Desert cooler, proper duct
Evaporative (desert) duct installation in Al Rabwah
In Al Rabwah, central Jeddah, evaporative duct installation suits villas and homes with open gardens and accessible roofs. Alrabih's team mounts the evaporative cooler on the roof and runs galvanised ductwork to the rooms to be cooled, with distributed exhaust openings.
- 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 Rabwah is a modern residential district characterised by detached villas with open gardens around each home, and roofs that are high and readily accessible for installation. This building pattern is ideal for evaporative cooling because the indoor spaces are large and the roofs offer a safe location for the cooler, and the exhaust air can be directed easily into gardens or open areas between homes. The gardens and green spaces help disperse the humid air without negative effects on neighbouring properties.
Al Rabwah sits in central Jeddah, comprising detached villas with spacious gardens and high roofs suited for cooler installation.
Most Al Rabwah villas need medium-capacity evaporative coolers to cover living and bedroom areas, with exhaust directed towards side gardens.
The AC setup in Al Rabwah
- 1
Medium-capacity cooler mounted on the roof
Villas in Al Rabwah typically need one roof-mounted cooler covering the main living areas.
- 2
Galvanised ductwork distributed to main rooms
The ductwork extends from the roof to the main living and bedroom, with distributed and safe exhaust openings.
- 3
Exhaust outlets directed towards the side garden
Air outlets are directed away from the villa's front entrance, towards the side or rear gardens.
Before the visit
Before our visit in Al Rabwah
- 1
Confirm roof access is available
Let us know if the roof is safe and easily accessible, and whether there are fixed ladders or a small staircase.
- 2
Identify the areas to be cooled precisely
A list of the rooms and areas you want cooled will help us determine the cooler size and ductwork needed.
- 3
Coordinate with your villa's contractor or plumber if applicable
If there are ongoing renovations or repairs, let us know so we can schedule installation without clashing with other work.
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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 evaporative duct cooling suit a modern villa in Al Rabwah?
Yes, Al Rabwah villas have high roofs and spacious interiors, making evaporative cooling a practical option. We conduct a site survey to confirm the system's suitability.
How do you run the galvanised duct across the roof without water leaks?
We carefully open the roof, secure the duct on a solid base, and seal all openings with waterproofing and dust-resistant materials to protect the building from water and dust.
Does the humid air from the evaporative cooler harm the garden or neighbours?
The humid air disperses into the garden and open spaces around the villa, and the distance between homes prevents any negative effect on neighbours.
Does my villa's roof need structural reinforcement before cooler installation?
This depends on the roof's current condition and strength. We inspect it during the initial visit and advise on any reinforcement needed before we start.
