We offer recommissioning and retro-commissioning consulting

Over time, buildings develop various control problems and maintenance issues. After a new building was commissioned and has been operating for several years, it should be commissioned again – recommissioned. If an existing building has never been commissioned, it should be commissioned for the first time – retro-commissioned. Recommissioning HVAC systems can solve multiple building and air quality problems.

  • Verification of indoor air quality conditions for spaces and occupants
  • Building automation control and setpoint problems
  • Issues resulting in reduced energy efficiency
  • Temperature/comfort control


Your reliable and thorough recommissioning provider

Building recommissioning is an excellent way to eliminate problems that lead to occupant complaints while also improving energy efficiency. As building recommissioning has grown in popularity, there is little consistency between recommissioning consultants. To ensure building owners are receiving value from their providers, there are important items to consider before starting your HVAC recommissioning project.

  • Is the provider certified and experienced with recommissioning?
  • Is the provider experienced at analyzing the building’s automation system and reviewing the controls contractor’s work to identify control problems?
  • Has the recommissioning contractor provided a detailed proposal that includes a detailed scope of services?

Recommissioning Ventilation Services Improve Indoor Air Quality and Reduce Energy Costs

Excellent indoor air quality conditions in a building can improve business productivity in commercial/general industry spaces, testing scores in education settings, and prevent facility maintenance challenges. Recommissioning your facility can identify ventilation operations that are directly impacting the indoor air quality.

Another important benefit of recommissioning is energy savings. Building owners and operators are becoming increasingly in need of a method to improve building performance without compromising the air quality in the facility. Recommissioning is a systematic method of analyzing the building’s mechanical systems and controls in order to resolve ongoing problems, improve energy efficiency, and confirm a focus on indoor air quality.

A study by Lawrence Berkeley National Laboratory involving 332 recommissioning projects found that the median whole-building energy savings was 16% and the average payback was 1.1 years.  A majority of the energy savings are a result of resolving issues with the controls setup/installation, controls programming, or controls hardware.

IEA integrates utility rebate programs into the recommissioning process when available.