Pheasants International provides retro-commissioning services in Pakistan for existing commercial buildings, hospitals, industrial plants and pharmaceutical facilities.
Retro-commissioning is a systematic process for evaluating and optimizing the performance of an existing building’s systems, identifying where operation has drifted from design intent and correcting it. The four stages are planning, investigation, implementation and ongoing commissioning.
Most existing buildings run well above the energy they need, and the reasons are rarely exotic. Schedules overridden years ago and never restored. Valves passing. Sensors reading several degrees off. Chillers staging against each other. None of it needs new equipment. It needs someone to find it.
Objectives, documentation review, utility bill analysis, facility team interviews
Site assessment, functional testing, trend logging, short-term metering
Deficiencies identified and ranked by cost against benefit
Control re-programming, setpoint and schedule correction, rebalancing
Post-correction measurement confirming the saving was achieved
Updated sequences, O&M documentation and a persistence plan
Planning
Objectives and scope definition
Documentation and drawing review
Utility bill analysis and baseline establishment
Facility team interviews
Investigation
Site assessment and equipment survey
Functional testing of systems and sequences
Trend logging and short-term metering
Sensor calibration verification
Deficiency identification and prioritization
Implementation
Control re-programming and sequence correction
Setpoint and schedule optimization
Air and water rebalancing where required
Valve, damper and actuator correction
Verification and hand-off
Post-correction measurement and savings verification
Updated sequences of operation
O&M documentation update
Persistence plan
Existing commercial towers and offices
Hospitals
Hotels
Shopping malls
Pharmaceutical plants
Textile and manufacturing facilities
Data centers
Universities and educational campuses
Government buildings
Pheasants International provides retro-commissioning services across Pakistan for existing commercial, healthcare, industrial and pharmaceutical buildings, following ASHRAE Guideline 0.2 with savings verified to IPMVP.
Four stages: planning, investigation, implementation and ongoing commissioning. Planning sets objectives and baseline, investigation finds the deficiencies, implementation corrects them, and ongoing commissioning keeps performance from drifting back
Commissioning is performed on a new building during construction to verify systems are installed and operating as designed. Retro-commissioning applies the same process to an existing building that was never commissioned or has drifted from its original performance.
No. Most investigation and correction work is done during normal operation, with some functional testing scheduled outside occupied hours.
Often yes. Buildings drift within their first years as schedules are overridden, setpoints adjusted and sensors fall out of calibration. A young building can still run well above its design energy use.
