• Service Calls: (678) 966-0094

Comprehensive Commercial and Industrial Mechanical Services in Metro Atlanta

Willis Mechanical provides full-service commercial HVAC, refrigeration, and plumbing service and maintenance for occupied facilities across Metro Atlanta. Our service department also delivers preventive maintenance programs, chiller service, laser alignment and vibration analysis, and transparent, competitive pricing. With over 25 years of experience, responsive dispatch, and the capacity to support multi-location and large, complex facilities, we are equipped to keep your building systems reliable, efficient, and compliant.

Full-Service Commercial and Industrial Mechanical Service in Metro Atlanta

Willis Mechanical provides professional HVAC, refrigeration, and plumbing service and maintenance for commercial and industrial facilities across Metro Atlanta. We specialize in supporting occupied buildings, mission-critical environments, and large, complex systems where reliability, safety, and fast response are essential.

Our service department is built to support everything from routine preventive maintenance to advanced diagnostics and emergency repairs. Whether you operate office buildings, healthcare facilities, data centers, manufacturing plants, cold storage, grocery, or multi-site portfolios, we deliver the staffing, experience, and technical depth required to keep your operations running.

Commercial HVAC Service and Maintenance

We service and maintain all major commercial HVAC systems, from rooftop units and split systems to central plants and large chilled-water systems. Our technicians perform:

  • Preventive maintenance programs
  • Advanced troubleshooting and repairs
  • Equipment replacements and retrofits
  • Air distribution and airflow corrections
  • Chiller service and system optimization
Our goal is to reduce downtime, extend equipment life, and improve system efficiency while minimizing disruption to your facility.

Industrial and Commercial Refrigeration Service (Including CO₂ Systems)

Willis Mechanical provides full-scope refrigeration service for both commercial and industrial applications, including modern transcritical CO₂ refrigeration systems. Our refrigeration capabilities include:

  • Rack refrigeration systems
  • Walk-in coolers and freezers
  • Process and industrial refrigeration
  • CO₂ transcritical systems
  • Leak detection, performance optimization, and compliance support
We understand that refrigeration failures can quickly become business-critical events. Our teams are equipped to respond rapidly and resolve issues safely and correctly the first time.

Commercial Plumbing Service and Repairs

Our plumbing service division supports commercial and industrial facilities with professional plumbing maintenance and repair services, including:

  • Domestic water systems
  • Drain and sewer service
  • Fixture repairs and replacements
  • Backflow support and system troubleshooting
  • Emergency leak response
We focus on minimizing downtime, protecting your facility, and preventing small issues from becoming major disruptions.

Preventive Maintenance Programs That Protect Your Assets


Preventive maintenance is the foundation of reliable mechanical systems. Our customized maintenance programs are designed to:

  • Reduce unexpected failures
  • Extend equipment lifespan
  • Improve operating efficiency
  • Support budgeting and capital planning
We tailor maintenance schedules and task scopes to your specific equipment, facility type, and operational priorities.

Specialized Services for Large and Complex Facilities

In addition to core HVAC, refrigeration, and plumbing service, Willis Mechanical offers specialized services that support high-value and high-load mechanical systems, including:

  • Chiller service and plant support
  • Laser alignment of rotating equipment
  • Vibration analysis and condition monitoring
These services help identify developing problems early, improve reliability, and reduce costly unplanned outages.

Built for Multi-Location and Mission-Critical Operations

Many of our customers operate multiple facilities or depend on continuous mechanical uptime. Our service organization is structured to support:

  • Multi-location service agreements
  • Coordinated preventive maintenance programs
  • Rapid emergency response
  • Consistent service standards across portfolios
With experienced technicians, responsive dispatch, and strong logistical support, we provide the scale and reliability required by growing organizations and critical facilities.

Vibration Analysis & Laser Alignment

We provide precision vibration analysis and laser shaft alignment to improve equipment reliability, reduce wear, and prevent unexpected failures. These services help identify developing mechanical issues early, extend the life of motors and rotating equipment, and reduce energy consumption and maintenance costs in critical systems.

Things those other guys won’t put on their website:

Upfront Pricing

How much does all this cost? Everything we do is based on our hourly rates. Unlike literally everyone else, we are happy to share our hourly rates with you. We have nothing to hide.

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Log into our customer portal to place service calls, download your equipment list, view work history, work tickets, quotes, and more.

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WINTER STORM WARNING: Severe winter weather incoming,  followed by a week of low temperatures. Prepare NOW! with our plumbers and HVAC technicians.

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