Desert cooler, proper duct
Evaporative (desert) duct installation in Al Gharbiyah
In Al Gharbiyah, northern Jeddah, upscale villas and large residential complexes receive evaporative duct installation to cool expansive areas. We carefully open the roof, seal against coastal humidity and dust, and build an optimised duct network to the home's needs.
- 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
Al Gharbiyah is an upscale modern district with spacious villas, wide plots and several gated residential complexes, and the large interior spaces and high ceilings respond well to evaporative duct cooling. Proximity to the sea means high humidity and salt air may affect duct and unit metals, so we choose corrosion-resistant materials and seal the roof carefully against moisture and airborne salt.
Al Gharbiyah is in northern Jeddah near the coast, an upscale district of modern villas and gated residential complexes.
Most villas in Al Gharbiyah have insulated flat roofs and open floor plans, making evaporative ducting highly effective at distributing cool air.
The AC setup in Al Gharbiyah
- 1
Distributed evaporative duct throughout the villa with multiple openings
Spacious upscale villas receive a sized duct system from the roof that branches into multiple openings in living, bedroom and office areas.
- 2
Hot air exhaust openings in outdoor spaces
Hot air vents through openings in terraces and outdoor spaces away from living windows and areas.
- 3
Rooftop evaporative unit with premium tank
The evaporative unit and tank mount on an insulated roof with professional-grade power and water connections suited to the villa's standards.
Before the visit
Before our visit in Al Gharbiyah
- 1
Identify which rooms to cool first
Consider your priorities: bedrooms and living areas usually come first, storage and passages second. Tell us your vision so we can plan the distribution properly.
- 2
Ensure safe roof access for the team
Confirm there is a safe roof door or internal ladder, and let us know of any safety or privacy restrictions at the villa that affect installation timing.
- 3
Verify adequate power and water sources
Check for a spare electrical circuit and a water tap near the roof or inside the villa. If neither is available, we may need additional connections.
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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.
Does the high coastal humidity affect evaporative duct performance?
Yes, high coastal humidity reduces evaporative cooling efficiency somewhat, but it remains a good economical choice for large spaces. We assess conditions on the first visit and suggest the best option.
Does salt air from the sea corrode the metal duct?
Yes, salt can affect ordinary metals. We use high-grade galvanised duct or corrosion-resistant materials, and apply extra protective coatings in coastal areas.
My villa is spread out with many rooms, how do you distribute cool air evenly?
We create a distribution plan accounting for room size and distance from the unit. We use balanced openings and airflow control dampers on each duct branch.
Very high ceilings mean long duct runs, is duct installation secure?
Yes, we use heavy-duty metal brackets and rated fixtures to hang the duct securely. Every support bears the duct, air and water weight with a high safety margin.
