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CO₂ refrigeration retrofits and upgrades for Metro Atlanta cold facilities
Low-temp CO₂ / natural-refrigerant retrofits, upgrades, commissioning, and service for cold storage and food manufacturing — not plant chillers or comfort cooling.

CO₂ is a low-temp refrigeration product family — not a chiller plant. Willis Mechanical supports CO₂ / natural-refrigerant systems for Metro Atlanta cold storage and food manufacturing with retrofit, upgrade, commissioning, and service depth from CO₂-capable technicians.
This page is not for plant chillers or comfort cooling. If you need chilled-water plants, process loops, or building comfort cooling, see Chillers. For broader low-temp cold storage and food manufacturing refrigeration, see sibling page Refrigeration.
What CO₂ work covers
- CO₂ (R-744) / natural-refrigerant systems for cold rooms, freezers, and low-temp process spaces
- Retrofits, conversions, and capacity upgrades on CO₂ racks
- Commissioning, start-up, and ongoing service with CO₂-capable technicians
- Diagnostics and emergency response when a CO₂ rack threatens product or production
- Clear separation from HFC-only generic calls and from plant chillers
How we work in occupied cold facilities
- Plan rack and retrofit work around product and inventory uptime
- Phased renovations and special projects in live coolers and freezers wherever the application allows
- One accountable Metro Atlanta team from the service call through commissioning
- Not a drop-ship equipment sale — maintenance and project labor behind the work
Where it applies
- Cold storage and distribution facilities running or evaluating CO₂
- Food manufacturing and beverage plants with low-temp CO₂ systems
- Owner-operated Metro Atlanta sites that need natural-refrigerant depth without juggling vendors
- Facilities leaders treating CO₂ maintenance and retrofits as high-value work, not a commodity PM
Renovations, retrofits & special projects
CO₂ work here is renovations, retrofits, upgrades, and special projects in facilities that already run cold — not ground-up construction. Request Service: call (678) 966-0094, request service, or start a project.
CO₂ refrigeration FAQ
Is CO₂ refrigeration the same as chillers or comfort cooling?
No. This page is natural-refrigerant / low-temp CO₂ for cold storage and food manufacturing. Plant chillers for process or comfort cooling are a different product on Chillers.
Does Willis Mechanical handle CO₂ refrigeration retrofits in Metro Atlanta?
Yes — CO₂-capable technicians for retrofits, upgrades, commissioning, and service, planned around uptime in occupied cold facilities rather than selling equipment alone.
Can a CO₂ retrofit keep cold spaces online?
That is how we scope the work: phased renovations, retrofits, and special projects around live product loads whenever the application allows.
How is this different from general refrigeration?
General Refrigeration covers low-temp cold storage and food manufacturing broadly. This page is the dedicated CO₂ / natural-refrigerant money page for retrofit depth and CO₂-trained service.
