Desert cooler, proper duct
Evaporative (desert) duct installation in Al Waziriyah
In Al Waziriyah, south Jeddah, evaporative duct installation serves large commercial shops, warehouses and cavernous halls that need energy-efficient cooling. We safely open the roof, run galvanised duct across the space, and the survey confirms whether evaporative cooling suits your location.
- 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 Waziriyah is a varied residential and commercial district with flats and villas alongside large shops, warehouses and event halls with high ceilings. Growing commercial activity in the district has made low-cost cooling for large spaces essential, and evaporative duct cooling suits these buildings, but a preliminary survey is necessary to check the gaps between residential and commercial structures and ensure exhaust openings do not disturb nearby residents.
Al Waziriyah lies in south Jeddah, a mixed area of residential buildings, shops and large halls.
Shops and halls in Al Waziriyah typically need medium to large duct (400 mm or more) depending on the floor area.
The AC setup in Al Waziriyah
- 1
Medium duct for assembly halls
Event halls and assembly spaces in Al Waziriyah need 400, 500 mm duct distributed over multiple openings for balanced cooling.
- 2
Short duct runs for large shops with tall ceilings
Large, tall shops here do not need long duct runs, cool air descends directly from the ceiling.
- 3
Duct insulation in sun-exposed areas
Sun-exposed roofs in Al Waziriyah need extra duct insulation to minimise cooling loss.
Before the visit
Before our visit in Al Waziriyah
- 1
Clear the ceiling area of goods
Make sure the ceiling space is clear of stacked goods or other equipment before the visit.
- 2
Identify existing electrical runs
Tell us where existing wiring and cables run along the ceiling so we avoid crossing them.
- 3
Agree on exhaust opening locations
Decide with our team the best locations for exhaust openings (external wall or roof) and ensure future maintenance access is easy.
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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.
Would evaporative duct cooling suit my commercial shop?
Evaporative duct cooling suits spacious shops with high ceilings in Al Waziriyah, especially if the space is open and does not need separate cold zones.
There are residents next to my shop, will exhaust openings bother them?
We carefully position exhaust openings away from residential windows and balconies, and the survey ensures warm air is not directed at residential units.
Humidity in south Jeddah can be high, does evaporative cooling work in summer?
Evaporative cooling efficiency depends on outdoor air humidity. Our survey identifies days when it runs very efficiently and periods when supplementary AC might be needed.
How do I ensure the duct distributes cooling evenly across my large shop?
We design the number and location of exhaust openings based on your shop's shape and size, and the survey identifies areas needing more openings to balance cooling.
