Installation of multi-split air conditioning systems in Kazakhstan

Multisplit system is an engineering air conditioning solution built on the “one outdoor unit, several indoor units” architecture. The design includes one compressor station (outdoor unit) that controls 2-8 indoor units, providing cooling and heating for large commercial premises, office buildings, shopping centers and industrial facilities of any size.

Unlike household split systems, a multi-split air conditioning system is designed for large-scale facilities with multiple climate control zones. Each indoor unit operates independently, allowing you to regulate the temperature in individual rooms without affecting neighboring areas.

What is multisplit and how does it work?

The multisplit air conditioning system consists of the following key components:

• Outdoor unit (compressor station)– the heart of the system, contains a compressor, condenser and expansion devices. It converts freon and distributes cooled or heated coolant through pipelines to the indoor units.
• Indoor units— installed in separate rooms and connected to the outdoor unit with copper pipelines. Each unit has its own thermostat and can operate independently.
• Freon lines— copper tubes through which the refrigerant circulates between the outdoor and indoor units.
• Electrical cables and control systems— provide power and synchronization of the operation of all components.
• Drainage systems— condensate is removed from the indoor units.

Operating principle: the outdoor unit compresses freon, turning it into a high-pressure liquid. This liquid enters the indoor units, where it expands and absorbs heat from the room (in cooling mode) or releases heat (in heating mode). The process is cyclical and continuous, providing a stable climate throughout the day.

For which objects is multisplit suitable?

The multi-split air conditioning system is optimal for the following types of commercial and industrial facilities:

• Administrative buildings— offices with several rooms, conference rooms, reception areas, requiring independent climate control in each zone.
• Shopping centers— trading floors, shops, cafes, where it is necessary to maintain a comfortable temperature in different sections.
• Commercial premises— beauty salons, medical offices, office centers where precise microclimate control is required.
• Industrial facilities— small production workshops, warehouses, server rooms where cooling is critical for equipment.
• Warehouses and logistics centers— premises for storing goods that require uniform air conditioning.

The system is suitable for objectsany scale and can cover rooms with ceiling heights of up to 3–4 meters. If a facility requires more than 8 indoor units, it is recommended to consider a VRF (variable refrigerant flow) system that scales to 30+ units.

Types of indoor units of a multi-split system

The choice of the type of indoor unit depends on the architecture of the room and aesthetic requirements:

Designing an air conditioning system includes calculating the required power, choosing the optimal number and types of indoor units, determining where to install the outdoor unit and laying pipelines. The wrong choice can lead to inefficiency and waste of energy.

Advantages of a multi-split air conditioning system

• Independent temperature control— each indoor unit has its own thermostat, which allows you to optimize the climate in each room separately.
• Energy Saving— the system operates only in those areas where cooling or heating is required, which reduces energy consumption.
• Compactness of the outdoor unit— one outdoor unit takes up less space than several separate split systems.
• Reliability and durability— multi-split systems from trusted global manufacturers last 10–15 years with proper maintenance.
• Easy to expand— if necessary, you can add additional indoor units (up to 8 per outdoor unit).

ABL Engineering Group has many years of experience in installing and servicing multi-split air conditioning systems at 40+ industrial and commercial facilities throughout Kazakhstan. Our own installation teams carry out work in compliance with all technical standards, including laying hidden routes, electrical installation, freon connection and drainage systems.

The choice between multi-split and VRF is a key decision when designing a climate control system for a commercial facility. Both options are multi-zone solutions, but differ in scale, flexibility and cost. There are two main types of multi-zone air conditioning systems, each with their own advantages. Understanding the differences helps you choose the best configuration to suit your space requirements and budget.

Important clarification: Multisplit and VRF are industrial and commercial air conditioning technologies. They are used on objects with an area of ​​500 m² or more. For domestic premises (apartments, private houses) and mobile objects, other architectures are used: split systems, window air conditioners and mobile units. Household systems require a different approach to design and installation. ABL Engineering Group specializes exclusively in the B2B segment of industrial and commercial facilities.

Multisplit system is built on the principle of one outdoor unit to which it is connectedseveral indoor units (minimum two, maximum eight pieces). This configuration provides cooling and heating for commercial spaces of 500 m² or larger. The system is easier to install, more economical to install and requires fewer engineering solutions when laying routes and electrical installations.

