Design before you buy
HVAC design in Al Lulu
HVAC design in Al Lulu calculates heat load per room before investing in equipment. Alrabih maps ductwork and outdoor placement to suit Al Lulu's modern spacious villas, avoiding wall damage, poor finishing and wasted energy.
- 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 Lulu is known for new villas with modern architecture, spacious interiors and large roof areas, requiring an advanced AC system that matches the villa's refined finish. Choosing the right system from the start preserves interior décor and walls and delivers high energy efficiency through the long, hot summer months.
Al Lulu is in north Jeddah, a district of modern spacious villas with separate layouts and high-quality finishes.
Most Al Lulu villas need a multi-head split or central ducted system because of the spacious interiors and desire to conceal indoor units.
The AC setup in Al Lulu
- 1
Central ducted system with hidden runs
Modern Al Lulu villas often prefer a central ducted system with hidden runs in ceilings or walls to preserve décor.
- 2
Premium multi-head split system
Some villas choose premium multi-head split systems with ultra-slim indoor units that blend with modern décor.
- 3
Smart multi-zone temperature control
Large villas benefit from smart controls that allow temperature adjustment zone by zone based on usage and sun exposure.
Before the visit
Before our visit in Al Lulu
- 1
Provide complete architectural drawings
Send us the full architectural drawings with ceiling heights and any planned suspended ceilings so we can determine the best routing.
- 2
Identify possible outdoor unit locations
Tell us possible outdoor unit locations, whether on the roof or villa side, with details on access and distance from the main entrance.
- 3
Agree on impact to interior finishing
Clarify whether you can accommodate duct runs through walls and ceilings or prefer a solution with minimal impact on your finishes.
More districts for HVAC design
Other services in Al Lulu
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.
Can the indoor units be concealed in the suspended ceiling?
Yes, in Al Lulu's modern villas we can install ducted indoor units fully concealed in suspended ceilings, though this needs precise design before construction or final finishing begins.
How many outdoor units does a large villa in Al Lulu need?
That depends on villa size and room layout. We calculate total heat load and determine whether you need one powerful outdoor unit or several smaller ones, both approaches are viable.
Are there weak spots in cold distribution in large villas?
Yes, rooms far from the outdoor unit may receive weaker cooling if ductwork is not precisely calculated. We size ducts and dampers so cold air reaches all areas evenly.
Does good design actually save on electricity bills?
Very much so. A properly designed system runs more efficiently and does not waste energy on oversized units or poorly routed ductwork.
