On time.
Every time.
Commercial & industrial HVAC, refrigeration, and design-build — engineered, installed, and delivered for the large-scale projects that can't afford to go down.
Request a quote
Tell us about your project — we respond within one business day.
The commercial & industrial contractor for projects that can't fail
NK Mechanical is a commercial and industrial mechanical contractor in Middle Tennessee — with an unlimited license, the bonding capacity for work of any scale, and an in-house engineering design-build team. We take on the large, complex projects most contractors can't: high-tonnage systems, custom and proprietary equipment, and mission-critical installations where downtime isn't an option.
One license. One team. One point of accountability.
Commercial & Industrial HVAC
Heating and cooling up to 130 tons, computer-room cooling, makeup air, boilers, cooling towers, and custom proprietary systems.
Explore HVACCommercial Refrigeration
Walk-in coolers and freezers, ice machines, refrigeration systems, and coolers — kept at temp, because lost product is lost revenue.
Explore RefrigerationDesign-Build & Engineering
In-house engineering that designs and builds mechanical systems for any application — large, complex, and on schedule.
Explore Design-BuildBuilt at commercial scale
From crane-set rooftop units to full mechanical builds on Nashville's largest commercial properties.
Rooftop Unit Installation
Downtown Mechanical Build
Full Mechanical Scope
35 years of getting it right the first time
Our commercial customers can't afford to be down for a moment without substantial cost. That's why owners of proprietary and custom systems — from MAPCO's 126 locations to Gibson Guitar — trust their critical equipment to our technicians.
- In-house engineering design-build team for any application
- We work within your PO, work-order, and billing systems
- You'll always understand what you're paying for and why
The names that can't afford downtime call NK
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 — without hesitation — is always to NK Mechanical. No matter the day or the time, they've always been there for me.
The company provides quality workmanship at a reasonable and competitive price. The employees are knowledgeable and very customer oriented. I'd use NK Mechanical on any projects we have.
We value your knowledge, your fair prices, and your consistently prompt and thorough responses to our service calls. NK Mechanical's quality work and attentiveness to our buildings' needs is greatly appreciated.
NK has been a part of my design-build team for many years. We've had tremendous success together. They do a superb job for us.
Serving commercial & industrial clients across Middle Tennessee
From our Nashville base, we deliver large-scale mechanical work throughout the region.
Outside this list? Reach out — we travel for the right projects.
Frequently asked questions
We focus on commercial and industrial mechanical work — large-scale HVAC, refrigeration, and full design-build projects. We handle high-tonnage systems, proprietary and custom equipment, and complex installations for facilities that can't afford downtime.
We install and service systems up to 130 tons, including rooftop units, computer-room precision cooling, boilers, cooling towers, and makeup air systems.
Yes. Our in-house engineering team designs and builds mechanical systems for any application, giving you a single point of accountability from concept through commissioning — no gap between the engineer and the contractor.
Yes. We hold an unlimited mechanical license and carry the bonding capacity for commercial and industrial work of any scale.
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
A new build that needs designing or a large mechanical scope — tell us about your project and we'll respond within one business day.