VRF system(Variable Refrigerant Flow) is a scalable solution that allows you to connect significantly more indoor units to one or more compressor stations. VRF provides more flexible temperature control in each zone independently, which is critical when there are many rooms with different microclimate requirements.

When to choose multisplit instead of VRF

• Facility with 2–8 cooling zones. If your room requires several indoor units, but does not exceed eight, multisplit is the best choice. VRF in this case will be redundant in functionality and cost.
• Administrative buildings and small office centers. Multisplit copes with uniform air conditioning of office spaces, corridors and meeting rooms without complex control logic.
• Shopping centers with a standard layout. When rooms are uniform in purpose and temperature requirements, multi-split architecture simplifies installation and maintenance.
• Limited installation budget. Multisplit is cheaper to install due to shorter pipeline lengths, ease of electrical installation and the absence of complex control systems.
• Deadlines are critical. Multisplit installation takes less time, which minimizes downtime for your business.

Scalability: maximum number of blocks

This is the key difference between the two technologies:

Table 1. Comparison of multi-split and VRF systems

If your facility is growing and requires expansion of the climate system, VRF allows you to add new units without replacing outdoor equipment. Multisplit in this case will require the installation of an additional outdoor unit, which complicates the architecture and requires recalculation of the entire system.

ABL Engineering Group experience: 40+ specialized projects in Kazakhstan

ABL Engineering Group has implemented both types of configurations at industrial and commercial facilities throughout Kazakhstan: Almaty, Astana, Temirtau, Shymkent, Aktobe. Since 2009, we have equipped factories (ArcelorMittal), shopping centers, logistics warehouses and administrative buildings with climate control systems. Our own installation teams and our own production of equipment in Temirtau (modern machine park, 2 workshops with an area of ​​more than 1000 m²) guarantee quality and deadlines.

Our engineers will calculate the power, determine the optimal number of indoor units and select a configuration that suits your budget and technical requirements. We work with proven European and Asian manufacturers.

Expert advice from the management of ABL Engineering Group: Not all facilities require VRF. Multisplit is a proven solution that provides reliable air conditioning at lower costs. The choice of system depends on the specific conditions of your premises, the number of zones and development prospects. We recommend conducting a technical inspection of the property before making a decision.

Installation of a multi-split air conditioning system is a complex process that requires strict adherence to technology and sequence of work. ABL Engineering Group carries out installation based on its own experience of 40+ specialized projects and coordinates the work of its own installation teams, ensuring that downtime at your facility is minimized.

Stage 1: Design and power calculation

At the first stage, our engineers design the system taking into account the characteristics of your premises. Power calculations are based on area, thermal insulation and number of people in the room. We determine the optimal type and number of indoor units (from 2 to 8 pieces), select the location of the outdoor unit and indoor modules. At this stage, all the conditions of the object are taken into account – architectural features, electrical communications, the possibility of hidden routes.

Stage 2: Laying routes and pipelines

Installation work includes laying pipelines between the outdoor and indoor units. Our installers carry out work both on open circuits and on hidden routes in the wall and ceiling. Pipelines are laid in compliance with the requirements of tightness and thermal insulation. At this stage, drainage systems are also installed to remove condensate from the indoor units. The length of the pipelines and the number of holes in the structures are determined by the project and may vary depending on the distance between the blocks.

Stage 3: Connecting freon and drainage systems

After laying the pipelines, freon lines are connected. This process requires high qualifications – it is necessary to ensure the tightness of all connections and the correct pressure in the system. Drainage systems are connected to indoor units and discharged into the sewer system or outside the building. All work is performed by certified specialists who guarantee the reliability of freon connections.

Stage 4: Electrical installation and cabling

Electrical installation includes connecting control and power cables between the outdoor and indoor units, as well as connecting to the facility’s electrical network. Our engineers take into account electrical requirements and ensure the safety of all electrical communications. Cables are laid in protective boxes or hidden routes in accordance with the design. At this stage, all necessary circuit breakers and commissioning equipment are installed.

Stage 5: Testing and launching the system

The final stage of installation includes full testing of the system. Installers check the tightness of freon lines, the functionality of all indoor and outdoor units, the correctness of drainage systems and electrical connections. The system is started in cooling and heating mode, and the stability of operation is checked. After successfully passing all tests, the system is put into operation with documentation and maintenance recommendations.

