PACKAGE 01
Electrical power
Load calculation, main LV switchboard, distribution, earthing and standby.
Package detailsKinshasa · Democratic Republic of the Congo
The networks that hold
a building together.
Electrical power, air conditioning, plumbing and automation. We design, install and maintain the four technical packages that decide a building's comfort, safety and running costs.
Treating the packages separately means paying twice for the same mistake.
An electrical fault stops a pump. An undersized duct runs a chiller into overload. We hold the four packages together, from sizing to handover.
Scope
Four packages, one coordination.
PACKAGE 02
Air conditioning & air
Heat load calculation, VRV, air handling, ventilation, smoke extraction.
Package detailsPACKAGE 03
Sanitary plumbing
Supply, pressure boosting, hot water, drainage.
Package detailsPACKAGE 04
Automation & security
Fire detection, access control, video, building management.
Package detailsSTELLAIRE in figures
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04
Technical packages covered, coordinated together
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Projects delivered since founding
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Square metres fitted out
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Staff, including technicians
Method
Understand before intervening.
Most of the breakdowns we are called in to repair are not breakdowns: they are installations undersized from the outset. So we always begin by measuring.
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Diagnosis
Survey of the existing installation, measurements, reading of drawings, discussion with the operator. We look for the cause, not the symptom.
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Study
Load calculation, heat load calculation, network sizing. Drawings, bill of quantities and detailed costing.
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Execution
Procurement, installation, systematic labelling and coordination with the other trades.
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Handover
Tests, recorded measurements, operator training and delivery of the complete technical file.
Where we work
Where the engineering leaves no margin.
Every type of building brings its own constraints: continuity of service, hygiene, personal safety, running costs. We match the sizing to the actual use.
- Offices & head offices Continuity of service
- Retail & hospitality Comfort and running costs
- Healthcare & laboratories Hygiene and personal safety
- High-end residential Quiet running and fine control
- Light industry & logistics Power and availability
- Refurbishment of existing buildings Constraints of the standing structure
Next step
Let's start with a diagnosis.
Describe the building, its use and what is not working. We come back to you with the right question before proposing any solution.
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- Expertise
Technical scope
Four packages, one coordination.
We design, install and maintain the four technical building packages. Treating them separately means paying twice for the same mistake: we hold them together, from sizing to handover.
PACKAGE 01
Electrical power
From the incoming supply to the last outgoing circuit. Electrical distribution decides everything else: a pump, a chiller, a server rack are worth no more than the supply feeding them.
Request a studyWhat we take on
- Load calculationInstalled load, diversity, demand, spare capacity. Sizing comes before the choice of equipment.
- Main and distribution boardsBusbars, protection devices, discrimination, back-up protection, labelling of outgoing circuits.
- DistributionCable routes, cross-sections calculated on voltage drop, separation of power and data cabling.
- LightingIlluminance levels by use, zone control, emergency lighting and escape-route marking.
- EarthingEarth electrode, equipotential bonding, resistance measured at handover.
- Standby powerGenerator sets, changeover switches, UPS units, autonomy calculated on the real load.
Standards applied
| Standard | Subject |
|---|---|
| IEC 60364 / NF C 15-100 | Low-voltage electrical installations |
| IEC 60947 / 61439 | Switchgear and switchgear assemblies |
| IEC 62305 | Lightning protection |
Documents delivered
- Load calculation report
- General and per-board single-line diagrams
- Equipment schedule and data sheets
- Test records: insulation, continuity, RCDs
- As-built drawing of cable routes
PACKAGE 02
Air conditioning & air handling
The heat load calculation before the catalogue. In an equatorial climate an oversized unit short-cycles and dehumidifies poorly; undersized, it runs continuously and dies young.
Request a studyWhat we take on
- Heat load calculationSolar gains, internal gains, fresh-air rates, thermal mass. Room by room, not floor by floor.
- Split and VRVSelection of condensing units, permissible pipe runs and height differences, layout of indoor units.
- Air handling unitsFiltration, coils, heat recovery, return-air control.
- DuctworkDucts sized on pressure drop, dampers, terminals, measured balancing.
- VentilationExtract from washrooms and kitchens, make-up air, separation of environments.
- Smoke extractionSmoke reservoirs, vents, smoke extract fans, controls and interlocks.
