HVAC System Regulations: HVAC Logbook / BACS Decree
Introduction – HVAC System Regulations 2025
The year 2025 marks a decisive turning point for the regulation of Heating, Ventilation, and Air Conditioning (HVAC) systems in France. The new standards aim to:
- Strengthen the energy efficiency of buildings
- Reduce their carbon footprint
- Optimize periodic controls of installations
These developments particularly concern buildings equipped with HVAC systems with a power rating exceeding 70 kW and 290 kW.
This article provides an in-depth analysis of legal requirements, key deadlines, and practical implications for ensuring the compliance of installations.
1. HVAC Logbook and Inspection of Thermodynamic Systems
1.1. Context and objectives
The regulation on HVAC systems is part of a global framework aimed at:
Strengthening the energy performance of tertiary buildings
- By focusing on long-term energy savings
Optimizing the monitoring of thermodynamic systems
- Through regular inspections
- Ensuring their proper functioning
Reducing energy consumption
- Limiting CO₂ emissions
- Contributing to the achievement of France’s climate objectives
Ensuring the compliance of installations
- By following European and international energy efficiency standards
Owners and managers must ensure they comply with these new requirements to guarantee the sustainability of their installations and benefit from the advantages of a more energy-efficient building.
1.2. Deadlines and obligations
As of January 1, 2025, only entities accredited ISO/IEC 17020 type A will be able to perform inspections of HVAC systems.
This means that companies in charge of maintenance must comply with specific accreditation criteria in order to be authorized to carry out the necessary controls.
Key dates to remember
- July 1, 2025: Mandatory inspection for all systems installed before July 1, 2020
- Every 5 years: Maximum frequency imposed for inspections, unless specific provisions apply
It is essential to prepare for these inspections in advance to avoid potential fines or costly compliance measures. Controls will focus on energy performance and compliance with current standards.
Legal reference: Article R. 224-42 of the Environment Code – Legifrance
2. BACS Decree: Mandatory Automation and Control of Buildings
2.1. Issues of the BACS Regulation
Building Automation & Control Systems (BACS) play a key role in the management of modern buildings. It allows intelligent regulation of all energy systems, which is crucial for achieving the objectives of:
- Reduction of energy footprint
- Optimization of equipment efficiency
The main challenges
Optimization of energy consumption Thanks to intelligent regulation, BACS allows adjusting energy needs based on actual operating conditions of the building:
- Outdoor temperature
- Occupancy of premises
- Weather conditions
Reduction of maintenance costs Increased supervision allows detecting anomalies before they become major problems, which reduces costs associated with unplanned interventions.
Improvement of occupant comfort By adjusting HVAC systems in real time, a BACS ensures:
- Optimal temperature
- Constant indoor air quality
- Thus contributing to the well-being of people
Reduction of environmental footprint By optimizing energy management, BACS contributes to the reduction of CO₂ emissions, allowing buildings to meet the criteria of environmental standards.
BACS therefore goes far beyond simple energy management: it transforms the way buildings are controlled, integrating intelligent solutions for sustainable resource management.
2.2. Implementation deadlines
Buildings with more than 290 kW will be subject to BACS regulations as of January 1, 2025.
This decree imposes the installation of an automatic management system for HVAC installations in these buildings to ensure optimal management of energy consumption.
Owners must ensure that their installations comply with this requirement within the allotted time. In case of non-compliance, financial sanctions may be applied.
Key dates
- January 1, 2025: Compliance obligation for buildings whose power exceeds 290 kW
- January 1, 2025: Mandatory inspection for installations put in place before April 8, 2023
Legal references:
3. Impact on Building Management System (BMS/BAS)
3.1. Benefits of BMS/BAS
The integration of an advanced Building Management System (BMS) or Building Automation System (BAS) plays a crucial role in the management of HVAC installations and compliance with the requirements of the HVAC 2025 regulation.
These systems not only allow better management of energy consumption, but also optimize the overall performance of buildings while ensuring the comfort of occupants.
1. Optimization of energy consumption
One of the main advantages of BMS/BAS lies in its ability to monitor and control energy consumption in real time.
By collecting detailed data on the use of HVAC equipment (heating, ventilation, air conditioning), these systems provide an overview of the building’s energy efficiency.
This allows managers to:
- Make informed decisions to optimize energy management
- Adjust equipment regulation based on actual needs
- Heating based on occupancy
- Temperature adjustment according to schedules
Such management allows substantial savings by reducing energy waste.
BMS/BAS systems also allow the application of preventive maintenance strategies by identifying equipment that consumes more than expected or is at risk of breaking down. By anticipating these failures, unplanned repair costs are reduced.
2. Detection and correction of anomalies
Another major advantage of BMS/BAS systems is their ability to quickly detect anomalies in equipment or management processes.
Whether it is:
- A loss of performance of an air conditioner
- An abnormal variation in temperature
- An air leak in the ventilation system
These platforms can immediately signal a malfunction via alerts. This early detection allows managers to react quickly and avoid costly breakdowns.
Real-time monitoring capability also allows maintaining an optimal level of performance by instantly adjusting system parameters based on changing needs.
3. Improvement of occupant comfort
The management of the indoor environment is at the heart of BMS/BAS. Thanks to intelligent regulation systems, these platforms allow:
- Maintaining optimal thermal comfort for occupants
- Controlling operating costs
For example, a constant and comfortable temperature can be maintained throughout the day based on the needs of each area of the building:
- Offices
- Meeting rooms
- Common areas
While avoiding energy waste.
Automated ventilation systems can also guarantee optimal indoor air quality by adjusting air flow rates based on:
- Humidity
- CO₂ concentration
- Temperature
To ensure that air is properly renewed without consuming energy unnecessarily.
