Question 1

What is the best multi-split air conditioner overall?

Accepted Answer

The best multi-split air conditioner overall is Hisense New Comfort 3AMW58U4SZD1, with an overall score of 8.42 points, a cooling capacity of 2 × 9000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £1160.
The Hisense New Comfort 3AMW58U4SZD1 is a high-performance 5.8 kW trial-split inverter outdoor air conditioning unit configured to power up to three indoor units simultaneously, utilizing eco-friendly R32 refrigerant. Main characteristics and pros include an energy efficiency rating of A++ for cooling and A+ for heating, robust 3D/4D auto-swing airflow technology, an ultra-quiet silent mode operating at just 19 dB, and convenient intelligent features like the "I Feel" temperature-sensing remote and optional Wi-Fi smart control.
Runner-up: Hisense New Comfort 2AMW42U4RRA, with an overall score of 8.23 points, a cooling capacity of 7000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £620.

Question 2

What is the best cheap multi-split air conditioner?

Accepted Answer

The best cheap multi-split air conditioner (£350 or less) is SereneLife SLACHT128EU 12000 BTU Portable Air Conditioner, with an overall score of 7.33 points, a cooling capacity of 12000 BTU/h, and an affordable price of around £340.
The SereneLife 12000 BTU Mobile Air Conditioner is a versatile 3-in-1 climate control system featuring cooling, a 3-speed fan, and a built-in dehumidifier capable of removing up to 1.5 to 1.8 litres of moisture per hour. Designed to efficiently cool spaces up to 450 to 550 square feet with an airflow rate of up to 370 m³/h, the unit stands out for its user-friendly digital touch button LED panel, smart Wi-Fi application connectivity, a 24-hour programmable timer, and smooth-gliding caster wheels for seamless room-to-room portability.

Question 3

Which multi-split air conditioner offers the best value for money?

Accepted Answer

The multi-split air conditioner offering the best value for money is SereneLife SLACHT128EU 12000 BTU Portable Air Conditioner, with an overall score of 7.33 points, a value-for-money score of 7.41 points, and a price of around £340. It also suits rooms of up to 35.303 m² and uses R32 refrigerant.
Runner-up: DILOC D.MULTI240 9000+12000 BTU, with an overall score of 7.85 points and a price of around £530.

Question 4

Which multi-split air conditioner has the best reviews?

Accepted Answer

The multi-split air conditioner rated highest by customers is Hisense New Comfort 3AMW58U4SZD1, with an outstanding user rating of 9.44 out of 10, an overall score of 8.42 points, and a price of around £1160. It also has a SEER of 7.3 and reaches a SCOP of 4.
Best value alternative: SereneLife SLACHT128EU 12000 BTU Portable Air Conditioner, with an overall score of 7.33 points and a price of around £340.

Question 5

What is the best multi-split air conditioner under £500?

Accepted Answer

The best multi-split air conditioner under £500 is SereneLife SLACHT128EU 12000 BTU Portable Air Conditioner, with an overall score of 7.33 points, a cooling capacity of 12000 BTU/h, and a price of around £340. It also suits rooms of up to 35.303 m² and uses R32 refrigerant.

Question 6

What is the best multi-split air conditioner under £1000?

Accepted Answer

The best multi-split air conditioner under £1000 is Hisense New Comfort 2AMW42U4RRA, with an overall score of 8.23 points, a cooling capacity of 7000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £620.
The Hisense New Comfort 2AMW42U4RRA is a multi-split outdoor air conditioning unit featuring a 4.1 kW cooling capacity, a 4.5 kW heating capacity, and full DC inverter technology utilizing eco-friendly R32 refrigerant. Its main characteristics include an efficient twin rotary compressor, electronic expansion valve control, a compact 730x536x260 mm footprint weighing 34 kg, and low-voltage operational stability.
Runner-up: DILOC D.MULTI240 9000+12000 BTU, with an overall score of 7.85 points, a cooling capacity of 9000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £530.

Question 7

What is the best 18000 BTU multi-split air conditioner?

Accepted Answer

The best 18000 BTU multi-split air conditioner is Hisense Hi-Comfort Dual 9000+18000 BTU, with an overall score of 8.85 points, a cooling capacity of 9000 + 18000 BTU/h, a cooling energy class of A++, and a price of around £830.
The Hisense Hi-Comfort Dual 9000+18000 BTU is a wall-mounted dual-split inverter air conditioning system that operates on eco-friendly R32 refrigerant and achieves a high energy efficiency rating of A++ for cooling and A+ for heating. This configuration features a nominal power of 6.3 kW and includes two indoor units: a 9,000 BTU unit ideal for small spaces up to 25 sqm and an 18,000 BTU unit designed for larger zones up to 60 sqm.
Explore our dedicated best 18000 BTU air conditioners guide for full model rankings.

