Design before you buy
HVAC design in Kilo 14
In Kilo 14, south Jeddah, designing the AC system before buying equipment prevents undersized or oversized units and uneven cooling across rooms. We calculate heat load for each space and choose the right system before you spend anything.
- 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
Request this serviceDuct installation
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Request this serviceDuct fabrication
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Request this serviceAC repair & faults
Request this serviceAC cleaning
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Request this serviceAC removal & refitting
Request this serviceDuct cleaning & sanitising
Request this serviceAC servicing by brand
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Request this serviceAHU maintenance
Request this serviceFridge & freezer service
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Request this serviceMosque HVAC
Request this serviceMall & retail HVAC
Request this serviceRestaurant & cafe HVAC
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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
Kilo 14 is a modern residential area of spacious villas on large plots exposed to intense sun throughout the day. The wide spacing between villas and open grounds mean central or distributed AC systems work best, but their design needs precision in calculating each room's heat load because sun exposure and insulation vary between different parts of the villa.
Kilo 14 sits in south Jeddah, a modern villa district with regular layout and large plots.
Most villas here are designed for central or distributed AC systems because of the large spaces and need for uniform cooling.
The AC setup in Kilo 14
- 1
Central AC system for spacious villas
Large villas in Kilo 14 benefit from a unified central system that delivers even, efficient cooling across all floors and wings.
- 2
Distributed system with multiple outdoor units
Some villas need multiple outdoor units to split the thermal load, especially if the garden space allows installation with sufficient spacing.
- 3
VRF system for independent zone control
Premium villas may use VRF systems that allow different temperatures for each villa section based on use and preference.
Before the visit
Before our visit in Kilo 14
- 1
Provide the villa layout or aerial photo
Send us the villa's architectural drawings or a satellite image so we understand solar orientation and distances before our visit.
- 2
Identify potential outdoor unit locations
Ensure there is adequate space on the roof or outer wall for units, and tell us about any architectural or landscaping constraints.
- 3
Check electrical circuits and drainage points
Confirm a nearby electrical panel and suitable drainage point for the outdoor units before our assessment visit.
More districts for HVAC design
Other services in Kilo 14
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 Kilo 14 villa with such strong sun exposure?
We study each wall and window by its solar orientation and thermal insulation, account for peak summer hours and local humidity, then size the units based on those figures.
My villa has a very large footprint, is central AC enough?
It depends on the number of rooms and distance from the main unit to air outlets. We draw air distribution layouts before purchase to ensure cooling reaches every zone evenly.
Does humidity and dust in south Jeddah affect which system we should choose?
Yes, relative humidity and dust increase evaporative and filtration load. We factor this into heat calculations and recommend filters and capacities suited to the local environment.
How do we choose the wire gauge for the outdoor units?
We calculate the electrical current for each unit based on its capacity, then recommend wire gauge and electrical fittings matched to the distance from the outdoor unit to the main panel.
