Design before you buy
HVAC design in Al Naseem
In Al Naseem, central Jeddah, spacious villas and modern buildings demand intelligent AC design before equipment investment. We calculate the heat load for each room based on area, glazing, occupants and sun exposure, then select the ideal system and draw the plans.
- 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 Naseem is a relatively developed district with spacious villas, modern residential buildings and available green space. Most owners plan AC from the outset, and advance design ensures even distribution throughout and reduces heat loss and wasted energy. Large villas need precise calculations for sun-facing areas and glass surfaces, and apartment blocks need coordination between adjacent units to prevent interference and cross-effects.
Al Naseem lies in central Jeddah, a district of spacious villas, modern residential buildings with green areas and wide spaces between structures.
Most modern villas and buildings in Al Naseem use central AC systems with zoning, allowing independent control for each building section.
The AC setup in Al Naseem
- 1
Single central system with multi-zone division
Most spacious villas in Al Naseem use one cooling unit with ductwork divided into independent zones for precise control.
- 2
Separate units per floor in apartment buildings
Buildings in Al Naseem typically have a separate central cooling unit per floor or cluster of flats, with individual duct networks.
- 3
Insulated ducts with smart control points
Each room cluster or zone has a temperature sensor and smart control valve that adjusts cool air flow on demand.
Before the visit
Before our visit in Al Naseem
- 1
Provide complete architectural plans with dimensions
Send complete clear drawings with precise dimensions for each room, halls, ceilings, windows, doors and free spaces.
- 2
Specify expected usage and occupancy patterns
State the number of occupants, constantly occupied rooms, seasonal variation and peak times so we calculate load with high precision.
- 3
Tell us priorities, budget and smart options
Specify which rooms are priority, your available budget and whether you want smart energy-saving units so we recommend the best fit.
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.
In design, how do you calculate the sun's effect on my villa's walls?
We account for sun direction, seasons and sun-facing walls. East and west walls gain more heat, so we choose higher cooling capacity for sun-exposed areas.
My lounge has very large windows, does this affect the calculation?
Yes, significantly. Large windows increase heat, light and moisture gain. In design, we increase cooling capacity for that room and may suggest reflective blinds.
Can the design be adjusted later if I change my usage plans?
Yes, we design with flexibility allowing zones to be added or removed without major changes. Main ducts are left with extra capacity for future expansion.
I am interested in a smart system to lower bills, what design details matter?
We choose high-efficiency equipment, route ducts to minimise leaks, place smart sensors in each zone and recommend scheduled maintenance.