Question 8

What is the best multi-split air conditioner for small rooms?

Accepted Answer

The best multi-split air conditioner for small rooms is DILOC FRPRO.93Q, with an overall score of 7.17 points, a recommended room size of up to 25 m², a cooling capacity of 3 × 9000 BTU/h, a cooling energy class of A++, and a price of around £1280.
The Diloc Frozen Pro FRPRO.93Q is a high-capacity quadri-split outdoor air conditioner unit that delivers a powerful 32,000 BTU/h (9.4 kW) in cooling mode and 32,000 BTU/h (9.5 kW) in heating mode. Operating on eco-friendly R32 refrigerant, the system delivers seasonal efficiencies with a SEER of 6.1 (Class A++) and a SCOP of 4.0 (Class A+/A++).
Runner-up: Ariston Prios 9+9, with an overall score of 7 points, a recommended room size of up to 30 m², a cooling capacity of 2 × 9000 BTU/h, a cooling energy class of A++, and a price of around £880.
See our complete best air conditioners for small rooms guide for in-depth comparisons and alternatives.

Question 9

What is the best multi-split air conditioner for large rooms?

Accepted Answer

The best multi-split air conditioner for large rooms is Belvit AUX Multi Split 27000 BTU 3x9000, with an overall score of 7.88 points, a recommended room size of up to 60 m², a cooling capacity of 3 × 9000 BTU/h, a cooling energy class of A++, and a price of around £1010.
The Belvit AUX Multi Split Air Conditioner is a high-performance climate control system featuring a 27,000 BTU (7.9 kW) DC Inverter outdoor unit paired with three 9,000 BTU (2.6 kW) wall-mounted indoor units utilizing eco-friendly R32 refrigerant. Main characteristics include independent multi-room operation, independent Wi-Fi and app control for each indoor unit, smart-home compatibility, and high energy ratings of EU A++ for cooling and A+ for heating.
Best value alternative: DILOC D.MULTI240 9000+12000 BTU, with an overall score of 7.85 points, a recommended room size of up to 60 m², a cooling capacity of 9000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £530.
For more top-rated options, check our best air conditioners for large rooms guide.

Question 10

What is the best quiet multi-split air conditioner?

Accepted Answer

The best quiet multi-split air conditioner is DILOC D.MULTI240 9000+12000 BTU, with an overall score of 7.85 points, an indoor sound power level of 50 dB, a cooling capacity of 9000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £530.
The DILOC D.MULTI240 9000+12000 BTU is a residential dual-zone mini-split inverter air conditioner with a total heat pump cooling capacity of 4.1 kW, utilizing eco-friendly R32 refrigerant gas. It features two independent indoor units outputting 9,000 BTU and 12,000 BTU respectively, a backlit hidden display, embedded Wi-Fi connectivity for remote smartphone control, a dehumidification mode, and multiple pre-installed configurations like sleep and turbo functions.
Runner-up: DILOC D.MULTI360 9000+9000+12000 BTU, with an overall score of 7.61 points, an indoor sound power level of 50 dB, a cooling capacity of 2 × 9000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £2110.
Browse our dedicated best quiet air conditioners guide to compare all evaluated models.

Question 11

What is the best Daikin multi-split air conditioner?

Accepted Answer

The best Daikin multi-split air conditioner is Daikin Siesta Classic Dual 9000+12000 BTU, with an overall score of 7.62 points, a cooling capacity of 9000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £1280.
The Daikin Siesta Classic Dual is an inverter multi-split air conditioning system featuring one 9,000 BTU unit and one 12,000 BTU unit connected to a single outdoor unit, utilizing eco-friendly R-32 refrigerant with an energy class rating of A++ for cooling and A+ for heating. Key characteristics and advantages include its compact wall-mounted indoor units (measuring 286x770x225 mm), a very quiet operational sound pressure level lowering down to 20 dBA in silent mode, an energy-saving standby mode that reduces consumption by 80%, a Blue Fin anti-corrosion treated outdoor heat exchanger, and practical advanced modes like Econo, Comfort, and Powerful.
Runner-up: Daikin Sensira Dual 9000+12000 BTU, with an overall score of 6.58 points, a cooling capacity of 9000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £1350.
Explore our dedicated best Daikin air conditioners guide for full model rankings.

Question 12

What is the best Mitsubishi multi-split air conditioner?

