Desert cooler, proper duct
Evaporative (desert) duct installation in Breiman
Evaporative duct installation in Breiman suits the spacious buildings, warehouses and factories on Jeddah's eastern edge. The system distributes cool air through galvanised metal ducts from roof-mounted evaporative units that rely on evaporation.
- 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.
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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.
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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
Breiman is an industrial and commercial zone with large buildings, high ceilings and open spaces, making desert AC a very cost-effective choice instead of multiple split units. Warehouses, workshops and factories here need uniform cool-air distribution, and the sun-exposed roof allows the evaporative cooler to be mounted easily with safe access for maintenance. High temperatures and relatively low humidity in the east support evaporative efficiency better than the coastal zones.
Breiman lies in east Jeddah, an industrial and storage zone with spacious buildings, high ceilings and large open areas.
Most warehouses and factories in Breiman need high-capacity evaporative units and wide duct runs to cover the vast open spaces.
The AC setup in Breiman
- 1
High-capacity roof-mounted evaporative cooler
Large warehouses need high-output evaporative coolers to efficiently cool the vast open spaces.
- 2
Wide galvanised metal duct network
Galvanised metal ducts distribute cool air from the roof across the large space and withstand direct sun and dust exposure.
- 3
Air exhaust openings distributed across the walls
Exhaust openings are positioned around the warehouse or factory walls, letting hot air exit and maintaining natural air circulation.
Before the visit
Before our visit in Breiman
- 1
Confirm safe roof access
Ensure the roof is safe to walk on and that stairs or a ladder provide easy access. The team needs safe roof access to mount the cooler and run the ducts.
- 2
Map out electrical and water connections
Identify the nearest electrical connection and water source for the cooler before the visit, so we avoid unnecessary long runs.
- 3
Tell us which spaces need cooling
Clarify which areas or sections need cooling, so we can size the cooler and duct runs accurately.
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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.
Do evaporative coolers work well in our large warehouses?
Yes, the spacious interiors and high ceilings in Breiman are ideal for evaporative systems. Water evaporation maintains even cooling across the entire space with minimal power draw.
Our roof gets direct sun, how do you protect the cooler and ducts from the heat?
We select high-spec evaporative coolers and galvanised metal ducts rated for direct sun exposure. We mount them on secure brackets and carefully slope excess water drains to prevent roof leaks.
Humidity is low in the east, does that help evaporative cooling?
Yes, the low humidity and high heat in Breiman give evaporative cooling higher efficiency. The larger gap between air temperature and dew point allows water to cool the air faster and more effectively.
The ducts need long roof runs, is the existing power supply enough?
That depends on the cooler capacity needed and how far the duct runs. The site survey confirms whether your current electrical connections are sufficient or need upgrading.
