Design before you buy
HVAC design in Al Wurud
HVAC design in Al Wurud calculates the heat load for each space based on its furnishing, windows and daily occupancy. Alrabih's team selects the optimal system and draws all details before equipment purchase.
- 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
Request this serviceDuct installation
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Request this serviceDuct fabrication
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Request this serviceAC repair & faults
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Request this serviceAC removal & refitting
Request this serviceDuct cleaning & sanitising
Request this serviceAC servicing by brand
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Request this serviceAHU maintenance
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Request this serviceMosque HVAC
Request this serviceMall & retail HVAC
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 Wurud blends residential villas and modern mid-rise apartments with some shops and clinics on lower floors. This diversity means each building needs its own design; villas differ from flats. Summer heat and humidity require precise capacity calculations to avoid undersized or oversized units.
Al Wurud lies in central Jeddah, a mixed district of villas and modern mid-rise apartments.
Villas need multi-split or central systems, while flats and clinics usually use single or dual-head split per unit.
The AC setup in Al Wurud
- 1
Multi-split for residential villas
Villas in Al Wurud typically need one outdoor unit with indoor units in bedrooms, living room and kitchen.
- 2
Single or dual-head split for flats and clinics
Flats and clinics on upper floors use one or two units to cool the main space.
- 3
Central system with ducts for larger villas
Larger villas may benefit from a central system distributing cool air through hidden ducts for uniform coverage.
Before the visit
Before our visit in Al Wurud
- 1
Bring the building plan or measure rooms
An accurate plan for villa or flat speeds up the load study. If you lack a plan, measure main rooms in metres.
- 2
Show the building's orientation and main windows
Tell us which direction the large windows and exposed roofs face so we can accurately calculate direct sun impact.
- 3
Ensure team access to site, roof or garden
Verify that entrance, roof or side garden are easily accessible for studying outdoor unit placement.
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.
What is the difference in designing a villa versus a flat in Al Wurud?
Villas have gardens and exposed roofs so need higher heat load calculations, while flats are surrounded by other units so lose less heat. Design differs completely based on structure and sun exposure.
Does a flat building with a clinic below need separate designs?
Yes, clinics may need different cooling than residential flats because of visitor numbers, equipment and furnishings. We study each unit separately.
How does coastal humidity affect the AC design?
Humidity increases the heat load, so we select units with slightly higher capacity and focus on proper condensate drainage to prevent mould.
Are ducts more economical than multi-split systems?
It depends on space and budget. Multi-split is cheaper for small flats, while central systems suit large villas better. Our design shows the best option.
