Design before you buy
HVAC design in Al Atheer
Al Atheer in south Jeddah is growing with modern villas on spacious plots, each with varied architecture and generous glazing. HVAC design here starts by calculating the heat load for each room based on its size, window count and sun-facing area before any equipment is purchased.
- 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
Al Atheer's buildings are new and spread across open plots, allowing more flexible placement of units and ductwork than congested areas. However, heavy glazing and open architectural layouts increase heat load, so poor design leads to oversized units, high energy bills or uneven cooling room to room. Precise heat-load calculation for each space accounting for glazing type and sun exposure ensures balanced cooling and reasonable running costs.
Al Atheer lies in south Jeddah, a growing district of modern villas on large plots with varied architectural designs.
Most villas here need a central ducted air system distributed across multiple rooms, with one or more outdoor units depending on the total load.
The AC setup in Al Atheer
- 1
Distributed central air system
Modern Al Atheer villas need ducting that covers bedrooms, living areas and kitchens, with one or more units scaled to the plot size.
- 2
Outdoor unit on roof or garden
Spacious plots and flat roofs allow the outdoor unit to be positioned well away from windows and terraces.
- 3
Central or multi-zone thermostat system
Larger Al Atheer villas benefit from multi-zone controls to balance temperatures across different floors and wings.
Before the visit
Before our visit in Al Atheer
- 1
Provide the villa's architectural plan
Bring the architectural drawings or a clear photo of the floor plan showing room sizes and window positions before the visit.
- 2
Mark main window faces and sun direction
Point out which sides get the most sun and where the large windows are, so we calculate load accurately.
- 3
Confirm roof and outdoor access
Ensure the roof and garden are safely accessible for placing the outdoor unit and running duct pathways through the ceiling.
More districts for HVAC design
Other services in Al Atheer
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 calculate heat load for a villa with heavy glazing?
We measure each window's area, orientation to the sun and glass thickness, then add occupancy and appliance load, giving us the precise total heat load to select the right unit size.
Al Atheer's villas are spread out on large plots, how does that affect the design?
The spacious plots let us place the outdoor unit away from bedrooms and run ducts without crowding, giving us even distribution and quieter cooling.
Strong sun exposure on one side of the villa, does that change the design?
Yes, sun-facing sides need higher cooling capacity, so we position the indoor units to cover those zones more efficiently before construction starts.
My villa's electrical panel is older, can it handle a new HVAC system?
We inspect your electrical panel and wiring before design and confirm whether a dedicated new circuit is needed for the HVAC system.
