Design before you buy
HVAC design in Al Tha'alibah
In Al Tha'alibah, south Jeddah, HVAC design balances the needs of dense commercial buildings and residential flats. We calculate heat load for each use type and select a system that serves both shops and homes.
- 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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Request this serviceAHU maintenance
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Request this serviceRestaurant & cafe HVAC
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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 Tha'alibah is a strongly mixed area with small shops and markets on ground floors and residential flats above, a busy commercial neighbourhood with high retail activity. Buildings are medium-rise and closely spaced, and upper flats sometimes suffer cumulative heat from shop activity below. Design needs precise balance between shops' need for quick, intense cooling and residents' need for sustained comfort, and may require separate systems or smart load balancing.
Al Tha'alibah lies in south Jeddah, a mixed commercial and residential area with shops and markets on lower floors and multi-storey residential flats above.
Most buildings in Al Tha'alibah have mixed uses, commercial below and residential above, requiring either separate systems or load balancing across zones.
The AC setup in Al Tha'alibah
- 1
Two separate systems: commercial and residential
Mixed-use buildings often need one system for shops and another for residential flats to avoid conflicting cooling demands.
- 2
Central system with separate zones and load balancing
If one system is necessary, it is divided into separate zones with a smart bypass valve balancing load between shops and flats.
- 3
Outdoor units on roof and facades
Limited space between buildings makes roofs and upper facades the preferred locations for outdoor units.
Before the visit
Before our visit in Al Tha'alibah
- 1
Provide complete plans of commercial and residential areas
We need clear plans showing shop and flat distribution, door and window locations in each area.
- 2
Coordinate with shop owner and flat owners
Agree with all parties on design plan, maintenance and shared regulations before the visit.
- 3
Establish separation between shop and flat access
Ensure the systems or zones can be separated, or at least install doors or valves to control airflow between them.
More districts for HVAC design
Other services in Al Tha'alibah
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.
My flat is above a shop, why do I feel extra heat at midday?
Heat from commercial activity below and the separating floor transmits some to your flat. In design we factor this extra load and select a higher-capacity unit or design a separate cooling zone for your flat.
The shop below me opens its door often, does that affect my flat's cooling?
Cold air loss from frequent shop door openings reduces overall efficiency. In design we either create a separate system for the flat or balance air distribution so the flat gets its share of cooling.
Can one central system handle both commercial and residential uses together?
It can, but requires advanced design with separate zones and a smart thermostat balancing each area's needs. We often recommend two separate systems to avoid conflicting demands.
Open roofs on the flats increase heat, how do you account for this?
We calculate direct sun exposure on roofs and external walls in the heat-load formula and select units with capacity matching this high load.