The timing of installation work depends on the complexity of the object: standard projects take 5-7 working days, objects with hidden routes and complex architecture – 10-15 working days. ABL Engineering Group coordinates work schedules to minimize disruption to your business process. Having our own installation teams allows us to flexibly plan deadlines and ensure high quality of work at every stage.

The cost of installing a multi-split system depends on many factors specific to each facility. ABL Engineering Group provides detailed estimates with no hidden costs, allowing you to make informed decisions during the planning stage.

What is the cost of installation?

The price of the work includes several key components:

• Equipment cost— outdoor unit and selected types of indoor units (wall-mounted, cassette, duct or floor-ceiling). We work with proven global manufacturers.
• Installation work— laying freon routes, electrical installation, connecting drainage systems, installing brackets and fasteners.
• Object complexity— the length of pipelines between the outdoor and indoor units, the need to lay hidden routes, the presence of electrical communications, architectural features of the room.
• Consultation and design— calculation of the required power, determination of optimal locations for installing units, selection of system configuration.

The average price for installing a basic system (2-3 indoor units, standard length of routes) is from 150,000 tenge. For objects with increased complexity (hidden routes, electrical installation in existing communications), the cost of work increases in proportion to the volume and labor costs.

Does the price include the laying of hidden routes and electrical installation?

Yes, our estimate covers the full range of installation work:

• Laying hidden routes in walls and ceilings (if necessary).
• Electrical installation: connecting the outdoor unit to the electrical network, laying control cables between the units.
• Drainage systems: installing drainage pipes and ensuring proper drainage of condensate.
• Sealing of openings and passages of communications.

All work is carried out in accordance with technical standards and warranty conditions. Our in-house installation teams have experience installing systems at industrial sites, shopping centers, administrative buildings and warehouse complexes, including ArcelorMittal and other large clients.

How to order and get an estimate

The process of obtaining an accurate cost includes several stages:

1. Leave a request— contact our manager by phone or through the form on the website. Indicate the area of ​​the facility, the number of rooms, and the required types of indoor units.
2. Specialist consultation— the engineer will inspect the facility, clarify the features of the premises, the length of the routes, and the presence of electrical communications.
3. Let’s calculate the estimate— based on the collected data, we will prepare a detailed calculation of the cost of equipment and work without hidden costs.
4. Receive a call with an offer— the manager will contact you, discuss options, answer questions and offer the optimal solution.

A transparent costing methodology is one of the key principles of ABL Engineering Group. We guarantee that the estimate reflects all work, materials and services. Warranty and service conditions are specified in the contract and include technical support after installation.

Since 2009, we have installed air conditioning systems at 40+ facilities throughout Kazakhstan. Our own production base in Temirtau (modern machine park, 2 workshops with an area of ​​more than 1000 m²) ensures quality control and independence from suppliers. Call or leave a request – get professional advice and an accurate estimate in the shortest possible time.

The reliability of a multi-split air conditioning system begins withquality of components. ABL Engineering Group does not rely on external suppliers – we manufacture critical equipment elements at our own plant in Temirtau, which guarantees completequality control at every stage.

ABL production facilities in Temirtau

Ourproduction equipped with high-precision CNC machines and occupies two workshops with a total area of more than 1000 m². This allows us to:

• Manufacture components of multi-split systems in accordance with international quality standards
• Ensure prompt supply of installation teams with necessary parts
• Minimize delivery times and eliminate delays at sites
• Ensure compatibility of all system elements

Ownproduction in Temirtau is a strategic advantage that distinguishes ABL Engineering Group from competitors who are completely dependent on import supplies.

Advantages of in-house production for customers

Independence from external suppliers means we are not subject to market fluctuations, logistics delays or import problems. This directly affects the quality of your system:

• Quality control at all stages – from raw materials to the finished component
• The ability to quickly adapt production to the specific requirements of the facility
• Guarantee of originality and compatibility of all parts
• Reducing the risk of defects and unreasonable equipment failures
• Direct responsibility forquality each component

Since 2009, ABL Engineering Group has installed multi-split systems on the market40+ objects– from industrial plants to large shopping centers. Our own production base and our own installation teams allow us to provide both a high level of performance and reliable technical support after the system is launched.