Standards applied
| Standard | Subject |
|---|---|
| EN 12831 / ASHRAE Fundamentals | Thermal load calculation |
| ASHRAE 62.1 | Indoor air quality and fresh-air rates |
| EN 12599 / NEBB | Commissioning and balancing of air systems |
Documents delivered
- Heat load calculation, room by room
- Schematic diagrams and duct schedules
- Equipment selection and performance curves
- Balancing records: flow rates measured at each terminal
- Operating instructions and maintenance intervals
PACKAGE 03
Sanitary plumbing
Networks calculated, labelled and tested before they are closed up. A water system cannot be corrected afterwards: what is buried in a slab stays there.
Request a studyWhat we take on
- Supply and meteringService connection, main and sub-metering, backflow protection.
- Pressure boosting and storageTanks, booster sets, control, autonomy in the event of a mains outage.
- Domestic hot waterGeneration, secondary circulation, balancing, control of legionella risk.
- DistributionCross-sections calculated on probable flow, controlled velocities, insulation and labelling.
- DrainageFoul and waste water, primary and secondary venting, falls, inspection chambers and connections.
- Water treatmentFiltration, softening, disinfection according to the quality of the source.
Standards applied
| Standard | Subject |
|---|---|
| EN 806 / DTU 60.11 | Water supply intended for human consumption |
| EN 12056 | Gravity drainage systems |
| EN 1717 | Protection against drinking-water contamination |
Documents delivered
- Calculation report for flow rates and pipe sizes
- Schematic diagrams of the networks
- Pressure-test records before closing up
- Record of pressures and flow rates at the outlets
- As-built drawing of connections and chambers
PACKAGE 04
Automation & security
The first three packages become controllable. Without supervision, an installation can only be monitored by walking through it — and drifts show up on the bill, six months too late.
Request a studyWhat we take on
- Fire detectionDetectors, manual call points, control panel, sounders, interlocks.
- Access controlReaders, strikes, anti-passback, rights management, release on alarm.
- Video surveillanceCalculated fields of view, recording, retention period, day-to-day use.
- Structured cablingCopper and fibre cabling, racks, link certification.
- Building management systemMeasurement points, trends, alarms, scenarios, open protocols.
- Supervision and maintenanceOn-call cover, maintenance contract, history of interventions.
Standards applied
| Standard | Subject |
|---|---|
| NFPA 72 / EN 54 | Fire detection and alarm systems |
| ISO/IEC 11801 | Generic cabling for premises |
| BACnet / Modbus / KNX | Open building-management protocols |
Documents delivered
- Layout drawing of detectors and zones
- Cause-and-effect matrix for the interlocks
- Certification of copper and fibre links
- List of supervision points and alarm thresholds
- Accounts and roles handed over to the operator
Next step
Let's start with a diagnosis.
Describe the building, its use and what is not working. We come back to you with the right question before proposing any solution.
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- Sectors
Where we work
Where the engineering leaves no margin.
Every type of building brings its own constraints: continuity of service, hygiene, personal safety, running costs. We match the sizing to the actual use, not to a standard.
Offices & head offices
An office floor lives on its IT continuity and its comfort. Both are paid for in energy if no one measures.
- UPS sized on the real load of the racks, not on their nameplate
- Thermal zoning by façade orientation and by occupancy
- Sub-metering per floor for recharging costs
- Lighting controlled by presence detection and daylight harvesting
Retail & hospitality
Peaks decide everything: the evening peak for hot water, the midday peak in the kitchen, the weekend peak in footfall.
- Hot water generation calculated on the real diversity of the rooms
- Kitchen ventilation with make-up air and grease traps
- Public safety: smoke extraction, escape-route marking, release on alarm
- Controlled demand to avoid exceeding the supply capacity
Healthcare & laboratories
Here the building services are part of the care. An outage or a cross-contamination is not a comfort incident.
- Standby power with a changeover time compatible with the equipment
- Air quality: filtration, pressure cascades, air change rates
- Controlled water networks, circulation and prevention of stagnation
- Written traceability of every intervention in sensitive areas
High-end residential
The requirement is not power but discretion: the services must be neither seen nor heard.
- Sound levels held at the indoor units and in the ductwork
- Concealed networks, labelled and documented for future maintenance
- Lighting scenes and centralised control
- Autonomy in the event of a public network outage
Light industry & logistics
Volumes, motive power and cycles. Sizing is done on the real duty, starting currents included.
