Desert cooler, proper duct
Evaporative (desert) duct installation in Al Rabiyah
Evaporative duct installation in Al Rabiyah suits the large, open spaces typical of southern Jeddah. The distributed desert cooling system, fed through sized duct runs, delivers efficient air circulation to warehouses, factories and spacious villas.
- 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 Rabiyah is a residential and industrial district known for its open layouts and wide plots, housing large villas, warehouses and production facilities, with most building roofs exposed and spacious enough for installation. Because the area favours modern, horizontal designs over the central districts, running desert duct from roof to interior spaces is simpler and more cost-effective here, though a site survey to confirm the climate fit is essential, since air intake and exhaust placement are critical.
Al Rabiyah lies in southern Jeddah, a district of large-footprint industrial and residential buildings with modern horizontal designs.
Most villas and warehouses in Al Rabiyah have flat, spacious roofs, making it straightforward to mount the evaporative unit and run duct across dozens of metres.
The AC setup in Al Rabiyah
- 1
Evaporative unit on flat roof
Most Al Rabiyah roofs are flat and wide, allowing straightforward and secure mounting of the evaporative unit.
- 2
Long galvanised metal duct runs
Galvanised duct extends from roof through interior spaces and balconies, withstanding desert heat and dust effectively.
- 3
Exhaust openings in outer walls
Warm exhaust air exits through openings in the outer walls or balconies, maintaining continuous air circulation.
Before the visit
Before our visit in Al Rabiyah
- 1
Show us the roof and existing utilities
Ensure the roof is safe to walk on and let us know about any electrical wires or water pipes already there.
- 2
Point out the spaces to be cooled
Point out the rooms or areas you want cooled, whether warehouses, workshops or interior villa spaces.
- 3
Confirm outlet locations are accessible
Decide where the exhaust openings will go in the outer walls and ensure these spots won't trouble neighbours or block access.
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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 work for small factories in Al Rabiyah?
Yes, provided the factory is open-plan and has adequate natural exhaust. We always visit first to confirm humidity and dust levels won't hamper performance.
Al Rabiyah gets strong summer winds, do they affect the exhaust openings?
Strong winds can affect exhaust efficiency. We choose the opening locations during our site visit to ensure balanced air flow despite the wind patterns.
My villa roof has thermal insulation, do you install duct over it?
We inspect the insulation and roof structure during the visit. If present, we secure the unit and duct safely and seal everything against rain and dust.
How much duct does a large warehouse need?
Duct size and length depend on the warehouse dimensions and the area to be cooled. We determine that during our site visit and include it in the quote.
