Inverter multi-split systems – efficient heating and cooling with one outdoor unit

Inverter Multi-Split Systems – Efficient Heating and Cooling with One Outdoor UnitWhen one room is not enough and the facade cannot fit three or four outdoor units, an inverter multi-split system is the logical choice. It connects two to five indoor units to one compact outdoor unit, and each unit in its own room is controlled independently — with its own temperature, fan speed and operating mode.At Svit Komfortu you will find multi-split configurations from Daikin, Gree, Mitsubishi Heavy and Kaisai — with free delivery in Varna and the surrounding area, professional installation and a full manufacturer’s warranty. All models use eco-friendly R32 refrigerant and reach an energy class of up to A+++.Why Choose a Multi-Split Instead of Several Separate Air Conditioners?
A standard split system requires one outdoor unit for each room. In a three-room apartment, that means three units on the facade, three separate installations and three times as many pipe runs. A multi-split solution removes these limitations — you install a single outdoor unitthat powers all the indoor units.The practical benefit is tangible: less space taken up on the facade, less noise from one running compressor instead of three, and a lower overall investment in piping and installation work. Each indoor unit keeps its independence — the bedroom can be at 21 °C, the living room at 24 °C, and the kitchen air conditioner can be switched off completely.It is worth noting that all indoor units in a multi-split system run in the same mode — either cooling or heating. This is not a limitation in most home situations, but it is good to know in advance.Multi-Split Brands in Our Catalog
We work with four manufacturers, each covering a different price segment and feature set. Below you will find a summary, and specific models are in the category catalog.BrandSegmentMax. unitsEnergy classPrice from (outdoor unit)DaikinPremiumup to 5A+++ / A++from 1 330 € to 5 320 €Mitsubishi HeavyHigh-endup to 5A++ / A+from 1 280 € to 4 550 €Mitsubishi ElectricHigh-endup to 5A++ / A+from 1 350 € to 4 800 €ToshibaMid-to-highup to 5A++ / A+from 1 050 € to 3 900 €GreeMid-rangeup to 3A++ / A+from 870 € to 2 150 €KaisaiBudgetup to 5A++ / A+from 640 € to 1 840 €AUXBudgetup to 4A++ / A+from 580 € to 1 650 €
Prices apply to the outdoor unit only. Indoor units are ordered separately, depending on capacity and mounting type. For an up-to-date quote on a complete set — get in touch with us.Daikin — the technology leader in multi-splits
Daikin is the only HVAC manufacturer that designs and builds its own compressors. The MXM-A series allows up to five indoor units to be connected, using models from the Perfera, Comfora, Stylish and Sensira series. The Daikin 2MXM40A model (for two units, 14 000 BTU) starts at around 1 360 € for the outdoor unit alone, while the more powerful 5MXM90A for five rooms reaches approximately 5 320 €.Mitsubishi Heavy — resilience in extreme temperatures
Mitsubishi Heavy SCM series multi-split systems run reliably at outdoor temperatures down to −25 °C in heating mode, which makes them suitable for areas with harsher winters. The SCM40ZS-W outdoor unit (for two units) sits in the range of around 1 280 €, while the SCM100ZM-S model for up to five units costs around 4 550 €.Gree Free Match — flexibility at a sensible price
Gree’s Free Match series lets you freely combine wall-mounted, floor and cassette indoor units. GWHD outdoor units with a capacity of 18 000 to 36 000 BTU cover the needs of smaller apartments and offices. The price range is from around 870 € for a dual configuration to 2 150 € for a triple one.Kaisai — a budget alternative with inverter technology
The Kaisai multi-split systems are among the most affordable on the Bulgarian market. Despite the lower price, they use R32 refrigerant and achieve an A++ energy class. The K20C-18HFN32 model (for two units, 18 000 BTU) is available from around 640 € for the outdoor unit.How to Choose the Right Multi-Split Configuration?
