HVAC & Mechanical Services

MacLellan Expertise

Industrial and facilities maintenance includes many activities for improving the operational performance of equipment and processes. MacLellan provides mechanical and HVAC maintenance, from equipment inspection and repair to complete preventative maintenance programs.  We are able to quickly respond and mobilize for both emergency and planned events. MacLellan’s goal is to reduce facility operating expenses and minimize equipment downtime while increasing productivity and providing a high quality of service.

Best People, Best Systems, Best Results

MacLellan will customize a planned maintenance program to fit your facility needs.  From routine filter changes to a comprehensive planned maintenance program, our experienced technicians will keep the HVAC and process mechanical equipment of your industrial or commercial property operating at peak efficiency.

General Services

  • Proactive planned maintenance programs
  • Retrofit & upgrade existing systems
  • Emergency response (24 x 7 x 365)
  • Regulatory compliance with service logs, issue response logs and periodic reporting
  • Energy efficiency reviews & analysis
  • Warranty service & repair for most equipment

Mechanical Services

  • Process and comfort solutions
  • Industrial chiller retrofit and service (centrifugal, absorption, screw)
  • Air handling equipment
  • Unit heaters
  • Boilers
  • HVAC controls
  • Heat exchangers
  • Cooling towers
  • Door heaters
  • Rooftop units / split systems
  • Condensers / fluid coolers
  • Digital / pneumatic control systems
  • Variable air volume systems (VAV)
  • Heat pump systems
  • Chilled & hot water systems
  • Electrical panel cooling
  • Industrial exhaust systems
  • Computer room air conditioning units

The MacLellan Approach

Our role is to maintain equipment at an optimal operational level to maximize uptime while enabling increased productivity and reduced mean time between failures. MacLellan is able to effectively manage the preventative maintenance support of critical process and ancillary equipment so you can focus on your core business. Many of our world class customers utilize the principles of lean manufacturing. We understand the principles of lean manufacturing and together with our experience have adopted a manufacturing discipline throughout our organization. This is unique to a service organization and brings you consistent, measurable results. MacLellan tracks key performance indicators in safety, quality, delivery, cost and morale.  We also measure results by trend line analysis and machine uptime, process yields, run rates and energy savings. 

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

HVAC License 87008


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

HVAC License HC1500007

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