Design before you buy
HVAC design in Al Wafa
In Al Wafa, east Jeddah, AC design for homes and residential buildings requires understanding the site's unique geographical features. Alrabih calculates heat load accounting for location, elevation and wind exposure before selecting equipment.
- 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 Wafa is a mixed-development district of older and newer villas and low-density residential towers. The area sits at a slightly higher elevation in the eastern highlands, exposed to stronger seasonal winds than coastal neighbourhoods, affecting heat distribution around buildings. Older structures may need special study because insulation can be poor, while newer buildings benefit from better insulation but need precise calculation as internal thermal mass is lighter. Proper design accounts for all these factors.
Al Wafa is an east Jeddah district of mixed development with villas and low-density complexes in a relatively elevated area with stronger seasonal winds.
Most buildings in Al Wafa use separate splits or basic central systems, but system design must account for wind effects and elevation on heat load.
The AC setup in Al Wafa
- 1
Separate splits accounting for elevation and wind
Separate systems in Al Wafa need precise calculation for wind and elevation effects on cold-air distribution.
- 2
Simple central system for small villas
Small villas may benefit from a single central system, but design must factor wind effects on air routes.
- 3
Outdoor units secured against wind exposure
Strong winds require robust mounting of outdoor units with additional bracing, affecting installation location choice.
Before the visit
Before our visit in Al Wafa
- 1
Assess building insulation quality
Provide information on building age and wall and window condition, as poor insulation affects heat-load calculation.
- 2
Identify a secure outdoor unit location
Choose a location sheltered from direct wind if possible, or prepare additional bracing for secure mounting.
- 3
Collect building orientation and specs
Tell us the building's main orientation and large window locations so we can calculate sun and wind effects.
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.
The area is elevated with strong winds, does that reduce AC requirements?
Winds help with natural cooling somewhat, but elevation and wind exposure affect heat distribution across walls. A properly designed system accounts for this.
My older villa lacks good insulation, how does that affect AC design?
Poor insulation significantly raises heat load, so you may need a higher-capacity unit than a newer villa of the same size. We assess this during the site visit.
Can a well-designed AC system help reduce electricity bills in this windy district?
Yes, a system designed for actual heat load and site conditions selects right-sized units, avoiding excess energy consumption.
Do dust and wind conditions require special filters for the AC?
Dust and wind increase the need for regular filter cleaning, but filter type depends on system type, not design. We discuss this as part of maintenance.
