FAQ
4. FAQ: How Marquis Intelligence works
This FAQ section explains how Marquis Intelligence works through the project approach the company applies in practice.
It presents a methodological framework based on expert assessment, responsible engineering, and system performance monitoring during operation.
The answers cover the key phases of work.
These include initial consultations and analysis, followed by design and implementation.
In addition, they explain result verification, user training, and long-term system maintenance.
As a result, this section helps readers clearly understand how Marquis Intelligence approaches each project.
It also explains how the company ensures stable and verifiable results in ventilation and air purification.
The 4D air purification process shows how Marquis Intelligence works in practice.
It includes four key steps: diagnostics, design, implementation, and long-term system performance monitoring.
First, Marquis Intelligence analyses the facility, the air quality challenge, and the client’s requirements.
Then, the team designs the appropriate technical solution.
After that, Marquis Intelligence implements the system.
Finally, the company monitors long-term performance during operation.
This process forms part of a broader internal methodology, known as the 4×4D framework.
However, Marquis Intelligence does not make the full details of this internal methodology publicly available.
Still, the company applies the 4D process consistently across projects of different sizes and purposes.
CONFIRMATION
Marquis Intelligence uses this process as a mandatory internal procedure for all projects.
The company has applied it since it established the methodology.
In other words, the team follows the same process regardless of the type or size of the facility.
Therefore, the approach applies equally to small-scale and large-scale projects.
More about the 4D matrix can be found in the article by Dragan Varagić.
Marquis Intelligence has collaborated with Dragan Varagić for many years.
Consultations with Marquis Intelligence show another important part of how Marquis Intelligence works.
First, the team analyses the facility.
Then, it reviews the available project documentation.
In addition, Marquis Intelligence may consider air quality measurements when they are available or required.
After that, the company develops a personalized plan for the specific case.
Throughout this process, Marquis Intelligence relies on transparent communication.
At the same time, the team adapts each solution to the real conditions of the project.
CONFIRMATION
In practice, the best solution often becomes clear only after several steps.
First, Marquis Intelligence reviews the documentation.
Then, the team assesses the site and discusses the problem with the client.
As a result, the most effective solution may be something the client had not previously considered.
For example, the owner of a private villa had poor air quality in a home gym.
At first, the client did not trust bipolar air ionization.
However, after reviewing the documentation and inspecting the facility, Marquis Intelligence identified bipolar ionization as the most techno-economically efficient solution.
In addition, the team implemented a special control loop to further optimize costs.
Later, an independent third party engaged by the investor verified the results.
More details can be found in the Marquis Intelligence blog post:
Marquis Intelligence does not perform official accredited laboratory air quality measurements.
However, the company conducts internal measurements as an integral part of system performance verification and quality control.
In practice, Marquis Intelligence treats internal measurements as mandatory.
When the investor requires independent verification, an accredited laboratory performs the measurements.
This often forms part of contractual and warranty requirements.
As a result, the client receives confirmation of system efficiency and guaranteed performance parameters.
CONFIRMATION
Marquis Intelligence has faced the most demanding contractual requirements for guaranteed system performance in two notable cases.
Industrial flue gas purification plant – Dijamant, Zrenjanin
First, Marquis Intelligence committed to achieving guaranteed outlet parameters for flue gas purification from a biomass boiler.
The guaranteed value was 50 mg/m³ PM10.
The boiler used sunflower husk as fuel.
Marquis Intelligence designed, supplied, installed, and commissioned the system.
The system included an electrostatic precipitator by ESC Umwelttechnik, Germany.
In addition, the project included flue gas ducts, heat exchangers, and a continuous PM monitoring system.
Finally, guarantee measurements showed more than satisfactory results.
More details can be found in the Marquis Intelligence LinkedIn post:
Projekat DIJAMANT, Zrenjanin
Meat industry – Carnex, Vrbas
Marquis Intelligence also signed a contract with Carnex for a ventilation and air purification system.
The system served a production line for peeled sausages.
Due to complex production conditions, the contract required a specific result.
The system had to ensure air free of specifically defined microorganisms at the production line.
The investor selected the Meat Institute to perform the measurements.
After implementation, the results were fully satisfactory.
More about these solutions can be found on the Marquis Intelligence website in the references section:
https://www.marquis.rs/#our-references.
Marquis Intelligence applies automated systems with sensor-based control, enabling continuous monitoring and real-time control of air output parameters.
Depending on the type of solution and project requirements, additional methods of performance verification are also used. System performance and air quality parameters are often rechecked after a certain period, including verification by accredited laboratories, while in some cases the investor may use their own laboratory facilities.