Accepted Answer

Leading the Mitsubishi multi-split lineup is Mitsubishi MSZ-AY Multisplit 3.5+3.5 kW, delivering an overall score of 8.81 points, a cooling capacity of 2 × 12000 BTU/h, a cooling energy class of A+++, and retailing for around £1830.
The Mitsubishi MSZ-AY Multi-split system features two 3.5 kW (12,000 BTU) indoor units paired with an eco-friendly R32 refrigerant, delivering a nominal 3.5 kW cooling and 4.0 kW heating capacity per unit for rooms up to 35 m². This system boasts outstanding energy efficiency with a SEER of 8.7 (A+++) and SCOP of 4.7 (A++), alongside built-in Wi-Fi via the MELCloud app, Dual Barrier Coating to protect internal components, and an advanced V-Blocking or Plasma Quad Plus air purification filter.
Runner-up: Mitsubishi MSZ-HR Dual 12000+12000 BTU, with an overall score of 7.69 points, a cooling capacity of 2 × 12000 BTU/h, a cooling energy class of A++, and a price of around £1300.
See our complete best Mitsubishi air conditioners guide for in-depth comparisons and alternatives.

Question 13

What is the best Hisense multi-split air conditioner?

Accepted Answer

Our top-rated Hisense multi-split air conditioner is Hisense New Comfort 3AMW58U4SZD1, achieving an overall score of 8.42 points, a cooling capacity of 2 × 9000 + 12000 BTU/h, a cooling energy class of A++, and priced around £1160. It also has a SEER of 7.3 and reaches a SCOP of 4.
Best value alternative: Hisense New Comfort 2AMW42U4RRA, with an overall score of 8.23 points, a cooling capacity of 7000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £620.

Question 14

What is the best DILOC multi-split air conditioner?

Accepted Answer

Ranking first among DILOC multi-split models is DILOC D.MULTI240 9000+12000 BTU, with an overall score of 7.85 points, a cooling capacity of 9000 + 12000 BTU/h, a cooling energy class of A++, and available for around £530. It also reaches a SCOP of 4 and suits rooms of up to 60 m².
Runner-up: DILOC D.MULTI360 9000+9000+12000 BTU, with an overall score of 7.61 points, a cooling capacity of 2 × 9000 + 12000 BTU/h, a cooling energy class of A++, and a price of around £2110.

Question 15

What is the best Belvit AUX multi-split air conditioner?

Accepted Answer

Topping the Belvit AUX multi-split selection is Belvit AUX Multi Split 27000 BTU 3x9000, earning an overall score of 7.88 points, a cooling capacity of 3 × 9000 BTU/h, a cooling energy class of A++, and costing around £1010. It also has a SEER of 6.3 and reaches a SCOP of 4.16.
Runner-up: Belvit AUX Multi Split 27000 BTU 2x12000, with an overall score of 7.83 points, a cooling capacity of 2 × 12000 BTU/h, a cooling energy class of A++, and a price of around £1320.

10 best multi-split air conditioners in 2026 (28+ compared)

1. Hisense New Comfort 3AMW58U4SZD1

2. Hisense New Comfort 2AMW42U4RRA

3. Belvit AUX Multi Split 27000 BTU 3x9000

4. DILOC D.MULTI240 9000+12000 BTU

5. Belvit AUX Multi Split 27000 BTU 2x12000

6. Daikin Siesta Classic Dual 9000+12000 BTU

7. DILOC D.MULTI360 9000+9000+12000 BTU

8. Belvit AUX Multi Split 36000 BTU 3x12000

9. Haier REVIVE Dual 9000+12000 BTU

10. SereneLife SLACHT128EU 12000 BTU Portable Air Conditioner

11. Hisense New Comfort AMW2-20U4SZD1

12. DILOC FRPRO.93Q

13. Daikin Sensira Dual 9000+12000 BTU

14. Hisense Hi-Comfort Dual 9000+18000 BTU

15. Mitsubishi MSZ-AY Multisplit 3.5+3.5 kW

16. Hisense 3AMW62U4RJC 9000+9000 BTU

17. Hisense New Comfort Quadri 9000+9000+12000+12000 BTU

18. Daikin Siesta Classic Dual 9000+9000 BTU

19. Mitsubishi MSZ-HR Dual 12000+12000 BTU

20. Mitsubishi MSZ-HR25+HR35VF+MXZ-2HA50VF

Multi-split air conditioners: which one should you buy?

What defines the best multi-split air conditioners?

Which brands make the best multi-split air conditioners?

When should you choose a multi-split air conditioner?

How many indoor units can a multi-split air conditioner support?

What cooling capacity and room coverage should a multi-split system provide?

How energy-efficient are multi-split air conditioners?

How much do multi-split air conditioners cost?

What should you check before buying a multi-split air conditioner?

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