Desert cooler, proper duct
Evaporative (desert) duct installation in Al Shama'il
In Al Shama'il, east Jeddah, evaporative duct installation serves larger residential blocks and commercial buildings with substantial, load-bearing roofs. We install the high-capacity cooler and run galvanised duct with precision to ensure balanced air distribution.
- Sealed roof
- Galvanised duct
- Air changes
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
When you need evaporative cooler duct
- 1
A large workshop or warehouse
Large industrial spaces get very hot in Jeddah summers and split units are expensive to run there. An evaporative cooler with distribution duct brings air to work areas at lower running cost, provided the space is ventilated and not sealed shut.
- 2
A majlis tent or seasonal space
Outdoor majlis areas and seasonal tents do not suit split AC units because of the structure. Evaporative duct delivers a cool air stream as long as the space is open enough for air changes, which the survey confirms.
- 3
Old duct with poor airflow
Old sheet duct cracks over time and air leaks from the joints before reaching the space. On site we check whether the problem is leaking duct, poor distribution, or the cooler size itself.
Who it's for
Need to cool a large workshop at reasonable running cost
We survey the workshop and check its ventilation, then run galvanised duct from the roof cooler to the work areas with exhaust openings that keep air moving through the space.
Ask on WhatsAppYou have an outdoor majlis that needs seasonal cooling
We check how open the majlis is and assess its structure, then design the duct route and exhaust openings so cool air reaches the seating area without humid air building up inside.
Ask on WhatsApp
What the work covers
- Weatherproof roof collar fitted
- G90 galvanised duct runs
- Branch and air outlet connections
- Exhaust openings for air changes
- Airflow check after start-up
How we work
How we work
- 1
Site survey first
We visit, measure the space and check how open it is, because evaporative cooling needs enough ventilation; without it humidity rises inside and the cooling effect drops.
- 2
Plan the duct route
We plan the main duct run, branches, air outlet positions and exhaust opening locations, and show you the layout before any work starts.
- 3
Install duct and seal roof
We open the roof, fit and seal the collar against leaks, then run the galvanised duct and hang it on proper supports so it does not sag.
- 4
Start-up and test
We run the evaporative cooler and check that air reaches every outlet and that the exhaust openings are working so fresh air is visibly moving through the space.
Planned duct or a quick run?
| Alrabih | The usual way | |
|---|---|---|
| Roof seal | Weatherproof, sealed collar | Silicone that cracks in heat |
| Sheet | G90 galvanised | Unspecified gauge |
| Exhaust | Sized openings for air changes | Left to chance |
| Space suitability | Confirmed by survey | Not checked |
| Duct supports | Fixed hangers along the full run | Duct left unsupported |
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 Shama'il is an expanding area with mid-rise residential blocks and some light commercial and industrial facilities. The roofs here are spacious and can bear large cooler units, making evaporative duct a practical choice for distributed cooling. Air exhaust from openings needs careful planning in mixed residential zones to avoid environmental nuisance.
Al Shama'il lies in east Jeddah, an expanding district mixing residential, light commercial, and large available roofs.
Evaporative coolers here are typically medium to high capacity, and duct divides airflow into branches serving different floors or building sections.
The AC setup in Al Shama'il
- 1
High-capacity cooler on shared roof
Multi-storey buildings here need large-capacity coolers on roofs distributing air to multiple flats with precision.
- 2
Main duct trunk with floor-level branches
Main duct descends through the building, then branches into smaller runs per floor or residential unit.
- 3
Exhaust outlets distributed on facades
Air exhaust occurs through openings on the building's external facades, distributed evenly to avoid concentration on one side.
Before the visit
Before our visit in Al Shama'il
- 1
Verify roof integrity and maximum load
Confirm the roof can bear large cooler and duct weight, and there are no existing cracks or water leaks.
- 2
Coordinate with building management on schedule
Notify management of expected start and completion dates, as installation takes longer in large buildings.
- 3
Plan duct routes from roof to spaces
Identify which floors and flats will be served, and where duct outlets and exhaust openings will be on each floor.
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FAQ
Questions about Evaporative (desert) duct installation
Does evaporative cooling work in Jeddah in summer?
Evaporative cooling relies on water evaporation and weakens when humidity is high. In Jeddah, humidity is higher near the coast and lower inland. The survey decides whether the space and the season are suitable, which is why we do not start before visiting the site.
Why do exhaust openings matter as much as the duct runs?
An evaporative cooler pushes fresh air in continuously. Without an exit path, humid air builds up inside and the felt temperature rises. Properly sized exhaust openings keep air moving through, not piling up, and that is the core of how this type of cooling works.
What sheet do you use for the duct?
We use G90 galvanised steel sheet, which resists rust in Jeddah's humid and salty air. The duct sections are formed in our workshop before being taken to site, then hung on supports along the run to stop them sagging.
Can one cooler supply duct to more than one area?
Duct can be branched from one unit to more than one outlet, but each branch reduces the airflow at every opening. The survey decides whether the cooler has enough output for the total area, or whether a separate unit for each wing is the better answer.
Can evaporative cooler duct run through a false ceiling?
Evaporative cooling depends on continuous air movement and exchange, which requires exhaust openings in the same space the duct serves. A false ceiling restricts that flow unless dedicated openings lead air out of the building. The site survey decides whether the structure allows it, because the duct run and the exhaust are designed together as one system, not separately.
Can evaporative duct be installed in a multi-storey residential block in Al Shama'il?
Yes, if the roof is strong enough to bear the cooler and duct weight. The survey ensures even air distribution across all floors.
The streets around our building are narrow, how do you bring installation equipment?
We bring duct and cooler on trucks and agree on the nearest unloading point and safe parking before the visit.
Dust and humidity are high in Al Shama'il, does that affect evaporative efficiency?
High humidity reduces evaporative efficiency, and dust requires seasonal cleaning of the wetted medium. The survey determines if evaporation suits your conditions.
How is power supplied to the roof-mounted cooler?
We run an electrical cable safely from the building's main panel to the roof, and connection is completed before operation begins.
