Chiller and AHU installation
Chiller & AHU installation in Al Shara'i
Chiller and AHU installation in Al Shara'i demands precision in large buildings, hotels and hospitals. Alrabih's team mounts units on vibration-isolated bases, fully insulates the chilled water lines, and tests the entire system before handover.
- Vibration isolation
- Aluminium cladding
- Full commissioning
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
When you need this installation
- 1
A new commercial or government building
The building is ready but the central cooling plant is not yet installed. You need a team to lift the chiller to the roof, prepare the bases and run chilled water pipework to AHUs on every floor.
- 2
An existing unit vibrates and makes noise
Constant vibration loosens pipe joints and fatigues mechanical components. If the unit is not sitting on proper vibration isolators, that is corrected during reinstallation; the site survey determines which isolator type is needed.
- 3
Extending an existing building
Adding floors or new areas means extra AHUs and extending the chilled water network. We connect the extension to the existing plant after verifying the current chiller capacity, which the site study determines.
Who it's for
Building a hospital or hotel that needs a central cooling plant
We visit the site before the building is complete to plan pipe routes and the plant room, then lift the chiller, mount AHUs on every floor and commission the full system.
Ask on WhatsAppReplaced an old chiller but connections do not match
We survey the new chiller and existing pipework, fabricate any transition pieces needed in our workshop, then reconnect and pressure-test the network before start-up.
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What the installation covers
- Chiller lifted onto isolated base
- Chilled pipework run and insulated
- Aluminium cladding of pipework
- AHUs mounted and duct-connected
- Pressure test and commissioning
How we work
How we work
- 1
Site survey and design
We visit the site to measure the plant room or roof, check pipe and duct routes, and determine lifting requirements and the right vibration isolator type for the building.
- 2
Base preparation and lifting
We prepare the chiller and AHU bases, fix the vibration isolators, lift the units into final position and check they are level before any connections are made.
- 3
Pipework and ductwork
We run the chilled water pipes, insulate them and clad them in aluminium sheet to resist Jeddah's humid salty air, then connect each AHU to its duct network.
- 4
Pressure test and commissioning
We pressure-test the pipework to confirm there are no leaks, then run the full system, measure air conditions at each AHU and adjust dampers until the required air distribution is achieved.
Considered installation or a rushed one?
| Alrabih | The usual way | |
|---|---|---|
| Chiller base | Isolators matched to the site | Bolted straight to concrete |
| Pipe insulation | Full insulation with aluminium cladding | Partial or left bare |
| Pipe test | Pressure test before start-up | Started without testing |
| Air balancing | Measured and dampers adjusted | Unbalanced airflow |
| Transition pieces | Fabricated in our own workshop | Improvised or ill-fitting |
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 Shara'i is a relatively modern north-east district with a regular layout, hosting residential, hotel and medical buildings of varying heights and fairly wide roofs. Large buildings here typically need complex central cooling systems with chillers and professional air distribution, and the open roofs provide room for units away from occupied areas, but full thermal and sound insulation of the pipework and vibration isolation are essential to protect the structures and suspended ceilings below.
Al Shara'i lies in north-east Jeddah, a district of relatively modern buildings with spacious roofs.
Most large buildings in Al Shara'i use medium to large-capacity chillers with multi-storey air distribution networks.
The AC setup in Al Shara'i
- 1
Chillers with multi-storey air distribution networks
Large buildings here use central chillers feeding AHUs distributed across multiple floors via insulated pipework runs.
- 2
Vibration-isolation bases on roofs
We mount chillers on rubber or spring isolation bases to protect the concrete structure and suspended ceilings from vibration and noise.
- 3
Chilled pipework fully insulated and aluminium-clad
All chilled water lines receive thick insulation and aluminium cladding to prevent condensation and moisture damage to ceilings and walls.
Before the visit
Before our visit in Al Shara'i
- 1
Confirm equipment access to the roof
Check that adequate lifts or crane space exist on the roof beforehand, and tell us the available roof dimensions and access routes.
- 2
Plan the chiller and unit mounting locations
Work with building management to identify the best location for the chiller away from occupied areas and where noise impact is minimised.
- 3
Verify sufficient electrical supply is available
Confirm the roof or mechanical room electrical panel can handle the full power load of the chiller and all AHUs.
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FAQ
Questions about Chiller & AHU installation
How is the chiller unit lifted to the roof?
The method depends on the chiller weight, the building height and the space available around the site. The survey determines whether a crane or other equipment is used, and we verify that the roof structure can carry the load before setting the unit on its base.
Why do chilled water pipes need aluminium cladding in Jeddah?
Chilled water pipes carry cold water through hot, humid, salty air. Without external protection, insulation deteriorates from moisture and salt and loses effectiveness. Aluminium cladding protects the insulation from outdoor air on rooftops and the humid interior air found in coastal buildings like those in Jeddah.
Can you connect AHUs to an existing duct network?
Yes, if the existing ducts are in good condition and match the new unit's connections. At the survey we check the duct opening sizes, the duct condition and the plenum arrangement, and confirm whether part of the network needs adjustment or transition pieces need to be fabricated in our workshop.
What does system commissioning involve?
After the pipe pressure test we run the chiller and AHUs, measuring air temperature and pressure at each unit's outlets. We adjust dampers and valves to achieve the designed air and water flow to every zone in the building, and record the final readings before handover.
What is the difference between placing the chiller on concrete inertia bases and on rubber anti-vibration mounts?
A concrete inertia base adds mass that dampens the chiller's own vibration and holds the unit steady when the compressor starts. Rubber anti-vibration mounts interrupt the path of vibration before it reaches the roof slab. Whether to use one approach or both depends on the site survey, which takes into account the roof structure, the size of the unit and the building design.
Modern buildings here need complex chillers and distribution units. How do you handle such installations?
We mount chillers on vibration-isolated bases, fully insulate the pipework thermally and acoustically, then test the entire system before handover.
The roofs are wide here, but how do you get the heavy equipment up there?
We plan the access route beforehand and coordinate with building management on using lifts or cranes based on unit weight and building specifications.
Chilled water in the pipes causes condensation. How do you prevent moisture from dripping on suspended ceilings?
We insulate all chilled water lines with thick thermal insulation and cover them with aluminium cladding to protect the insulation and prevent moisture seepage.
How many electrical circuits do the chiller and units need here, and where do they connect?
It depends on the chiller capacity and unit count, but we verify the roof and equipment power supply before installation and ensure all wiring is adequate and safe for continuous operation.