Ownproduction is not just a marketing ploy, but a guarantee that every component of your system has passed strict control and meets our reliability standards.

The reliability of a commercial air conditioning contractor is verified by a portfolio of clients. ABL Engineering Group works with the most demanding customers – large industrial enterprises, factories, shopping centers, warehouses and office centers throughout Kazakhstan.

ArcelorMittal and other industrial giants trust us

Among our clients –ArcelorMittal, one of the largest steel producers in the world. Industrial facilities of this scale place maximum demands on the reliability of climate control systems: continuous operation without failures, tightness of freon systems, compliance with strict electrical safety standards. Since 2009, ABL Engineering Group has installed multi-split systems in40+ objects, including the largest industrial enterprises in the region. This proves that we understand the specifics of industrial facilities and can guarantee quality workmanship.

Experience working with shopping centers and warehouses

Shopping centers and warehouse complexes require a special approach to air conditioning: large open areas, high ceilings, intensive use of premises. Multi-split systems in such facilities must ensure uniform distribution of cooled air and operate without downtime. Our client base includes large shopping centers and logistics complexes, where we have successfully implemented air conditioning systems using various types of indoor units – from wall-mounted to cassette and ducted solutions.

Office centers and administrative buildings

Office centers and administrative buildings require a comfortable microclimate for workers and visitors. Multi-split systems in such facilities must be reliable, energy efficient and aesthetically pleasing. ABL Engineering Group has experience working with administrative buildings of various sizes – from small office premises of 500 m² to large complexes. Our own installation teams ensure high-quality completion of work on time, minimizing disruption to clients’ workflow.

Why your customer base is your guarantee:

• Working with demanding industrial clients means we meet the highest quality standards;
• A portfolio of 40+ specialized projects is proof of the scale of experience and reliability;
• Clients return to us because we deliver on our promises on time, quality and warranty;
• Experience working with various types of objects allows us to find the optimal solution specifically for your case.

If you are looking for a contractor who understands the specifics of industrial and commercial projects, contact us. We are ready to provide recommendations from our clients and discuss the details of your project.

Benefits of the ABL Engineering Group warranty program

Our protection differs from standard offerings from competitors due to:

• Own production— a modern machine park and 2 workshops with an area of more than 1000 m² in Temirtau ensure quality control at all stages;
• many years of experience— more than 40+ completed projects (ArcelorMittal, industrial plants, shopping centers, warehouses, office centers);
• Personal responsibility of management— the director and head of the VET guarantee the fulfillment of all obligations;
• own installation teams— fast departure and professional service throughout Kazakhstan (Almaty, Astana, Temirtau, Shymkent, Aktobe);
• We work only with trusted manufacturers— we select equipment with a proven reputation for reliability.

This approach ensures that the client receives not only installed equipment, but also full support throughout the entire life of the multi-split air conditioning system.

After installing a multi-split air conditioning system, the reliability of the equipment depends on quality service. ABL Engineering Group provides comprehensive maintenance and repair, ensuring trouble-free operation of the system throughout its entire service life.

How often is maintenance required?

Regular maintenance is the basis for the longevity of a multi-split system. Preventative maintenance recommended1–2 times a year. The frequency depends on the intensity of use, climatic conditions and type of object:

• Administrative buildings and offices – once a year (minimum)
• Objects with year-round operation – 2 times a year
• Industrial facilities with high load – up to 4 times a year

Skipping maintenance results in reduced efficiency, increased energy costs, and the risk of system failure at a critical time.

Preventative cleaning and system diagnostics

Each maintenance includes:

• Freon check— monitoring pressure in the system, identifying leaks
• Cleaning filters indoor units – removing dust and dirt, restoring performance
• System diagnostics— checking electrical connections, condenser condition, compressor operation
• Cleaning the heat exchangers of outdoor and indoor units
• Inspection of drainage systems and pipelines
• Testing of sensors and control electronics

Preventative diagnostics allows you to identify problems at an early stage, avoiding costly repairs. ABL Engineering Group specialists use professional equipment to accurately assess the condition of equipment.

Cost and timing of repairs

The cost of repair depends on the nature of the fault and the type of work required. ABL Engineering Group provides a transparent estimate after diagnosis:

Emergency repairs are carried out on a priority basis. Having our own installation teams allows us to quickly respond to faults and minimize facility downtime.

