Desert cooler, proper duct
Evaporative (desert) duct installation in Quba
In Quba, east Jeddah, evaporative duct installation suits modern villas and apartment blocks with exposed roofs and spacious interiors. The cooler anchors to the roof and the galvanised duct spans zones to distribute cooled air efficiently.
- 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”
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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
Quba is a relatively modern residential area of spacious villas and apartment blocks with high, safe roofs, and large, open interiors supporting efficient cooled air distribution through duct. Its eastern location means greater sun and heat exposure in the morning, but this does not affect system installation so much as increase its usage demand. Before starting installation, verifying the roof's structural integrity is essential, and coordinating with the owner or compound manager to determine the optimal cooler position and duct routing through interior spaces is necessary.
Quba sits in north-east Jeddah, a modern residential area of villas and apartment blocks with high roofs and greater sun exposure.
Most villas and apartment blocks in Quba have straight, stable roofs supporting cooler installation, and their open interior designs allow efficient duct distribution across various spaces.
The AC setup in Quba
- 1
Roof-mounted cooler with duct distributed across floors
The cooler anchors to the villa or building roof and the duct branches to deliver cooled air to each floor and zone.
- 2
Varied exhaust outlets on walls and balconies
Exhaust openings are distributed on exterior walls and balconies to balance exhausted air flow away from neighbouring buildings.
- 3
Safe water drainage system away from foundation
Excess water is drained through pipes directed away from the foundation to a safe outlet in the courtyard or public drainage system.
Before the visit
Before our visit in Quba
- 1
Ensure safe access to the roof
Check that the roof door opens and the staircase is safe, and let us know if any obstacle makes roof access difficult.
- 2
Identify power and water supply locations on the roof
The cooler needs a safe electrical breaker and water line. Identify the location of these connections on the roof or nearest point before the visit.
- 3
Provide information on neighbouring buildings and obstructions
Tell us about nearby buildings and roof obstructions, as this helps us position exhaust and drainage outlets without affecting neighbours.
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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.
Quba has greater sun exposure, does this affect the cooler's efficiency?
Greater sun exposure does not directly affect cooler performance, but it increases system demand due to higher temperatures. Cooler efficiency depends mainly on relative humidity, not direct sunlight.
My roof is slightly sloped, does that affect cooler and duct installation?
A slightly sloped roof is not a problem. We select an appropriate spot to anchor the cooler securely, and drain excess water safely away from the building foundation.
Air in Quba seems dry sometimes, will that affect the duct cooler's performance?
Dry air reduces the cooler's efficiency, but the system remains effective most of the time. We assess local humidity during the visit and suggest any necessary improvements.
Nearby buildings block airflow, does that affect ventilation and drainage?
Nearby buildings may affect exhausted air circulation from the cooler. We carefully position exhaust and drainage outlets to ensure safe air and water flow away from neighbouring buildings.
