Most energy-efficient air conditioners, 5.1–7 kW (2026)

Choosing a model from the most efficient 5% instead of the least efficient 5% in this group saves about €53 a year at the EU average electricity price (0.283 €/kWh). The top model is the Rotenso LEP35Xi R16 / LOP35Xo R16.

By energy class: A 174 · A+ 263 · A++ 3,536 · A+++ 451 · B 25 · C 1 · D 1

1. 1A+++
   Rotenso LEP35Xi R16 / LOP35Xo R16

   5.1 kW · SEER 9.4 · 131 kWh/yr
   €37/year
2. 2A++
   Lamborghini Caloreclima RUBINO S 18

   5.3 kW · SEER 7 · 132 kWh/yr
   €37/year
3. 3A+
   Panasonic CS-E9PB4EA / CU-E9PB4EA

   5.8 kW · SEER 2.5 · 151 kWh/yr
   €43/year
4. 4A+
   Panasonic CS-E9PD3EA / CU-E9PD3EA

   5.8 kW · SEER 2.5 · 151 kWh/yr
   €43/year
5. 5A++
   Fisher FSKIF-1801AE3-EU / FSOIF-1801AE3

   5.3 kW · SEER 6.5 · 185 kWh/yr
   €52/year
6. 6A++
   Vesser WTA18DS/TA18DS

   5.1 kW · SEER 6.1 · 196 kWh/yr
   €56/year
7. 7A+++
   Mitsubishi Heavy Industries SCM50ZS-W_SRK20ZSX-Wx3

   6 kW · SEER 8.8 · 199 kWh/yr
   €56/year
8. 8A++
   Midea EZ-18RD6-I / MX4H-18RD6

   6.1 kW · SEER 7.1 · 206 kWh/yr
   €58/year
9. 9A+++
   Cecotec P82846

   5.1 kW · SEER 8.5 · 209 kWh/yr
   €59/year
10. 10A+++
    Panasonic CS-MZ16CKE + CS-MZ16CKE + CS-Z20CKEW / CU-3Z52CBE

    5.2 kW · SEER 8.7 · 209 kWh/yr
    €59/year
11. 11A+++
    Juro-Pro Superclima Black 18K

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
12. 12A+++
    GREE GWH18AUDXE-K6DNA1B

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
13. 13A+++
    Morris WFIN-50180 / WFOD-50181

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
14. 14A+++
    Daitsu DS-18KTP-5_DOS-18KTP-5

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
15. 15A+++
    Toyotomi CTN-356W/CTG-356W

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
16. 16A+++
    Nørdis NOVA NDI/NDO-NOV18TC1

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
17. 17A+++
    Nørdis / Nordis NOVA NDI/NDO-NOV18TC1

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
18. 18A+++
    Zephir ZAR18000WIFI MY24

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
19. 19A+++
    Konsi KN-TAC-18CHSD/TP51I3A

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
20. 20A+++
    SWD Klimaanlage Split-Klimaanlage A+++ 18000 BTU

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
21. 21A+++
    Viessmann Vitoclima 230-S Dynamic 5,1 kW

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
22. 22A+++
    Grundig GEEPDH 185/ GEEPDH 186 8511503600

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
23. 23A+++
    GREE GWH18AWDXE-K6DNA4A

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
24. 24A++
    Diplomat DAW-180X Smart Winter

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
25. 25A+++
    Rotenso TA50Xi R16/TO50Xo R16

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
26. 26A+++
    Corbero CSP18MISTRAL

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
27. 27A+++
    AUX-M2-18LCLH_(3P)

    5.2 kW · SEER 8.5 · 210 kWh/yr
    €59/year
28. 28A+++
    Daitsu DS-18KZ_DOS-18KZ

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
29. 29A+++
    Morris HMIN-50190 - HMOD-50191

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
30. 30A+++
    Ekokai DPA50NFX

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
31. 31A+++
    Mundoclima MUPR-18-H15A

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
32. 32A+++
    AIRE18-COND ZAFIRO DIAMOND MULTI 2x1 AIRE09-EVAP ZAFIRO DIAMOND-WF AIRE12-EVAP ZAFIRO DIAMOND-WF

    5.2 kW · SEER 8.5 · 210 kWh/yr
    €59/year
33. 33A+++
    Juro-Pro ECOMAX 18k

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
34. 34A+++
    Fisher FSAIF-BL-181FE3 / FSOAIF-BL-181FE3

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
35. 35A+++
    Environ ENCB18000

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
36. 36A+++
    TCL S18F7S5 SN18F7S5 ST18F5

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
37. 37A+++
    Arielli ACSD-18DHG

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
38. 38A++
    Clivet MU2-Y 41M + IMA1-Y 27M + IMA1-Y 27M

    5.3 kW · SEER 6.9 · 210 kWh/yr
    €59/year
39. 39A+++
    Heiwa HXEH-3X50-V1 / HMIH-20W-V1 + HMIH-20W-V1 + HMIH-20W-V1

    5.3 kW · SEER 8.8 · 210 kWh/yr
    €59/year
40. 40A+++
    Morris WFIN-50155/WFOD-50167

    5.1 kW · SEER 8.5 · 210 kWh/yr
    €59/year
41. 41A+++
    GREE GWHD(18)NK6TO+ GWH(07)AUCXB-K6DNA2D/I×3

    5.3 kW · SEER 8.8 · 211 kWh/yr
    €60/year
42. 42A+++
    LG MJ05PC NSJ，MJ07PC NSJ，MJ07PC NSJ/MU3R19 U24A0

    5.3 kW · SEER 8.7 · 211 kWh/yr
    €60/year
43. 43A+++
    Kältebringer KBO18-R290

    5.4 kW · SEER 8.9 · 211 kWh/yr
    €60/year
44. 44A+++
    Mitsubishi Electric MXZ-2F53VFH3-E1 / MSZ-LN18VG2 + MSZ-LN35VG2

    5.3 kW · SEER 8.8 · 212 kWh/yr
    €60/year
45. 45A+++
    Mitsubishi Electric MXZ-2F53VF3-E1 / MSZ-LN18VG2 + MSZ-LN35VG2

    5.3 kW · SEER 8.8 · 212 kWh/yr
    €60/year
46. 46A+++
    GREE GWH18AVDXF-K6DNA1A

    5.3 kW · SEER 8.7 · 213 kWh/yr
    €60/year
47. 47A+
    Panasonic CS-E12PB4EA / CU-E12PB4EA

    5.6 kW · SEER 3.4 · 213 kWh/yr
    €60/year
48. 48A+++
    Heiwa HMEH-50-V1 / HMIH-50W-V1

    5.3 kW · SEER 8.7 · 213 kWh/yr
    €60/year
49. 49A+++
    Inventor EMPVI-18WFI/EMPVO-18

    5.2 kW · SEER 8.5 · 214 kWh/yr
    €61/year
50. 50A+++
    Daikin ATXM35N2V1B / ATXM35N2V1B / 3AMXM52M3V1B

    5.2 kW · SEER 8.5 · 214 kWh/yr
    €61/year

Ranked by annual energy consumption; running cost at the EU average household price. Open a model to see the cost in your country. Methodology