HVAC electro-mechanical
Electro-mechanical works in Al Mulaisa
In Al Mulaisa, south Jeddah, hotels and large residential complexes build complex central AC systems needing precise power panels and expert control wiring. Alrabih handles the full electro-mechanical scope from start to handover.
- Power panels
- Control automation
- Site coordination
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
When these works are needed
- 1
A new central HVAC project
In commercial, government and industrial buildings, fitting units and ducts is not enough. You need electrical runs sized for the loads, a control panel that starts and stops equipment in the right order, and pumps and pipework designed for the building.
- 2
Extending an existing HVAC system
Adding units or new control zones means extra load on the panel and new control cabling. We review the available capacity on site and define what the extension needs before any work starts.
- 3
Electrical faults stopping the equipment
A unit that will not start despite being in good order, a pump that burns out repeatedly, breakers tripping for no clear reason: these are usually a wiring or panel problem, not a fault in the equipment, and need diagnosis from a technician who understands both sides.
Who it's for
Building a new commercial or government project
We review drawings with the main contractor and take on power panels, electrical runs, control automation, pumps and ventilation from start to handover.
Ask on WhatsAppYour HVAC equipment keeps breaking down
We diagnose the electrical and mechanical side of the system and identify whether the fault is in the panel, the wiring or the control circuits before any work begins.
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What the works cover
- Power panels and load distribution
- Electrical runs for HVAC
- Automation and control circuits
- Pumps and pipework installation
- Ventilation and exhaust fans
How we work
How we work
- 1
Review project drawings
We go through the electrical and mechanical drawings with the designer or main contractor and define the power requirements and cable routes before any materials are prepared.
- 2
Site coordination
Electro-mechanical works cross paths with civil works and finishes. We follow the site programme and agree the sequence with other contractors so no trade is held up by a clash.
- 3
Run cables and fit equipment
We pull cables, mount panels, pumps and ventilation fans, then wire the control and automation circuits according to the approved site drawings.
- 4
Coordinated testing and start-up
We test each circuit individually then run the full system together with the AC equipment, checking that automation starts and stops everything in the right order before handover.
Planned coordination or clashes that delay the project?
| Alrabih | The usual way | |
|---|---|---|
| Electrical panel | Sized for the actual load | Rough sizing causes problems later |
| Control wiring | Documented to drawings | Run without documentation |
| Site coordination | Followed with every trade | Each trade works in isolation |
| Start-up test | Full test before handover | Faults found after handover |
| Change documentation | Recorded at handover | Verbal changes, no record |
Everything your AC needs, from one team
From system design and duct fabrication to installation, commissioning and maintenance.
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Some of our work
Ductwork, rooftop units and diffusers, from work we've completed in Jeddah.
Customer reviews
What our customers say
- Muhammadramzan 2641
“MashaaAllah. Services are so good. Behaviour and kindness 100/100. Prices are less then Market. Fully recommended”
- shahzeb armani
“Wow. Prices are so comfortable. Outstanding services. People are so talented and nice”
- Tawfik AlyawerLocal Guide
“U can find all u need for air conditioning”
Your satisfaction matters to us! If you had a great experience with us, we'd love a 5-star rating and a kind review.
Worked with us? Leave a reviewService areas
We come to you anywhere in Jeddah
From Al Shiraa and Al Yaqout in the north to Al Thaghr and Al Quraiyat in the south, with our base in Al Aziziyah.
What sets this district apart
Al Mulaisa is a rapidly growing area with new hotels and residential towers, each requiring separate electrical distribution for pumps, fans and multi-zone temperature control via multiple control units. Close coordination between electrical, mechanical and main contractor teams is vital to avoid clashes in routing and schedule, and Alrabih watches that throughout construction.
Al Mulaisa lies in south Jeddah, a district of large modern hotels and residential projects with advanced central AC systems.
Central distribution systems in the hotels and residential towers here typically need separate backup generators, thick copper piping and dual control connections for safety.
The AC setup in Al Mulaisa
- 1
Multi-zone central distribution system
Hotels and towers need separate electro-mechanical distribution per zone so each floor or wing can control its own temperature independently.
- 2
High-pressure pumps and equipment
Large-scale central systems rely on high-capacity pumps and thick copper piping requiring separate electrical feeds and overload protection.
- 3
Master control panel with backup systems
Large Al Mulaisa projects require an advanced master control panel with separate backup generator feed to ensure continuous operation.
Before the visit
Before our visit in Al Mulaisa
- 1
Obtain the full approved drawings
Submit a copy of the full approved engineering and electrical drawings from the supervising engineer before work starts.
- 2
Confirm the project's expected electrical loads
State the total electrical load for the system (in kilowatts) and available power from the grid before design begins.
- 3
Coordinate with the mechanical team and main contractor
Set a clear schedule among our team, the mechanical team and main contractor to avoid clashes in routing and connections on site.
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FAQ
Questions about Electro-mechanical works
Can you handle the electro-mechanical works when there is already another civil contractor on site?
Yes. We work as a specialist subcontractor alongside the main contractor, coordinating cable routes, pipework and equipment positions with the other trades on site. Before work begins, we identify where our scope crosses the civil and structural work and agree on the sequence of installation to avoid clashes.
What is the difference between the power circuit and the control circuit in an HVAC project?
The power circuit carries current from the panel to the compressor, motor or fan; cable size is set by the load. The control circuit carries low-voltage signals between sensors, thermostats and the controller; it issues run, stop and modulation commands. A fault in either circuit disables the whole system, so each is routed and terminated independently.
Does your work include connecting the automation system to a building management network?
Yes, when a building management network is already present on site. We connect the HVAC control units to the designated interface points and test signal exchange between the two sides. Protocol details and configuration are agreed with the team responsible for the building management network before installation begins.
How do you handle a clash between cable routes and ducts or pipework?
We identify clashes at the planning stage before installation starts, then consult the relevant trades to agree on an alternative route. If a site resolution is not possible, the clash is escalated to the project supervisor for a decision. Priority is always given to keeping the correct bending radius for cables and the required fall on condensate drain pipes, as compromising either affects system performance.
How do you handle a clash between cable routes and ducts or pipework?
Clashes between cable routes, ducts and pipework are common on medium and large projects. We identify them during the drawing review stage, before any trenching or pulling begins, and agree an alternative route with the trades involved. Changing a route on paper is far simpler than reworking it on site.
Do you coordinate with the main contractor during the electro-mechanical works?
Yes, we work in parallel with the main contractor and other trades, submitting schedules in advance so work flows without conflict on site.
How do you ensure my main control panel is connected safely?
We install the panel to approved drawings and test every circuit and switch before handover, providing the contractor with a test certificate.
Al Mulaisa's dry desert air, does it affect the copper connections?
Dry air reduces corrosion, but we fit protective connectors and follow local standards on every connection to extend the system's life.
New residential towers need backup power for AC, how many electrical connections are needed?
That depends on system size and expected loads, which we determine after a full design review, submitting a detailed plan before we start.
