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Building systems are often plagued with inefficient and out-of-date technologies. Many of these systems were installed over time and not fully integrated or optimized with other infrastructure systems. Retro-commissioning is the process of discovering and correcting these types of problems in existing under performing building systems.

Indoor Environmental Services (IES) offers high quality retro-commissioning services which correct the problems of under performing buildings. Productivity, operational efficiency and the health and comfort of your staff, as well as your facility are major business concerns. Our retro-commissioning services offer a holistic approach to facility solutions. We look at your business, facilities and operations in total and in combination with one another to improve your indoor environment, operating efficiency and comfort. Our program also has the potential to optimize energy usage and generate systems cost savings for building owners.

IES is your single-source provider of indoor environmental systems, facility solutions and retro-commissioning services. Our team delivers the most comprehensive:

Retro-Commissioning Services:

  • Retro-Commissioning Plan
  • Systems Investigation
  • Control System Verification
  • Analyze Results
  • Deficiency Report
  • Plan and Specification Review
  • Design
  • Construction
  • Function Performance Testing
  • Troubleshooting
  • Corrective Action Implementation
  • Facility Operator Training
  • Maintenance Programs
  • 24/7 Emergency Service

Facilities likely in need of retro-commissioning include schools, hospitals, health care facilities, office buildings, shopping centers, governmental complexes and manufacturing facilities.

Among the many benefits of Retro-Commissioning for building owners are:

  • Improved Indoor Environment and Comfort
  • Increased Energy Performance for Buildings
  • Increased Occupant Satisfaction and Productivity
  • Improved System Maintenance and Upkeep
  • Improved Documentation, Monitoring and Reporting

Our Retro-Commissioning service is a total facilities approach to building operations. Full integration of your buildings systems saves both time and money while ensuring the highest quality facility operating result possible.

IES – Exceeding Expectations.

Investigation. Discovery. Analysis. Resolution. Results.



Brochure (pdf)
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