Design before you buy
HVAC design in Industrial City
HVAC design in Industrial City starts by calculating heavy heat loads from factories and warehouses before choosing suitable systems. We draw ducts and layouts to distribute cooling evenly across vast industrial spaces and intensive processes.
- Accurate heat loads
- System selection
- Duct drawings
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
Who needs a considered design?
- 1
Owner planning a new build
Before walls and ceilings are finished you still have the chance to route ducts and place units correctly. Early design prevents costly surprises during fit-out and delivers rooms that cool evenly from the first day of operation.
- 2
Architect or contractor needing drawings
The project needs mechanical drawings to co-ordinate with the structure, electrical and plumbing trades. We produce duct layout drawings, equipment positions and installation heights in a format the site can use directly.
- 3
Existing building with uneven cooling
Some rooms stay hot even with the AC running while others are over-cooled. The cause is usually wrong airflow distribution or uncalculated capacity. A redesign finds the fault and defines what needs changing before any new purchase.
Who it's for
Building a villa and want design before fit-out
We calculate the heat load for every room in the villa and draw duct routes before ceilings are closed, so you avoid breaking the finished work later.
Ask on WhatsAppRunning a commercial building with hot rooms
We review the current airflow distribution and recalculate loads per space, then identify faults in the ducts or equipment and draw the required changes before any purchase.
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What the design covers
- Heat load per room
- Right system type selected
- Equipment from authorised brands
- Duct distribution layout drawings
- Equipment schedule for construction
How we work
How we work
- 1
Gather building data
We ask for the architectural drawings or visit the site to measure spaces and record glazing, orientation and internal loads from people, equipment and kitchens.
- 2
Calculate heat loads
We calculate the heat load for each space separately, accounting for Jeddah's intense sun, high humidity and exposed facades, so every unit is sized on real load not guesswork.
- 3
Select system and equipment
Based on loads and building type we choose between splits, ducted systems, central air and chiller, and specify equipment from Carrier, YORK, General, Midea, Gree and Smart Gold to suit the project.
- 4
Draw and deliver
We draw duct routes, unit positions, diffuser locations and installation heights, and deliver a complete equipment schedule ready for construction or tendering.
Calculated design or buying blind?
| Alrabih | The usual way | |
|---|---|---|
| Unit size | Based on actual load | Guessed or oversized |
| Airflow distribution | Drawing that achieves even flow | Diffusers placed at random |
| Co-ordination | Drawings before fit-out | Costly changes later |
| System type | Suited to building and budget | Whatever the shop suggests |
| Humidity and salt air | Accounted for in equipment choice | Discovered after installation |
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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Request this serviceDuct cleaning & sanitising
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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
Industrial City is packed with heavy factories, warehouses and large workshops carrying very high heat loads from machinery, industrial processes and production. Design here must account for vast, high-ceilinged spaces and intense equipment heat, usually needing powerful central systems or multiple units with heavy-gauge ducts to handle high pressure.
Industrial City sits in south Jeddah, a heavy industrial zone of large factories, warehouses and workshops with high ceilings.
Most heavy factories and workshops use large-scale central systems with heavy-gauge metal ducts because of intense heat loads and high pressure demands.
The AC setup in Industrial City
- 1
Large central system with metal ducts
Most heavy factories use one large central system with thick metal ducts distributed across all zones.
- 2
Distributed ceiling units for thermal balance
Extreme heat zones may need additional ceiling units carefully distributed to achieve consistent thermal balance.
- 3
Separate ventilation for contaminated air
Some factories need a separate ventilation system to extract contaminated air from production zones and exhaust it outside the building.
Before the visit
Before our visit in Industrial City
- 1
Bring factory layout and machinery map
Bring a detailed factory layout showing each machine location, production zones, windows and doors so we can calculate heat loads with high precision.
- 2
Confirm roof and exhaust access
Ensure the roof is safely accessible for mounting outdoor units and exhausts, and that there is enough space for extending ducts.
- 3
Identify main electrical points and utilities
Identify the main electrical panel, backup generators and main water and drain lines to avoid conflicts with ducts and piping.
More districts for HVAC design
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FAQ
Questions about HVAC design
When is a chiller more suitable than split units?
The decision depends on the building area, number of spaces and how it is used. In large commercial and hotel buildings a chiller gives flexible control and simplifies central maintenance. In apartments and smaller villas a split or ducted system usually fits better. The calculated heat load is what determines the right choice for your building.
How does a large glazed facade affect the design?
Large glazing exposed to Jeddah's sun raises the heat load noticeably, especially on west and north-west facades. We calculate solar gain through each facade separately, and this can change the unit type selected for that room or require extra diffusers to handle the higher load.
Can you design for an existing building with no architectural drawings?
Yes. When no drawings exist we visit the site and measure every space ourselves, recording facades, glazing and how each room is used. The survey takes longer than reviewing ready drawings, but the calculations still rest on real measurements rather than estimates, which is what makes the results reliable.
Does the design include diffuser types and dampers?
The drawings specify diffuser types, positions and sizes to match ceiling height and room shape, and show where dampers are needed to balance airflow to each zone. These details matter because a diffuser in the wrong place wastes a large part of the system capacity even when the units are correctly sized.
Does duct design differ between the ground floor and upper floors?
Yes. The top floor typically carries a higher heat load because the roof is directly exposed to the sun, which affects duct sizes and the number of diffusers needed on that level. We design each floor separately based on its own calculated load and show where dampers are needed to balance airflow between floors.
How do you design a system for a factory with heavy machinery and extreme heat?
We measure each machine and its heat output, calculate floor area, ceiling height and ventilation needs, then select a central system with very high cooling capacity and robust ducts.
What is the difference between warehouse ducts and heavy factory ducts?
Heavy factory ducts are thicker and handle higher pressure because heat loads are far greater, and need better insulation to reduce heat loss.
Do I need extra cooling units for specific hot spots in the factory?
Yes, we often place extra units or ceiling-mounted units near extreme heat spots to balance temperatures throughout the factory.
How do we handle ventilation and exhaust in a large factory?
We design a separate ventilation system working alongside cooling, pulling hot and contaminated air from production zones and safely exhausting it outside.
