Start-to-finish solutions for all renovation and retrofit projects

As buildings age, it’s important to find a cost-effective way to replace their mechanical systems.  We are skilled at replacing HVAC, electrical, plumbing and various other systems.

We provide our clients with capital budget planning, system analysis, energy-efficient design, expert project management, and even emergency replacements when needed.

We select the best equipment for your requirements, and design our solutions focused on installed and operating costs.  The design is then evaluated to determine the financial impact on your business.

So whether you need to replace a single rooftop unit, a chiller plant, a boiler, plumbing systems or need a total building system upgrade, we have the experience to provide the best solution for you.

Turn-key solutions for existing and occupied buildings

System replacement can be difficult. Our experts in HVAC, electrical, plumbing, building automation, air balance, water treatment, and other systems make it easy on you by providing single point of contact and total responsibility for system replacements and upgrades.

We work closely with you to provide valued engineering solutions for any budget.  Our solutions include system analysis and energy-efficient design/build.

We leverage our logistics, off-site fabrication, detailing, BIM, and our extensive network of partners to ensure project success and to exceed expectations.

Whether you need to replace a 1,200 ton cooling tower on a high-rise rooftop over a weekend, re-engineer your ice storage needs, design/build a 40,000 SF sub-zero freezer, or just keep your office comfortable year-round we have the knowledge and experience to provide the right solution, on time, every time!

Contact us today to see what our HVAC  service can do for your business to ensure its smooth operation for years to come. 

MacLellan HVAC & Mechanical, Inc.


2538 Central Parkway, SW
Decatur, AL 35601
Phone: (256)686-4464
Fax: (256)686-4465


5314 W. 79th Street
Indianapolis, IN 46268
Phone: (317)876-0985
Fax: (317)876-2024

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