Choosing a multi-split system depends on three specific parameters: number of rooms, floor area of each room and how you use it (year-round heating or summer only). Below is a sample table for guidance:ConfigurationSuitable forOutdoor unit capacityIndicative budget (system without installation)2 units (9 000 + 9 000 BTU)Two-room apartment up to 50 m²14 000 – 18 000 BTUfrom 1 430 € to 2 810 €2 units (9 000 + 12 000 BTU)Two-room apartment up to 65 m²18 000 – 21 000 BTUfrom 1 640 € to 3 170 €3 units (9 + 9 + 12 000 BTU)Three-room apartment up to 85 m²24 000 – 27 000 BTUfrom 2 300 € to 4 350 €4 units (9 + 9 + 12 + 12 000 BTU)Four-room apartment up to 110 m²36 000 BTUfrom 3 320 € to 6 140 €5 indoor unitsHouse or large office42 000+ BTUfrom 4 600 € to 8 180 €
Budgets include the outdoor unit and indoor units without installation. The final price depends on the brand, the type of indoor units and the length of the pipe run. For an accurate quote, we recommend a free consultation with one of our specialists.Types of Indoor Units for Multi-Split Systems
One of the advantages of a multi-split is the ability to combine different types of indoor units within one system. The choice depends on the layout of the room and your mounting preferences:Wall-mounted indoor units — the most common option. They are mounted high on the wall, take up minimal space and suit rooms from 15 to 45 m². Capacities from 7 000 to 18 000 BTU.Floor/ceiling indoor units — mounted on the floor (blowing warm air upward) or on the ceiling. Convenient for rooms with tall windows or limited wall space.Cassette (ceiling-recessed) units — ideal for offices, restaurants and retail spaces. They distribute air evenly in four directions and remain almost invisible once installed.Ducted indoor units — hidden behind a suspended ceiling, they distribute air through ducts. Best for new builds or major renovations.In most residential projects, a combination of wall-mounted units of different capacities is the most practical solution. For a 15–20 m² bedroom, a 9 000 BTU unit is usually enough; for a 25–35 m² living room, 12 000 BTU; and for a larger space of 40+ m², 18 000 BTU. If you are not sure which capacity is right, read our guide to choosing an air conditioner for an apartment, which includes a BTU calculator.Energy Efficiency and Power Consumption
The inverter technology in multi-split systems adjusts the compressor speed smoothly, without the frequent on/off cycling of conventional models. In practice, this means up to 40 % lower electricity consumption with year-round use.Models with an A+++ energy class (such as Daikin’s MXM-A series) have a seasonal energy efficiency ratio (SEER) above 8.5 in cooling and a SCOP above 4.6 in heating. That makes them a real alternative to electric convectors and radiators — with a significantly lower electricity bill. For detailed information on the cost of heating with an air conditioner, see our article on heating with an air conditioner.Multi-Split System Installation in Varna
Installing a multi-split system is more complex than a standard split installation. Each indoor unit needs its own run of refrigerant and drain piping to the outdoor unit. The length of each run, the pipe routing and the location of the outdoor unit must be planned in advance.Our team offers:Free on-site survey — before you buy, we assess the installation options and prepare a tailored quote.Professional installation — with vacuuming, leak testing and commissioning.Installation warranty — separate from the manufacturer’s warranty.
You will find more information about our installation services on the page air conditioner installation. For Varna and the region — see air conditioner installation in Varna.Frequently Asked Questions About Multi-Split SystemsWhat is the difference between a multi-split and a standard split system?
A split system serves one room — one indoor unit, one outdoor unit. A multi-split connects 2 to 5 indoor units to one outdoor unit, saving facade space and reducing overall noise.Do all rooms have to run at the same time?
No. Each indoor unit is switched on and off independently. If you don’t need cooling in the bedroom, simply turn it off with the remote — the others keep running.Is a multi-split system more expensive than separate air conditioners?
The equipment for a multi-split system is usually comparable or slightly higher in total cost. The savings come from less facade space, shorter installation time with a prepared pipe route, and a single unit to service.How long can the pipe run be?
It depends on the model — usually up to 20–25 meters from the outdoor unit to the farthest indoor unit, with a maximum height difference of 10 to 15 meters. The exact values are set by the manufacturer’s technical specifications.Do you offer free delivery of multi-split systems?
Yes — free delivery in Varna and the region. For the rest of the country, contact us for information on shipping terms.Can I combine wall-mounted and floor units in one system?
With most brands — yes. The Gree Free Matchseries, the Daikin MXM series and the Mitsubishi Heavy SCM series allow you to combine different types of indoor units, as long as their total capacity matches the capacity of the outdoor unit.Need a multi-split system for your home or office?
Contact the Svit Komfortu team for a free consultation and a tailored quote. We will choose the optimal configuration for your rooms, budget and usage.📞 Call us: +359 88 639 24 24 |  📩 Send an inquiry  |  🏪 Browse the catalog