4. Reduction of environmental footprint
The HVAC 2025 regulation aims to reduce the carbon footprint of buildings, and BMS/BAS plays a central role in this reduction.
By optimizing energy management, these systems help reduce CO₂ emissions associated with building activities. Better control of energy consumption and equipment leads to a decrease in energy demand.
Furthermore, some BMS/BAS systems can be integrated with renewable energy sources:
- Solar panels
- Geothermal systems
To maximize the use of clean energy. This not only reduces the carbon footprint but also meets increasingly strict climate objectives in the real estate sector.
5. Compliance with regulatory requirements
Building owners and managers must ensure that their HVAC installations comply with current regulations, particularly those of the HVAC system 2025 regulation.
The implementation of a BMS/BAS system allows:
- Guaranteeing the traceability of energy performance
- Facilitating energy inspections and audits
By having accurate and up-to-date data on the building’s energy efficiency, it becomes easier to prove compliance to authorities and demonstrate the efforts made to meet European standards.
Conclusion
The integration of an advanced BMS/BAS in building management thus allows maximizing energy efficiency while improving occupant comfort and reducing the ecological footprint. Furthermore, these systems facilitate compliance with HVAC regulations.
3.2. Regulatory compliance and implementation
Building Management System (BMS) and Building Automation System (BAS) are essential tools for meeting the requirements of the HVAC 2025 regulation.
The implementation of these technologies not only allows real-time monitoring of HVAC installation performance but also ensures compliance with current standards.
Measures to comply with regulatory requirements
Verification of compatibility of existing installations First and foremost, it is imperative to ensure that current systems are compatible with the new regulation:
- Verification of installed HVAC equipment
- Energy management tools
- Efficiency controls
If installations are obsolete, an update or replacement plan must be planned.
Planning of mandatory periodic inspections Inspections must be scheduled every five years, except in case of:
- Major technical modifications
- Specific exceptions
This not only guarantees regulatory compliance but also the durability of equipment.
Digitized performance monitoring The implementation of intelligent BMS/BAS platforms allows continuous monitoring of the evolution of HVAC system performance. These tools allow:
- Better management of energy consumption
- Preventive maintenance
- Complete traceability of performance for compliance audits
BMS/BAS solutions also allow fine analysis of energy data, which helps detect anomalies before they become major problems, thus optimizing operational costs.
Additional references:
4. The HVAC Logbook: An Indispensable Tool
4.1. Definition and content of the HVAC Logbook
The HVAC Logbook is a regulatory document detailing all elements necessary for the monitoring and maintenance of HVAC installations. It is an essential tool to guarantee compliance with the HVAC system 2025 regulation.
Information contained in the logbook
Technical characteristics of HVAC equipment
- Description of installed equipment (types of heating, ventilation, air conditioning)
- Technical specifications
History of installation, maintenance, and inspection
- Installation dates of systems
- Maintenance intervention dates
- Mandatory inspection dates
Energy performance diagnostics
- Results of energy audits performed on HVAC equipment
- Recommended upgrade actions
Recommendations for system optimization
- Advice on optimizing energy consumption
- Indoor air quality management
- Continuous improvement of installations
4.2. Utility and benefits
The HVAC Logbook presents several advantages for building managers:
Continuous compliance Thanks to this document, it is easier to follow legal obligations and ensure regular updating of equipment in accordance with regulations.
Simplified management The logbook centralizes all information related to HVAC equipment, thus facilitating their management and maintenance.
Cost optimization Regular and well-documented monitoring allows:
- Reducing unplanned maintenance costs
- Optimizing energy consumption
Preparation for audits The logbook facilitates preparation for regulatory inspections by ensuring that all information is up to date and accessible to auditors.
Legal reference: Decree relating to the maintenance of HVAC equipment – Legifrance
5. Strategies to Comply with 2025 Requirements
5.1. Energy audit and action plan
The energy audit is a key step in the process of compliance with HVAC regulations. A precise energy diagnosis allows determining the actions necessary to improve the energy efficiency of HVAC installations.
Audit process
Initial energy diagnosis Before taking any measures, it is essential to perform a detailed diagnosis of:
- HVAC systems in place
- Energy consumption
This will allow defining weak points and establishing a clear roadmap for improvements.
Development of a compliance plan Based on the audit results, it is important to design an action plan to meet regulation requirements:
- Upgrading existing equipment
- Installation of new control systems
- Optimization of maintenance processes
Identification of priority actions Some actions may be more urgent than others based on:
- Their impact on energy consumption
- The non-compliance of certain equipment
It is crucial to establish an intervention schedule and prioritize actions to be taken.
5.2. Tools and technological solutions
Digital tools play an increasingly important role in building management and regulatory compliance.
Available solutions
Intelligent BMS platforms These platforms allow:
- Collecting, analyzing, and managing performance data of HVAC installations
- Offering real-time optimization tools to reduce energy consumption
Energy monitoring software Tools specialized in monitoring energy consumption can:
- Generate automatic reports
- Facilitate monitoring of regulatory requirements
- Simplify preparation for inspections
Automation of reports and regulatory alerts The use of software solutions allowing automation of:
- Report generation
- Regulatory alerts
This simplifies the compliance process.
6. Conclusion
The regulation of HVAC systems constitutes an important but necessary challenge to improve the energy performance of tertiary buildings.
Between the inspection of thermodynamic systems, the integration of BACS systems, and the use of the HVAC Logbook, it is essential to take measures now to guarantee compliance.
Building owners must adopt proactive strategies to adapt to new requirements:
- Energy audits
- Implementation of advanced management tools like BMS/BAS
- Optimization of equipment
Compliance with these regulations will not only allow meeting legal requirements but also realizing substantial savings in terms of energy consumption and maintenance.
Source: The DCRR team