Everything you need to know about energy audits for air conditioning systems
An energy audit for air conditioning systems is an important tool for evaluating the energy efficiency and performance of air conditioning units. In the Flemish Region, these audits are mandatory for larger systems and are strictly regulated under VLAREM II (Flemish Regulation on Environmental Permits). In this article, you’ll find everything you need to know about what an energy audit involves, when it is mandatory, and why regular maintenance of air conditioning systems is recommended.
What is an energy audit for air conditioning systems?
An energy audit is a comprehensive assessment of the energy performance of an air conditioning system. Its purpose is to identify inefficiencies, propose improvements, and ensure the system complies with legal standards as outlined in VLAREM II, Chapter 4.4.8.2.
Why is an energy audit important?
By identifying inefficiencies, companies can reduce the energy consumption of their air conditioning systems
Lower energy bills thanks to more efficient system operation
Reduced CO² emissions through optimised energy use
Systems with a total nominal cooling capacity of ≥ 12 kW (at building level) are legally required to undergo an energy audit every 5 years.
Who is required to perform an energy audit?
The obligation applies to:
Air conditioning systems with a nominal capacity of 12 kW or more at building level
Both residential, commercial, and industrial systems
How does an energy audit work?
An energy audit is carried out by a certified expert and includes the following steps:
System inspection
Evaluation of the design, configuration, and operation of the air conditioning system
Review of technical documents such as installation and maintenance reports
Performance measurement
Analysis of the system’s energy performance
Identification of inefficiencies, such as excessive energy use or malfunctioning components
Optimisation recommendations
Suggestions for reducing energy consumption
Advice on upgrades or component replacements
Reporting
A detailed audit report with findings and recommendations
A declaration of conformity if the system meets the required standards
How often must an energy audit be performed?
According to VLAREM II, the audit frequency depends on the system’s nominal cooling capacity:
≥ 12 kW and < 50 kW: Audit required every 5 years
≥ 50 kW and < 250 kW: Audit required every 3 years
≥ 250 kW: Audit required every 2 years
In addition, regular maintenance is recommended to maintain efficiency and avoid system failures.
Why choose Artion for your energy audit?
At Artion, we offer:
Complete peace of mind: Artion ensures timely audits by one of our certified expert partners
Comprehensive reporting: Clear and transparent reports with recommendations, so you always know the status of all your systems
Time savings: With Artion, you only need to act on certificates with remarks or violations. ‘A-certificates’ require no further action
Focus on liability: Artion provides a clear overview of all installations that require action, helping you address them in the right order and stay fully compliant
With Artion, you choose reliability, quality, and a worry-free inspection process.
Frequently asked questions about air conditioning energy audits
Why is an energy audit mandatory?
An audit is required to reduce energy waste, lower costs, and minimise environmental impact. It also ensures compliance with European and national regulations.
Who is allowed to carry out an energy audit?
Only certified air conditioning energy experts are authorised to perform these audits.
What happens if my system does not meet the standards?
If a system is non-compliant, you’ll receive a report with recommendations. You are legally required to make the necessary changes before a declaration of conformity can be issued.
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Make a no-obligation appointment with one of our experts or contact us regarding your situation.