BMS Audit

What is a BMS Audit

A modern commercial building has a management system that controls ventilation, heating, cooling, and lighting. This system was configured once — when the facility was handed over. Since then, tenants have changed, working hours have changed, part of the space has been refurbished, and equipment has been replaced. The settings usually stayed the same.

A BMS audit checks whether the control layer still matches how the building is actually used. We look for discrepancies between the configuration and reality: operating schedules for air handling units set for occupancy levels from years ago, points left in manual mode after the last fault, sensors providing readings no one believes, zones being heated and cooled at the same time.

This is what distinguishes a BMS audit from an energy audit. An energy audit covers the whole facility and asks where you are losing energy. A BMS audit goes one level deeper and asks whether the system you already have and have already paid for is doing what it was bought to do. The conclusions are usually different: not “invest in new equipment,” but “you already have the equipment; it is operating in the wrong mode.”

There is also a second layer. A properly configured BMS is a source of measurement data about the building. Without reliable trends, there is no sound CRREM assessment, no meaningful reporting, and no evidence for the financing institution.

Scope includes:

1. inventory of the system architecture and point list
2. verification of settings, schedules, and zoning
3. checks of sensors and signal quality
4. analysis of trends and data archiving methods
5. review of alarms and operator response procedures
6. assessment of subsystem integration and metering
7. recommendations divided into correction, add-ons, and replacement
8. assessment of compliance with EPBD and the Taxonomy

Expert Opinion

“In most buildings, the BMS works exactly as it was set up on the day of handover. The problem is that the building has changed since then.”

Dominika Bryła

Head of ESG, Technical & Certification Consultancy

Check the current rating of your building

Benefits

Savings without capital expenditure

Most audit findings can be resolved through reconfiguration. The effect shows up in the bills without an item in the investment budget.

Using an asset you have already paid for

The system cost money at construction and costs money to maintain. The audit checks how much of that investment is actually working.

Fewer comfort complaints

Temperature complaints usually do not result from insufficient capacity, but from zones, settings, and sensors. That can be resolved using data.

Data you can trust

Verified measurements are a prerequisite for a reliable CRREM assessment, reporting, and discussions with the lender.

Alarms that mean something

Organizing thresholds and procedures turns alert noise into an early warning tool.

Preparation for next steps

A well-organized system is a prerequisite for sensible automation, predictive optimization, and meeting the growing requirements for building automation.

Project implementation from A to Z

Customization of solutions

Constant support and advice

CRREM

We will guide you through the entire project process

System inventory – We reconstruct the architecture, points, and control scope, even with incomplete documentation. Result: we know what the system actually controls.
Usage profile – We compare schedules, temperatures, and zones with actual use. Result: we identify discrepancies.
Trend and setpoint analysis – We look for opposing operation, oversizing, and manual mode. Result: we point out documented losses.
Sensor verification – We check whether the system readings match actual conditions. Result: we eliminate incorrect measurements.
Alarms and operations – We verify thresholds, priorities, and the technical team's response. Result: we adapt procedures to real needs.
Adjustments and result verification – We implement changes and check their impact on trends. Result: we confirm a real change in consumption.