Desert cooler, proper duct
Evaporative (desert) duct installation in Al Samer
In Al Samer, east Jeddah, evaporative duct installation suits mid-sized shops, storage units and nurseries. The team mounts the cooler on the roof and runs galvanised duct across the space with exhaust openings calculated for the local environment.
- 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 Samer is a mixed commercial and agricultural zone with buildings of varied sizes from auto-parts shops and nurseries to distribution warehouses, most with lightweight metal or concrete roofs. The roofs are easy to access and interiors are mid-sized, making evaporative duct a cost-effective choice between central cooling and separate units. Site survey is important because relative humidity varies with proximity to the coast, affecting evaporative cooling efficiency.
Al Samer is an eastern zone of Jeddah housing commercial shops, nurseries and distribution facilities in varied sizes with lightweight roofs.
Evaporative duct runs in Al Samer require careful humidity measurement and exhaust openings positioned to avoid disrupting commercial operations or stored plants.
The AC setup in Al Samer
- 1
Roof-mounted cooler with moderate duct span
The cooler mounts on the roof and the galvanised duct extends at a moderate span across the shop or warehouse, suiting the mid-sized spaces common in Al Samer.
- 2
Exhaust openings positioned away from stock or equipment
Exhaust openings are placed on the yard or passage side so warm air does not blow directly on goods, plants or sensitive equipment.
- 3
System with dust and sand filters
The duct and openings feature filters to block the dust and sand common to the area, cleaned regularly to maintain clear airflow.
Before the visit
Before our visit in Al Samer
- 1
Check roof strength and supports
Before the visit, confirm the shop or warehouse roof is strong enough for the cooler and duct, or let us know if you are unsure.
- 2
Mark exhaust opening location away from stock
If you have sensitive stock or equipment, identify the best area for exhaust openings away from it.
- 3
Inform us of any roof obstructions
Tell us about any water tanks, pipes or equipment on the roof so we can route the duct around them efficiently.
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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 work well in Al Samer with coastal humidity?
The site survey measures relative humidity in Al Samer, as it varies with coastal proximity. Evaporative duct works best in lower-humidity areas, and we will advise you before installation whether it suits your location.
I run a plant shop, will exhaust openings damage the stock?
The team positions exhaust openings so the warm air does not blow directly on plants but is directed toward the yard or side passage away from the stock.
The roofs here are lightweight metal, will they support the cooler and duct?
The site survey inspects roof strength and supports. If needed, we install additional bracing before mounting the cooler and duct.
Dust and sand in the area, will they clog the duct and openings?
Installation includes fitting filters and screens on openings to block dust ingress, and routine maintenance cleans the screens to maintain airflow.