- Protection of motor circuits and power factor correction
- Ventilation and extraction matched to the process
- High-bay lighting with planned maintenance
- Planned preventive maintenance on critical equipment
Refurbishment of existing buildings
The hardest case: bringing an installation up to standard without stopping operations, when no one has the drawings.
- Survey and reconstruction of the existing schematic before any work
- Immediate making-safe of dangerous points
- Phasing by zone to keep the building in use
- Progressive changeover, kept under control
Next step
Let's start with a diagnosis.
Describe the building, its use and what is not working. We come back to you with the right question before proposing any solution.
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- Projects
References
Every project leaves a file behind.
For each project: verifiable technical data — building type, area, installed power and values recorded at handover. Not mood photographs.
Projects delivered
Every project, its file.
For each project: the building type, the area, the installed power and the values recorded at handover. The photograph shows the project, the figures prove it — every card carries both, and its complete technical file is available on request.
Office building
Eight office floors. UPS sized on the recorded load of the racks, sub-metering per floor, lighting controlled by presence detection.
Contracted power630 kVA
Standby400 kVA generator
PowerAirAutomation630 kVA
View the project
74-room hotel
Hot water generation calculated on the real diversity of the rooms. Kitchen ventilation with make-up air. Smoke extraction and release on alarm.
Peak hot water4,200 l/h
Cooling capacity710 kW
PowerAirWaterAutomation820 kVA
View the project
Health centre
Continuity of service in critical areas. Separate air handling for the operating suite and sterilisation. Circulating water network held at temperature.
Changeover to standby< 8 s
Air changes, operating suite15 ac/h
PowerAirWater310 kVA
View the project
Warehouse and offices
High-bay lighting controlled by zone, fire detection throughout the volume, access control on the loading docks and alarm relay.
Lighting points612
Lighting load0.9 W/m²/100 lux
PowerAutomation480 kVA
View the project
32-unit residential development
Rising mains and metering per dwelling. Variable-speed water boosting. Door entry and access control at the gate and in the lobbies.
Sub-meters32
Maintained pressure3.2 bar
PowerWaterAutomation290 kVA
View the project
Bank branch
Server room cooled with redundancy. UPS and generator for the continuity of the branch. Video surveillance, intruder detection and access control.
Cooling redundancyN+1
UPS autonomy30 min
PowerAirAutomation160 kVA
View the project
Preparing a tender?
References comparable to your project — building type, area, power, packages involved — are sent on request, with the agreement of the clients concerned. Tell us the nature of your tender; we reply within 48 hours.
Prequalification pack
Legal status, insurance, staff and equipment, safety policy and references: the complete pack is available to buyers and design offices at tender stage.
Card template
What every reference will contain.
A project card is not a photo album. It is a document that a design office or a buyer must be able to compare with their own brief.
Building type—Offices, hotel, healthcare…
Area—m² · floors
Installed power—kVA
Cooling capacity—kW
Packages delivered—01 · 02 · 03 · 04
Year—Site duration
The context
- Client and lead designer
- Location and building type
- Main constraint of the brief
- Operating context: new build or building in use
The technical response
- Sizing approach adopted, and why
- Main equipment and standards applied
- Particular difficulties resolved during the works
- Coordination with the other trades
The measured result
- Values recorded at handover
- Anonymised extract of the single-line diagram
- Associated maintenance contract, where applicable
- The client's feedback, with their written agreement
Next step
Let's start with a diagnosis.
Describe the building, its use and what is not working. We come back to you with the right question before proposing any solution.
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- Company
Who we are
An engineering company, not a reseller.
STELLAIRE SARLU is a Congolese company specialising in building services. We calculate before we order, and we document before we leave.
Our position
Most of the breakdowns we are called in to repair are not breakdowns: they are installations undersized from the outset. A chiller chosen from a catalogue rather than from a heat load calculation, a cable selected on its current rating without checking the voltage drop, a hot water riser with no return circulation.
These choices do not show at handover. They show three years later, in the running costs and in the service life of the equipment. That is why we always begin by measuring, and why we hand over a calculation report with every proposal.
The founder, Georges Kabamba, is an engineer. The company is built around that skill: the design work is done in-house, it is not subcontracted to a supplier with an interest in selling the most expensive machine.
