Desert cooler, proper duct
Evaporative (desert) duct installation in Al Mawaddah
In Al Mawaddah, east Jeddah, evaporative duct installation serves large residential buildings, commercial centres and warehouses. The system distributes uniform cool air through metal ducts without high power costs.
- 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.
Split AC installation
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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 Mawaddah is a mixed east-side residential and commercial zone with medium to large buildings, and the dry, hot weather makes evaporative cooling a strong economic choice. Most buildings have medium to high ceilings that allow straightforward ductwork, and the vast spaces in some warehouses and commercial centres benefit greatly from even air distribution. Regular maintenance is essential as dust accumulates quickly.
Al Mawaddah sits in east Jeddah, a mixed residential and commercial zone of medium to large buildings.
Most residential and commercial buildings in Al Mawaddah have concrete or metal ceilings of medium height that readily support metal ductwork installation.
The AC setup in Al Mawaddah
- 1
Roof cooler with distributed metal ductwork
The cooler sits on the ceiling, with wide metal ducts distributing cool air to different building sections.
- 2
Efficiently distributed air outlets
Outlet openings are positioned in ceilings and walls in a logical pattern that reaches all residential units or commercial spaces.
- 3
Safe water drainage from the roof
A drain line from the cooler leads to a safe external outlet, with strong roof waterproofing protection.
Before the visit
Before our visit in Al Mawaddah
- 1
Ensure team access to the roof
Check that safe ladders and passages are available, and that the roof is secure and strong enough for the team and equipment.
- 2
Locate water, drainage and power sources
Tell us where the nearest tap, safe external drain and electrical panel are, as the system needs all three.
- 3
Coordinate with building management if needed
For a large residential or commercial building, contact building management to coordinate timing and approval for installation.
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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.
Is evaporative cooling right for a large residential building in Al Mawaddah?
It depends on the building size, number of units and relative humidity. We visit, assess the design and ceilings to determine whether the system can efficiently serve all residential units.
For the large warehouses in Al Mawaddah, will evaporative cooling cover the whole space?
Evaporative cooling distributes air effectively over large spaces if ductwork and outlets are strategically positioned. We calculate the area and required capacity and size the system for your needs.
Do heat and dust together affect cooler efficiency?
Yes, high heat and desert dust gradually reduce performance. We install premium-grade filters and recommend monthly inspection and cleaning during peak heat.
My warehouse water line is old, will it affect the evaporative system?
An old water line may not provide adequate pressure for the cooler. We inspect it to see if it is suitable, or whether a new separate water line is needed.
