Design before you buy
HVAC design in Ghulail
HVAC design in Ghulail accounts for high building density and closely spaced medium villas. We calculate heat load and each zone's influence from neighbouring buildings before selecting the system type.
- 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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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
Ghulail is a southern district of medium-sized villas close together on smaller plots than other south-area neighbourhoods, reducing natural airflow between buildings. This means outdoor units work in a tighter environment, and heat load is affected by neighbouring proximity. Sound design accounts for this density and chooses a system suited to medium spaces.
Ghulail sits in south Jeddah, a district of medium-sized villas close together on smaller plots.
Most Ghulail villas range from 300 to 500 square metres and need balanced AC systems between splits and small central options.
The AC setup in Ghulail
- 1
Small central system with limited ductwork
Medium Ghulail villas suit small central systems with concise ductwork, delivering even distribution without complexity.
- 2
Split units distributed per floor
Multi-storey Ghulail villas may need separate split units per floor level for independent control.
- 3
Single powerful split for smaller villas
Smaller villas or those with very open layouts may suffice with one powerful split unit if rooms are close together.
Before the visit
Before our visit in Ghulail
- 1
Bring the villa layout with full dimensions
An accurate layout with length, width, height of each room and windows helps us calculate heat load correctly.
- 2
Check access to roof or exterior walls
Verify the roof is safe and accessible, and exterior walls are available for outdoor unit mounting if needed.
- 3
Identify villa direction and main windows
Tell us the villa's direction and where large windows and direct sun exposure are, especially on west and south sides.
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.
My villa is medium-sized, is a split or small central system better?
It depends on villa layout and room count. Medium-sized Ghulail villas often benefit from a small central system with concealed ducts, or multiple splits if the layout is open.
Plots are small here, where should I place the outdoor unit?
Available space is limited, but the design identifies the best spot on roof or side wall. We may suggest smaller units or multiple units distributed across available space.
Neighbouring buildings are very close, do they affect the AC system?
Yes, building proximity reduces natural airflow around the outdoor unit. Design accounts for this and may recommend units of suitable capacity with a location allowing better ventilation.
Do I need roof inspection before design?
Yes, especially if the roof will bear the outdoor unit. We check roof strength, available space and airflow around the chosen location.