Legal identity
- Registered nameSTELLAIRE SARLU
- RCCMDC/KNG/RCCM/25-B-01921
- NIFA2536810P
- ID NAT01-C2601-N74123R
- Registered officeAvenue Colonel Mondjiba, Silikin Village, Socimat, Kinshasa
- CurrenciesCongolese franc and US dollar
Next
What there is to check about us.
A company is judged on what it agrees to show. Three ways in, no detours.
"A company is judged on what it agrees to show."
Key figures
What can be verified.
The values below are to be filled in with the company’s real data. No figure should appear here if it cannot be justified to a buyer.
Projects delivered—Since founding
Area fitted out—m² combined
Installed power—kVA combined
Headcount—Of which technicians
Safety, quality, environment
No one gets hurt on a well-prepared site.
Safety is not a contract clause: it is a condition of access to the sites of our industrial and institutional clients. It is prepared before the work begins.
Before the work
- Written task-by-task risk assessment
- Isolation and verification that the supply is dead
- Prevention plan agreed with the site operator
- Verification of the team's authorisations
During
- Personal protective equipment matched to the risk
- Marking out and locking off of work areas
- Measuring instruments checked and calibrated
- Immediate reporting of dangerous situations
Indicators monitored
- Lost-time accident frequency rate — to be completed
- Hours worked without an accident — to be completed
- Training hours per person per year — to be completed
- Number of dangerous situations reported — to be completed
Certifications, approvals, insurance
The documents in a prequalification pack.
This table is to be completed as the documents are obtained. An honest "in progress" is worth more than an empty box or an unverifiable claim.
| Document | Subject | Status | Validity |
|---|---|---|---|
| ISO 9001 | Quality management | To be completed | — |
| ISO 45001 | Occupational health and safety | To be completed | — |
| ISO 14001 | Environmental management | To be completed | — |
| Professional indemnity insurance | Cover for damage caused to third parties | To be completed | — |
| Ten-year structural liability | Cover for defects affecting the works | To be completed | — |
| Electrical work authorisations | Staff working on live electrical systems | To be completed | — |
| Ministerial approval | Construction company classification | To be completed | — |
Next step
Let's start with a diagnosis.
Describe the building, its use and what is not working. We come back to you with the right question before proposing any solution.
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- Request a study
Next step
Describe the building. We will ask the questions.
The more precise your description, the more useful our first reply. No field is used for cold calling: they are there to assess whether we are the right people for your project.
Request recorded
We have received it. Keep the reference number below: it lets you find your request at any time. You can also write to contact@stellairesarlu.com or call +243 838 859 500.
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- Contact
Contact us
A person, not a switchboard.
For a study request, the dedicated form saves us one exchange. For everything else — references, prequalification pack, partnership, job application — write or call.
Message recorded
We have received it. Keep the reference number below: it lets you find your message at any time. You can also write to contact@stellairesarlu.com.
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- Legal notice
Legal information
Legal notice.
Publisher identification, hosting, intellectual property and processing of personal data.
Site publisher
STELLAIRE SARLU, a single-member limited liability company under Congolese law.
Registered office: Avenue Colonel Mondjiba, Silikin Village, Socimat, Kinshasa, DR Congo
RCCM: DC/KNG/RCCM/25-B-01921
NIF: A2536810P
ID NAT: 01-C2601-N74123R
Phone: +243 838 859 500
Email: contact@stellairesarlu.com
Publication director: Georges Kabamba, manager.
Hosting
Registered name, address and telephone number of the host — to be completed at go-live.
Intellectual property
All the content on this site — text, drawings, photographs, logotype and code — is the property of STELLAIRE SARLU unless stated otherwise. Any reproduction or representation, in whole or in part, without prior written authorisation is prohibited.
Personal data
The data submitted through the forms on this site — name, organisation, contact details and project description — is used solely to handle your request. It is neither sold, nor rented, nor used for cold calling.
Retention: three years from the last exchange, then deletion.
Your rights: you may request access to, correction of or deletion of the data concerning you by writing to contact@stellairesarlu.com. We reply within thirty days.
Trackers
This site places no advertising tracker and uses no profiling cookie. The only data kept locally by your browser is, where applicable, your display preference.
Accessibility
This site aims for level AA of the Web Content Accessibility Guidelines (WCAG 2.2). If you have difficulty accessing any information, please report it to contact@stellairesarlu.com : we will correct it and send you the content by another means.
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Every page and every section of the site, gathered on a single screen. To go straight to where you already know you need to be.