For large facilities

Most people understand the importance of having regular tune-ups for their cars, yet most buildings are seldom checked to ensure smooth and efficient operation. This can lead to uncomfortable occupants, as well as higher energy bills and maintenance costs.

The Retrocommissioning program provides funding for a qualified service provider to perform a retrocommissioning study of your building. This study will provide recommendations for low and no-cost improvements to be made to your building’s energy systems; usually with a simple payback of under 2 years. We pay for 100% of the cost of the study; you commit to spending $0.05 per square foot of building area (or $12,000, whichever is less) to implement some of the recommended improvements.

Retrocommissioning is a great option for larger facilities and typically consists of four project phases: application, planning, implementation and verification. To participate in the Retrocommissioning program the facility must use more than 1,500,000 kWh/yr.

To learn if your building is a good candidate for the Retrocommissioning program, apply for a FREE facility assessment. Efficiency Works has listed qualified service providers that provide retrocommissioning services. For more details, view the Efficiency Works Business Program Guide.

Building Tune-Up

Retrocommissioning is the term for applying the commissioning process to a building that has been commissioned previously (either during construction or as an existing building).

For small and medium facilities

In 2020 Efficiency Works is partnering with HVAC service providers who perform routine maintenance on small and medium commercial properties through a pilot initiative called Performance Plus. The pilot efforts are intended to find energy-saving opportunities for less complex HVAC systems through existing maintenance enhancement opportunities.

If you are an HVAC service provider with existing routine maintenance contracts for small and medium sized businesses and would like to learn more about the 2020 Performance Plus pilot efforts, please e-mail


Due to the COVID-19 pandemic and stay at home orders issued by the state of Colorado, Boulder and Larimer counties, we have suspended on-site visits until further notice. We expect that service providers will comply the stay at home orders. Efficiency Works is continuing to process retrocommissioning rebate applications as they come through our system. We will update this page frequently as the situation continues to evolve.