Maintenance warranty: ABL Engineering Group guarantees the quality of all service work. Warranty conditions and terms are specified in the service agreement. It is recommended that you sign a service agreement when installing the system to ensure priority service and fixed prices.

For advice on the maintenance of your multi-split system, contact the ABL Engineering Group maintenance department. The head of the technical maintenance department, Lyubov Ivanovna Korzhuk, and Alexander Aleksandrovich Semenok, an engineer, will help develop the optimal maintenance plan for your facility.

We have collected answers to the most commonquestions about multi-split systems: from technical characteristics to cost, terms and warranty. Everything you needinformation is based on ABL Engineering Group’s 15 years of experience with industrial and commercial sites throughout Kazakhstan. On our website you will find detailedarticles about the choice of equipment,object map with completed projects and completeprivacy policy our company.

The answers were prepared by ABL Engineering Group experts: Ildar Taufikovich Khasanov (Director), Maxim Aleksandrovich Korzhuk (management), Alexander Aleksandrovich Semenok (Technical Department engineer). Updated: 2024.

How is multisplit different from VRF configuration?

The main difference is in scale: multi-split connects up to 8 indoor units to one outdoor unit, while VRF allows you to scale up to 50+ units. Multisplit is optimal for administrative buildings and commercial premises 500–2000 m², VRF – large industrial facilities (factories, shopping centers, warehouses).

What is the maximum number of indoor units that can be connected?

A multisplit can be connected to one outdoor unitmaximum 8 indoor units. This limitation is due to the performance of the compressor and the hydraulic characteristics of the freon line. Types of blocks: wall-mounted, cassette, channel, floor-ceiling – can be combined in one configuration.

How long does installation take?

Installation time depends on the complexity of the object and the number of blocks:

• 4–6 blocks: 5–10 working days
• 7–8 blocks: 10–15 working days
• Complex objects(reinforced concrete, dismantling): +5–7 days

Our own installation teams work in parallel, minimizing downtime at your site. All work is consistent with your production schedule.

What is the installation cost?

The price depends on:

• Room area and number of blocks
• Type of indoor units (wall-mounted units are cheaper, cassette units are more expensive)
• Freon line lengths (standard up to 20 m, then additional payment)
• Difficulties in electrical installation and gating

We provide a transparent estimate with no hidden costs.Contact the manager(phone, form on the website) – receive a cost estimate for your particular property within 24 hours.

What brands of equipment do you use?

ABL Engineering Group works only with proven European and Asian manufacturers. We select equipment for the task according to the following criteria:

• Energy efficiency— high SEER/SCOP indicators
• Reliability— compressor life and operational stability
• Value for money— solutions for the facility’s budget
• Noise level— comfort for staff and visitors
• Service— availability of spare parts and support in Kazakhstan

Each model undergoes our internal testing for reliability and energy efficiency. Technical specifications are available upon request.

Do you provide a guarantee for installation work?

Yes we provideguarantee for all installation work. The conditions and terms are specified in the contract and depend on the type of object:

• Standard Warranty: 24 months for installation
• Extended Warranty: 36 months (optional)
• Coverage: tightness of the freon system, electrical safety, functionality of all components

The manufacturer’s warranty on equipment is 3–5 years depending on the model.

What is the minimum size of a multisplit installation object?

There is no strict minimum size – we work with objects of any scale, from a small store to an industrial plant. Our specialization is industrial and commercial facilities: factories, shopping centers, warehouses, office centers, administrative buildings.

Do you work with objects outside Almaty and Astana?

Yes, we work throughout Kazakhstan:

• Almaty— main office and production
• Astana— branch and installation teams
• Temirtau— own production (modern machine park, 2 workshops >1000 m²)
• Shymkent— regional office
• Aktobe— affiliate network

Our logistics network and installation teams allow us to complete projects in any region of the country on time.

Does the installation cost include the laying of hidden routes?

Yes, the installation cost includes laying hidden routes under standard conditions:

• Wall chipping (depth up to 30 mm)
• Laying in cable channels
• Sealing the grooves with putty

Additional work (drilling reinforced concrete, dismantling structures, strengthening the electrical network) is assessed separately after the engineer visits the site.

