Design before you buy
HVAC design in Al Nada
In Al Nada, east Jeddah, proper AC system design ensures you do not waste money on units unsuited to your flat or villa size. We calculate each space's heating and humidity needs and choose the right system before any 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
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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
Al Nada is a modern district of detached villas with private gardens and low-rise apartment blocks spread across wide grounds, so AC design here benefits from ample outdoor space and clear roofs. Morning east-facing sun hits the facades strongly, and midday heat reflection off roofs and walls raises the thermal load, so design must account for this when choosing unit capacity and outdoor placement.
Al Nada lies in east Jeddah, a spacious modern residential district mixing detached villas and small apartment blocks with wide gardens.
Most Al Nada villas and flats use split systems because the outdoor space readily accommodates outdoor units, and few apartment blocks need central systems.
The AC setup in Al Nada
- 1
Separate split unit per room or wing
Al Nada villas and flats benefit from separate indoor units per room, connected to one or more outdoor units depending on the layout.
- 2
Outdoor unit on roof or rear wall
Al Nada's spacious outdoor areas offer multiple positioning options for the outdoor unit, making it easy to keep it away from the front facade.
- 3
Visible or concealed copper runs as needed
Piping can be routed openly across roofs or concealed within walls, depending on the building design and preference.
Before the visit
Before our visit in Al Nada
- 1
Prepare the villa or flat floor plan
The plan helps us quickly understand the layout, rooms and windows, so have it ready or photograph it before we visit.
- 2
Mark possible outdoor unit locations
Identify spots on the roof or rear walls with no obstruction and away from neighbours' windows.
- 3
Note sun exposure and wind direction
Tell us which facades get the most sun and whether there are notable winds that affect the building.
More districts for HVAC design
Other services in Al Nada
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.
Morning sun hits my flat from the east, do I need a stronger AC unit?
Yes, morning east sun raises the heat load noticeably, so we account for window size and direction when sizing the unit.
Does the outdoor unit location on my roof affect performance and efficiency?
Yes, the outdoor unit must be away from heat reflection off the roof and walls, and in a spot with good airflow around it.
My villa is large with several rooms, how many indoor units do I need?
We calculate each room's area, sun exposure and expected occupancy, then determine the right number and capacity for even cooling throughout.
Does humidity in Al Nada affect the system choice?
Relative humidity affects the unit's ability to remove moisture from the air, so we factor it into cooling load calculation when sizing the outdoor unit.
