Service · HVAC
HVAC maintenance, repair, and replacement
Commercial and industrial HVAC — planned maintenance, fast repairs, and equipment replacement that keep facilities online. Separate from refrigeration.
When comfort and air systems fail, you need a crew that shows up and finishes. Willis Mechanical services, repairs, and replaces commercial and industrial HVAC across Metro Atlanta — from a single rooftop call to multi-unit support — without treating HVAC as the same discipline as refrigeration or chillers.
Service area: commercial HVAC across Metro Atlanta, including Marietta, Kennesaw, Alpharetta, Roswell, Duluth, Lawrenceville and McDonough, out to Cartersville, Gainesville, Athens and Newnan, and beyond for larger commercial and industrial clients.
This page is HVAC — not refrigeration or chillers. For cold rooms, freezers, food process, and CO₂ racks, see Refrigeration. For chilled-water plants and process loops, see ChillersBoilers.
What HVAC covers here
- Planned maintenance that keeps commercial and industrial HVAC online
- Diagnostics, repair, and replacement for rooftop units, air handlers, split systems, and packaged equipment
- Emergency response when a unit fails and the building cannot wait until Monday
- Equipment upgrades and replacements when repair is no longer the right path
- Support across owner-occupied sites and multi-location portfolios
How we work
- Find the fault, fix it, and document what changed
- Coordinate around occupied buildings and live operations
- Plan replacements and upgrades to limit downtime
- Escalate into renovations, retrofits, or special projects when the scope outgrows a service call
- One accountable Metro Atlanta team from the first call through the handoff
Where it applies
- Commercial buildings and campuses with rooftop or central air systems
- Industrial facilities that need HVAC reliability alongside process equipment
- Hospitals, data-adjacent spaces, and other critical environments where comfort systems matter
- Owner-operated Metro Atlanta sites that want one mechanical team on HVAC
Renovations, retrofits & special projects
HVAC work often grows into phased renovations and retrofits in facilities that already run: unit replacements, zone upgrades, and special projects scoped around uptime. We are not framing this as ground-up construction — we work the systems owners already operate.
HVAC FAQ
Do you handle emergency HVAC calls in Metro Atlanta?
Yes. Call or text (678) 966-0094 24/7. A person on the Willis team routes the response — not a ticket black hole.
Is HVAC the same as chillers or refrigeration?
HVAC here is airside and packaged commercial/industrial systems. Plant chillers are on ChillersBoilers. Low-temp cold storage and CO₂ are on Refrigeration / CO₂.
Can you replace rooftop or air-handler equipment in an occupied building?
Yes. Replacements and upgrades are scoped as renovations and retrofits around live operations — not ground-up construction.
Do you work industrial and commercial HVAC?
Yes. Commercial buildings, campuses, and industrial support spaces across Metro Atlanta.