How is the required power calculated?

The configuration power is calculated based on:

• Room area (approximately 100 W per 1 m² with standard thermal insulation)
• Ceiling heights
• Number of windows and their orientation
• Thermal insulation of walls and roofs
• Internal heat sources (equipment, people, lighting)

Example: an office of 1000 m² requires approximately 100 kW of cooling capacity. Our engineers carry out thermal calculations and select the optimal configuration of the units (for example, 2 outdoor units of 50 kW each with 8 indoor units).

What additional systems can be integrated?

Multi-split configuration integrates with:

• Ventilation: supply and exhaust systems (HVAC)
• Dehumidifiers and humidifiers: maintaining humidity 40–60%
• Climate control systems: automation (BMS, SCADA)
• CO₂ and temperature sensors: smart control

We will select additional components in accordance with the requirements of your facility and budget.

How often is maintenance required?

Maintenance recommended2 times a year. Availability of regular service is critical:

• Spring (March–April): preparation for the summer season
• Autumn (September–October): preparation for winter

During maintenance: cleaning filters, checking freon levels, electrical diagnostics, bearing lubrication. Regular maintenance extends service life and prevents emergency repairs. The cost of seasonal maintenance is affordable (from 15,000 tenge).

Is it possible to install a multi-split in a finished room?

Yes, multi-split can be installed in a ready-made room. Our installers minimize disruption to finishes and structures using:

• Hidden routes in the walls
• Accurate chipping (no dust or noise)
• Cable channels (if gating is not possible)
• Protection of furniture and equipment

Installation is carried out at an agreed time so as not to disrupt your workflow.

What are the electrical connection requirements?

Multi-split configuration requires:

• Three-phase power supply 380V: power 10+ kW
• Single-phase power supply 220V: power up to 10 kW
• Separate circuit breaker: 16–32 A (depending on power)
• Grounding: mandatory (PE conductor)

Our engineers check the electrical characteristics of the facility and, if necessary, coordinate the strengthening of the electrical network with the energy supply organization.

How much does maintenance and repair cost?

The cost depends on the scope of work:

• Seasonal service: 15,000–25,000 tenge (cleaning, diagnostics)
• Replacing filters: 5,000–10,000 tenge
• Freon replenishment: 20,000–50,000 tenge (depending on volume)
• Emergency repair: assessed after diagnosis

We offer annual fixed price service contracts.

How long does a multisplit last?

With proper installation and regular maintenance, the multisplit serves10–15 years. High quality components ensure reliability throughout the entire period of operation. Durability is confirmed by the experience of operating systems at our clients’ sites.

What is the freon consumption and how often should I replenish it?

The sealed configuration does not require freon replenishment when installed correctly. If a leak is detected, we:

• We carry out diagnostics (search for leakage)
• We eliminate the cause (soldering, replacing seals)
• We replenish the refrigerant volume in accordance with the manufacturer’s technical requirements

Leakage is a sign of faulty installation or damage to the route. With an ABL guarantee, we will fix the leak free of charge.

Is it possible to expand the system by adding additional blocks?

Yes, if the number of blocks does not exceed 8, you can expand the configuration. All extension information requires:

• Reestimating the power of the outdoor unit
• Checking the freon line (replenishing freon may be required)
• Electrical installation work (new wiring of the unit)

The cost of expansion is from 150,000 tenge (depending on the type of block and complexity).

What are the advantages of ABL’s own production?

Own production in Temirtau (modern machine park, 2 workshops with an area of more than 1000 m²) with a full warehouse and store of components provides:

• Quality control: All components are checked in the workshop
• Supplier independence: rapid production of specialized parts
• Execution speed: reduction of terms by 20–30%
• Flexibility: possibility of customization for your object

This guarantees reliability and speed of project completion. Our portfolio includes 40+ specialized projects, including ArcelorMittal, large factories, shopping centers and warehouses.

Still have questions?

Contact our team of experts:

• Phone:[insert number]
• Email:[enter email]
• Callback form:[link to form]
• Portfolio and cases: look on the website
• Map of objects: interactive map

We will provide detailed consultation and calculation of the cost of installing a multi-split configuration for your facility. Our reviews and portfolio of 40+ specialized projects confirm the quality of work and reliability of the partnership with ABL Engineering Group.

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