Retrocommissioning (RCx):
The process of systematic investigation to identify improvements in existing building, and offer low cost solutions in a effort to increase building performance.  Many of it's activities are similar to Cx, but it occurs after construction is complete. 

Retrocommissioning Goals:
• Reduce Energy Cost 
• Optimize Building Performance
• Enhance O&M Documentation
• Improve Facility O&M procedures.

Capabilities
• Energy Building energy simulation using DOE Energy Plus 1.2.2.
• Audit & optimize existing building control & energy management systems.
• Mechanical equipment functional testing.
• Fire, Life Safety & Leak Detection functional testing.
• IP & Network infrastructure audit.Please review our

Retrocommissioning Activities Check List below.

Understand Owner's Objectives. 
Understand the owner's "Needs & Wants" & Goal.

Retrocommissioning Plan. 
Generate a Retrocommissioning plan.  The plan will outline detailed activity list, geared towards meeting owner's objective as defined. Ideally the Retrocommissioning plan will include the following tasks:

1. Define Owner's Requirements. 
Define the requirements by system; based on the established objectives.

2. Survey site, understand existing systems, and establish a base line.

3. Energy Simulation. 
Using simulation software, DOE EnergyPlus V1.2.2, to generate a building energy model.

4. Functional Performance Test Procedures and Checklists. 
Develop functional performance test procedures and verification check lists.   

5. Supervise Functional Tests & Analyze Results. 
Analyze & understand test results.  Verify that the system operates per the criteria designed for. 

6. Compiling, Recommendations & Reporting. 
Generate a report identifying the systems recommissioned, energy simulation results, functional test results & improvement recommendations based on our investigative results.

7. Training. 
Identify training criteria, and organize training for the appropriate personnel.

8. Documentation Manuals. 
Gather & organize all documentation of existing systems, including: operation & maintenance manuals for systems involved, 'as-built' drawings.

9. Recommissioning Management Manual. 
Develop a recommissioning manual to include: recommended recalibration frequency of sensors & equipments, guidelines for establishing and tracking benchmarks for systems performance.