Tech Mechanical is Now CoolSys
The best commercial HVAC & refrigeration contractor servicing the greater Detroit area. We handle everything from installation and repair to maintenance, upgrades and recycling.
Expanding Tech Mechanical’s Legacy with CoolSys
Several years ago, CoolSys acquired Tech Mechanical, a recognized industry leader that has served the Southeast Michigan area since 1983.
We are pleased to announce the full integration of Tech Mechanical into the CoolSys brand, which boasts over 25 years of industry leadership across the nation. Operating as a single, unified organization, the rebranded CoolSys team in your region will deliver enhanced capabilities, expanded resources, and unmatched expertise. Customers can expect an even broader range of services, including seamless installation, comprehensive maintenance and environmentally conscious equipment removal.
Today, we stand as Southeast Michigan’s premier HVAC company, employing some of the industry’s most skilled service and installation technicians.
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With Tech Mechanical now operating as CoolSys, our unwavering commitment to outstanding service is further empowered by the leadership, resources and extensive experience of CoolSys. United under one name, we continue to deliver best-in-class solutions meticulously tailored to the unique needs of our valued customers.
Our Customers






Tech Mechanical, Now CoolSys, Geographic Coverage
We continue to support Tech Mechanical’s customers, as well as commercial and industrial businesses in:
More Resources, Same Trusted Commercial & Industrial HVAC Refrigeration Service
For over five years, Tech Mechanical has been a proud part of the CoolSys family, contributing to a larger mission. As a trusted organization, we remain dedicated to innovation, excellence and delivering top-quality customer care.
As part of CoolSys, we’ve gained access to:
State-of-the-art HVAC-R diagnostic and repair equipment to identify and fix issues faster
Comprehensive capabilities in MEPR/FP engineering, energy optimization and facilities and equipment management to better serve your needs
A brand-new fleet of service vehicles to equip our technicians with new safety features and enhanced gas mileage
Industry-leading training and benefits for our technicians to help secure, retain and grow talent
Modernized IT systems and streamlined parts management to secure equipment faster
Efficient service processes for quicker turnaround times and minimized downtime
Tech Mechanical HVAC - CoolSys : Stronger Together
Tech Mechanical has fully transitioned to the CoolSys brand. While our name and logo have changed, our unwavering commitment to excellent customer service and highly trained, dedicated technicians remains.
Reliable Commercial and Industrial HVAC and Refrigeration Services
We provide installation, design, maintenance and repair services, including 24/7/365 emergency support for all commercial and industrial HVAC and refrigeration systems.
We repair, maintain and install refrigeration equipment for all businesses, including convenience stores, grocery stores, hotels and more.
HVAC Design/Build
Our technicians specialize in engineering, designing and installing commercial HVAC-R systems to ensure optimal performance and efficiency throughout your equipment’s lifespan. From concept to completion, we deliver energy- and cost-efficient systems that provide lasting value.
Whether updating an existing system or creating a new one, we design reliable solutions tailored to your building’s needs and budget. With experience servicing all major brands, we know what works best for you.
Let us manage your project—from MEPR design to installation and commissioning—so you can focus on running your business.
HVAC and Refrigeration Equipment Preventive Maintenance
Preventive maintenance is a valuable investment that ensures your HVAC and refrigeration systems perform efficiently throughout their expected lifespan.
Our customized preventive maintenance programs offer customers significant benefits, including:
- Six times less likely to experience compressor failure
- 50% reduction in emergency service calls
- Priority service
- Increased equipment performance
- Reduced energy consumption
- Preferred rates on repair work
- Extended equipment life cycle
- Fewer service calls
- Less operational downtime
- Maximized capital spending
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For a single annual fee, we will manage your entire HVAC system, including regular maintenance inspections, necessary repairs, labor and materials. This provides predictable yearly costs and guaranteed peace of mind.
Automated Building Control Systems
Our certified control specialists have extensive field experience designing, installing and servicing a wide range of HVAC automation control systems. We begin with a comprehensive survey of your facility to design a customized system tailored to your building’s precise specifications. Our team understands the optimal operational sequences to protect your equipment and ensure it performs as expected.
As a Honeywell Automation and Controls Specialist, we hold premier industry credentials. We are also certified with leading manufacturers, including Tridium (R2 and AX), Carrier, Trane and Johnson Controls.
Paint Booth & Finishing Systems
We design, install, furnish and service paint spray booths and finishing systems, specializing in custom solutions for automotive body shops and large machinery.
Our services include:
- Airflow measurement and balancing
- Booth testing and evaluation
- Finishing system troubleshooting
- OSHA-certified breathable air system installation and testing
- Make-up air system installation
Annual CSD-1 Testing
Annual CSD-1 testing is required for all commercial boiler applications in Michigan.
The service includes inspecting the controls and safety devices used on commercial boiler systems, as required by the American Sociaety og Mechanical Engineers (ASME) CSD-1 Code.Â
As a CoolSys company, Tech Mechanical offers comprehensive boiler testing and repair services to ensure your equipment passes this mandatory state inspection.
Energy Management
We help businesses save on their energy bills through practical and innovative energy-saving solutions, like state-of-the-art controls and efficiency upgrades. In addition, our maintenance service plans also ensure equipment runs seamlessly and proactively identify potential inefficiencies.
Full MEPR/FP Engineering
We provide integrated MEPR/FP and design-build engineering solutions, as well as energy and emissions modeling and feasibility studies for renewable energy systems. From data centers, healthcare and institutional industries to industrial and commercial facilities, we help customers reduce energy use and costs through tailored engineering solutions. Focused on sustainability and decarbonization, we provide innovative, effective services not only throughout the Northeast but across the entire U.S.
What Makes Tech Mechanical, Now CoolSys, Different?
The integration of Tech Mechanical into CoolSys unites the extensive expertise and resources of two industry leaders. This powerful synergy significantly expands our large-scale capabilities, while also enhancing local responsiveness. Backed by a large, experienced technician base, we’re ready to deliver fast, reliable services with minimal downtime.
Some of the industries CoolSys serves include:
From design and installation to preventive maintenance, we manage every stage of your project with complete accountability. And with local support on hand, you’ll always have someone ready to help.
CoolSys, By the Numbers
Work orders per year
Average customer satisfaction score
Highly trained technicians
What Our Customers Say
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Join the Best Commercial HVAC and Refrigeration Team in the Business
Explore exceptional career opportunities at CoolSys. Our technicians benefit from dynamic career paths in commercial, industrial and construction HVAC-R.
Learn about our industry-leading training, competitive compensation, comprehensive benefits and other advantages.
Contact Us for Expert HVAC and Refrigeration Solutions
We remain committed to delivering the prompt and reliable service that Tech Mechanical customers have come to trust. Contact CoolSys for expert solutions in commercial HVAC, refrigeration, custom ductwork fabrication, equipment and engineering.
CoolSys Southeast Michigan Branch
C&I Pontiac
1490 East Highwood
Pontiac, MI 48340
Branches are open Monday to Friday, 7 A.M. to 7 P.M. Emergency HVAC and refrigeration service available 24/7/365.
Call 866-417-6586.