CONFIRMATION
- Bottled water production – Knjaz Miloš, Aranđelovac
An internal laboratory performs daily monitoring of treated air parameters as part of hygiene control in the production process.
- Private residential buildings
In some private apartments, additional air quality testing has been conducted years after installation, to confirm the long-term effectiveness of the system.
- Industrial plant – Dijamant, Zrenjanin
The flue gas purification system includes automatic monitoring of particle concentration, along with legally required periodic verification by an accredited laboratory.
Yes. Marquis Intelligence provides user training after installation.
The training explains how users should operate the installed systems and equipment.
In addition, Marquis Intelligence provides ongoing technical support.
The company also documents each training session.
This documentation includes a training record and a list of trained personnel.
As a result, users receive clear operational guidance.
At the same time, Marquis Intelligence continues to support proper system use and long-term performance.
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Advanced system users often need additional technical information.
They may also require more detailed support after installation.
For example, an IT company recently requested further clarification about system monitoring software.
This company operates multiple systems designed, supplied, and maintained by Marquis Intelligence.
The software monitors system performance and regulates operating intensity.
It uses sensor readings such as ozone levels, volatile organic compounds, or VOCs, and formaldehyde.
Therefore, this type of support helps users understand both system operation and performance control in real conditions.
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Yes. Marquis Intelligence provides maintenance services for installed equipment and systems.
In practice, the company can organize maintenance in several ways.
These include preventive maintenance, corrective maintenance, and combined maintenance.
Preventive maintenance helps keep systems stable and efficient.
Corrective maintenance, on the other hand, addresses faults when they appear.
In addition, combined maintenance often gives the best long-term results.
Service activities also provide valuable feedback.
They show how systems perform during real operation.
Moreover, they help Marquis Intelligence understand user satisfaction and improve its services.
CONFIRMATION
The maintenance process often confirms system importance in real operating conditions.
It also shows system performance beyond formal measurements.
In practice, user experience and perception play a significant role.
Example – Multi-story IT office building in Belgrade
During preventive maintenance in an office building, Marquis Intelligence inspected two identical ventilation systems.
Both systems had bipolar air ionization.
However, the team identified damage on several ionization tubes in one system.
For safety reasons, technicians temporarily removed these tubes.
During that period, the user conducted air quality measurements.
The results showed higher levels of VOCs and fine particles in the part of the building with fewer active ionization tubes.
Example – Skyline Tower, Belgrade
In the Skyline business tower, Marquis Intelligence installed 50 bipolar ionization systems.
These systems included a total of 200 devices integrated into central HVAC systems.
Although the devices had self-cleaning functionality, Marquis Intelligence informed the client that regular maintenance remains essential.
Regular maintenance supports proper operation, efficiency, and safety.
During one service inspection, the team detected a malfunction in one device.
Therefore, technicians temporarily switched off that device.
Shortly afterward, an employee working in that zone reported a noticeable decline in air quality.
More details can be found in the Marquis Intelligence blog:
Maintenance of HVAC and IAQ systems – the pillar of reliability
Supervision of system installations designed by Marquis Intelligence is carried out by a professional team led by a licensed engineer, in accordance with the Law on Planning and Construction and relevant regulations.
The supervision covers both technical compliance with the design and the quality and safety of installation works.
CONFIRMATION
On complex projects such as hotels, hospitals, and facilities with special operational requirements, Marquis Intelligence applies enhanced engineering supervision, including a multi-level internal control system and final testing before system commissioning.
After installation, Marquis Intelligence provides clients with complete technical documentation.
This documentation includes:
- certificates,
- user manuals,
- wiring and connection diagrams,
- declarations of conformity,
- warranty documents.
In addition, the client signs a formal handover document.
This document confirms the delivery of all technical documentation.
When required, Marquis Intelligence also prepares a final technical report.
This report contains system performance parameters after commissioning.
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In facilities such as office buildings and industrial plants, internal and external technical audits often require this documentation.
For this reason, the documentation becomes part of the facility’s technical dossier.
In many cases, it also supports certification processes, not only technical acceptance.
In addition to mandatory financial reports such as balance sheets and income statements, Marquis Intelligence applies advanced internal analysis that includes: cash flow tracking, cost structure analysis, and especially revenue distribution by projects, service segments, and client types.
This approach enables data-driven strategic decision-making and long-term optimization of the business model.
CONFIRMATION
Within quarterly internal evaluations, the contribution of each project type to overall business efficiency and sustainability is analyzed.
Special attention is given to projects that simultaneously contribute to: team expertise development, innovation, and revenue generation, which helps define priorities for future periods.
More information about Marquis Intelligence business performance can be found in the following blog posts: