HVAC built for facilities that can't afford to go down
NK Mechanical installs and services commercial and industrial heating and cooling systems up to 130 tons — from precision computer-room cooling to custom proprietary systems engineered for your building.
NK Mechanical is a commercial and industrial HVAC contractor in Nashville, TN, serving facilities across Middle Tennessee for more than 35 years. We handle the systems most contractors won't touch — high-tonnage units, proprietary equipment, and mission-critical cooling where a single hour of downtime carries real cost. One unlimited license, one accountable team, from design through ongoing service.
When the system fails, the costs stack fast
For commercial and industrial operators, HVAC isn't comfort — it's continuity. A failed compressor can mean lost production, spoiled inventory, server-room shutdowns, or a building full of people you have to send home.
Unplanned downtime
Mission-critical systems that stop without warning halt operations and revenue.
The wrong contractor
Most shops aren't licensed or experienced for high-tonnage and proprietary systems.
Surprise invoices
No transparency means you never know if the spend was necessary or fair.
The full commercial & industrial scope
AC & Heating Systems
Installation, repair, and maintenance of systems up to 130 tons — rooftop units, split systems, and large-tonnage equipment.
Computer-Room Cooling
Precision cooling for server rooms and data environments where temperature stability is non-negotiable.
Cooling Towers & Pumps
Service and maintenance of cooling tower systems and the pumps that keep them moving.
Boiler Systems
Commercial and industrial boiler installation, repair, and seasonal maintenance.
Exhaust & Makeup Air
Exhaust and makeup-air systems for kitchens, manufacturing, and high-occupancy spaces.
Pneumatics & DDC Controls
Building automation, direct digital controls, and pneumatic system service.
Commercial Kitchens
Full commercial kitchen HVAC and ventilation installations.
Custom & Proprietary Systems
Consultation and service for proprietary and custom HVAC and refrigeration system designs.
“NK Mechanical continues to be vital to our day-to-day operation of 126 MAPCO locations throughout Tennessee. Whenever I have a mechanical issue, my first call is always to NK.”
FAQ
We service air conditioning and heating systems up to 130 tons — including rooftop units, computer-room precision cooling, makeup air systems, boilers, and cooling towers — across commercial and industrial facilities in Middle Tennessee.
Yes. We specialize in large-scale commercial and industrial HVAC installations — high-tonnage systems, proprietary and custom equipment, and full mechanical builds, engineered and installed by an in-house team.
Yes. Our in-house engineering design-build team can design HVAC and refrigeration systems for any application, large or small, within realistic budgets and schedules.
Absolutely. We adapt to your purchase order, work order, billing, and accounting systems — whatever is most convenient for your operation.
Let's talk about your project
Talk to a team that's handled Middle Tennessee's most demanding commercial mechanical work for 35+ years.