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50+ Years
experience
Emergency
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Expert HVAC & Mechanical Services in Atlanta & Charlotte
Since 1948, we have been locally owned and operated, shaping skylines and delivering high-quality, energy-efficient mechanical solutions. Our self-performance of all trades and in-house fabrication capabilities, combined with over seven decades of experience, position us as a leading mechanical contractor. We specialize in HVAC systems, plumbing, construction, commissioning, and building automation, serving commercial buildings throughout their lifecyclefrom design and construction to ongoing maintenance. Our team of skilled professionals is committed to safety, integrity, and collaboration, ensuring client satisfaction through proactive service and innovative problem-solving.

With campuses in Atlanta and Charlotte, we serve diverse markets including healthcare, education, government, and industrial facilities. Our dedication to continuous improvement and sustainable practices has earned us recognition as one of the region's best places to work. We prioritize building relationships founded on trust, delivering tailored solutions that meet each client's unique needs while maintaining the highest standards of quality and reliability.
Services
HVAC Systems Plumbing Services Building Automation Energy Analysis Commissioning Retrocommissioning Preconstruction Preventative Maintenance LEED Certification Retrofit Solutions
Details
  • Year established: 1948
Highlights and features
  • We offer 75+ years of mechanical contracting experience with in-house engineering resources
  • Our team provides 24/7 emergency service in Atlanta and Charlotte metropolitan areas
  • We implement patented building automation systems for energy efficiency optimization
  • Our LEED-certified professionals deliver sustainable solutions for commercial facilities
  • We guarantee proactive maintenance programs with 96% issue resolution within 24 hours
What people say
Exceptional expertise Reliable service Energy savings achieved Professional team Timely execution
Services
HVAC Systems
We design, install, and maintain commercial HVAC systems that optimize energy efficiency while ensuring occupant comfort. Our solutions include chiller systems, air handling units, and rooftop units with smart controls integration. With 75 years of experience, we deliver systems that reduce operating costs by up to 30% through advanced automation and precision engineering.
Building Automation
Our automation solutions integrate HVAC, lighting, and security systems through open-protocol platforms. We implement DDC controls and cloud-based monitoring that enable real-time energy management. These systems reduce maintenance costs by 25% while improving system responsiveness through predictive analytics and remote diagnostics capabilities.
Energy Analysis
We conduct comprehensive energy assessments identifying conservation measures that reduce utility costs. Our engineers use hourly simulation models to pinpoint system deficiencies and develop capital plans with guaranteed savings. Clients achieve average energy reductions of 22% through our data-driven optimization strategies and implementation support.
Commissioning
Our commissioning process ensures optimal performance of new and existing building systems. We perform functional testing, DDC point-to-point verification, and ongoing monitoring that extends equipment lifespan. This service reduces energy waste by 18% while maintaining ASHRAE-standard compliance across all mechanical systems.
Preventative Maintenance
We offer customized maintenance plans that prevent system failures through regular inspections and component testing. Our Service Shield program extends equipment life by 30% while reducing emergency repairs by 40%. Clients receive priority 24/7 support and detailed performance reporting for continuous operational improvement.
Questions
What types of HVAC systems do you specialize in?
We specialize in commercial HVAC systems including chillers, air handling units, VAV systems, and rooftop units for both new construction and retrofit projects.
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency service in Atlanta and Charlotte with rapid response teams available for critical system failures.
Can you help with LEED certification projects?
Yes, our LEED-accredited professionals have completed over $180M in energy conservation measures and support projects from Certified to Platinum levels.
What building automation platforms do you support?
We work with major platforms including Tridium, Distech, and Siemens, implementing open-protocol systems that integrate with existing infrastructure.
How do you handle preventative maintenance?
Our Service Shield™ program includes quarterly inspections, system testing, and performance reporting to maintain optimal operation and extend equipment lifespan.
What markets do you serve?
We serve healthcare, education, government, industrial, technology, and commercial office markets across the Southeastern United States.
Reviews (6)
Terry Jackson
Oct 03, 2023 Report
Ive been working here going on 8yrs in the field and I must say Ive never worked for a company thats hands on and takes care of you like this one!!! They really care!!!!! Love it here!!!!
Sean Raatz
Jun 11, 2023 Report
Came here for orientation and to join the McKenney's Inc team. They have a state of the art facility and are the most safety conscious company ai have ever had the pleasure to work for.
Stephen Smith
Feb 07, 2022 Report
Critical: Professionalism, Punctuality, Quality, Responsiveness, Value No detail description on their proposals, hit me up with a bunch of change orders after I signed off for them to do original job. Poor customer service skills, asked for explanations on different projects and invoices and never heard back. Service: Outdoor plumbing system repair
Brian Chapman
Jan 04, 2019 Report
Maybe you should drug test Matthew Johnson, he has bought Methamphetamines from someone I kn know and smoked them on a regular basis. You all need to seriously drug test your employees, that's what you advertise, right? So do it. He was so high it was insane. He made me fear for my life. I will never forget that experience. It was demonic. Seriously.
ATyana
May 26, 2018 Report
One of their drivers almost ran me off the road and then shrugged like he didn't care. Do better. Not only was I driving the speed limit he had a lane he was in. I guarantee if my skin was lighter it wouldn't have happened. I'm disgusted
Samuel Parris
Mar 30, 2017 Report
McKenney's is a great company with many highly skilled technicians that specialize in different building system components. They are continuing to raise the standard for customer service, and the quality of the work they do is outstanding. I highly recommend them.