach means clients avoid unnecessary capital expenditure when a targeted repair or rebuild can restore reliable operation and add years of service life.
Measurable outcomes from our chiller work include improved efficiency through condenser and evaporator performance optimization, reduced kW/ton through tube cleaning and refrigerant optimization, and a significant reduction in unplanned downtime through predictive maintenance and oil analysis programs.
Rooftop Unit (RTU) Replacements
RTU replacement projects range from straightforward one-for-one swaps to full redesigns addressing airflow, zoning, and controls. Our commercial HVAC technicians assess existing curb and ductwork conditions before recommending solutions, working across manufacturers and tonnage ranges, from small unitary equipment down to large-tonnage Intelipak units.
Boiler Replacements
Aging boiler systems create reliability and efficiency risks across commercial and institutional facilities. ACIS replaces hot water and steam boilers with modern, right-sized equipment and handles all associated pump, piping, and controls work, managing project logistics to keep heating disruptions minimal, particularly in healthcare, education, and multi-tenant environments.
Mechanical Retrofits & Retro Commissioning
Retrofit and modernization projects are an opportunity to improve building performance, reduce energy demand, and extend asset life. Whether modernizing equipment, redesigning ductwork, upgrading to Variable Air Volume (VAV) systems, or transitioning to Variable Refrigerant Flow (VRF), ACIS provides one source of accountability from planning through commissioning.
For facilities that don’t require full replacement, retro commissioning delivers measurable energy savings by validating and optimizing existing system performance, a high-value option for buildings where systems are underperforming but still serviceable.
Full Project Capability List
- Chiller replacement and additions — water-cooled and air-cooled
- Rooftop unit (RTU) replacement across all tonnage ranges
- Boiler replacement and hot water system upgrades
- Air handler unit replacement and additions
- Cooling tower retrofits, replacements, and additions
- Variable Refrigerant Flow (VRF) system installation
- Variable Air Volume (VAV) terminal system upgrades
- Ductwork modifications and replacement
- Make-up air systems
- Retro commissioning and system performance validation
- Data center HVAC — CRAC/CRAH replacement and critical cooling
- Humidification and dehumidification systems
Single-Source Project Accountability Across All Trades
Complex commercial HVAC projects rarely involve mechanical work alone. ACIS integrates HVAC, building automation, electrical, and plumbing services through a single-source model, eliminating the coordination delays and accountability gaps that come with managing multiple contractors. Facilities across Dallas, Fort Worth, and Houston rely on this approach to keep projects on budget, on schedule, and fully commissioned.
Industries & Facility Types Served
ACIS executes HVAC projects across healthcare campuses, Class A office buildings, education facilities, industrial operations, government buildings, and data centers. For data center HVAC companies evaluating critical cooling contractors, our teams understand the uptime and redundancy requirements that make these projects different from standard commercial work, including CRAC and CRAH replacement and chilled water plant upgrades for high-density environments.
Why Facilities Choose ACIS
- Experienced project management from assessment through startup
- Factory-trained technicians on Carrier, Trane, York, and McQuay
- Integrated HVAC, BAS, electrical, and plumbing capabilities
- Transparent project communication and electronic documentation
- Active in Dallas, Fort Worth, and Houston markets
- 24/7 support following project completion
Our Safety Promise
On every job and throughout every day, we champion safety with our team. Our in-
house safety officers are ASP-certified (Associate Safety Professional) and lead job site
visits, monthly safety training sessions, and new-hire training to ensure our team
adheres to OSHA guidelines and looks out for one another so everyone can return
home safely.