Most energy-efficient air conditioners, 3.6–5 kW (2026)

Choosing a model from the most efficient 5% instead of the least efficient 5% in this group saves about €39 a year at the EU average electricity price (0.283 €/kWh). The top model is the Panasonic S-3650PU3E / U-36PZH3E5.

By energy class: A 83 · A+ 159 · A++ 1,158 · A+++ 201 · B 12 · C 1 · D 1

1. 1A+++
   Panasonic S-3650PU3E / U-36PZH3E5

   3.6 kW · SEER 8.9 · 142 kWh/yr
   €40/year
2. 2A+++
   Arielli ASW-12CPH

   3.6 kW · SEER 9 · 142 kWh/yr
   €40/year
3. 3A+++
   MBO-H12A4/MAR3DIBT-EU WIFI

   3.6 kW · SEER 9 · 142 kWh/yr
   €40/year
4. 4A+++
   Tarrington House TH-H12A4/TH3DI

   3.6 kW · SEER 9 · 142 kWh/yr
   €40/year
5. 5A+++
   Arielli ASW-12CPC

   3.6 kW · SEER 9 · 142 kWh/yr
   €40/year
6. 6A+++
   Buderus 7733704030

   4 kW · SEER 8.5 · 144 kWh/yr
   €41/year
7. 7A+++
   Bosch 7733704026

   4 kW · SEER 8.5 · 144 kWh/yr
   €41/year
8. 8A
   KIWI

   4.1 kW · SEER 2.6 · 145 kWh/yr
   €41/year
9. 9A+++
   Animair IDU-G40N1 / ODU-G40N1

   3.6 kW · SEER 8.5 · 148 kWh/yr
   €42/year
10. 10A+++
    AIWA-SA35IN/SA35OUT

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
11. 11A+++
    Fuji Electric ROH14KHCBN/RSH14KHCBN

    4.2 kW · SEER 9.9 · 148 kWh/yr
    €42/year
12. 12A+++
    Panasonic S-36PU2E5B / U-36PZH2E5

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
13. 13A+++
    Konsi KN-TAC-12CHSD/CF11I

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
14. 14A+++
    Tesla TT37AF-1232IAW

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
15. 15A+++
    Rotenso FH35Xi R15/FH35Xo R15

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
16. 16A+++
    Rotenso LE35Xi R15/LE35Xo R15

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
17. 17A+++
    Fujitsu AOEH14KHCBN/ASEH14KHCBN

    4.2 kW · SEER 9.9 · 148 kWh/yr
    €42/year
18. 18A+++
    General AOHH14KHCBN/ASHH14KHCBN

    4.2 kW · SEER 9.9 · 148 kWh/yr
    €42/year
19. 19A+++
    Rotenso AHP35X R16/AHP35Xo R16

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
20. 20A+++
    Vesser WTX12D/TX12D

    3.6 kW · SEER 8.6 · 148 kWh/yr
    €42/year
21. 21A+++
    Polar SIEH0035SDF / SO1H0035SDF

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
22. 22A+++
    Bosch 7733704096

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
23. 23A+++
    IVT 7733704102

    3.6 kW · SEER 8.5 · 148 kWh/yr
    €42/year
24. 24A++
    Panasonic S-3650PK3E / U-36PZH3E5

    3.6 kW · SEER 8.4 · 150 kWh/yr
    €42/year
25. 25A+++
    Chigo CHSCPLUS12

    3.6 kW · SEER 8.5 · 150 kWh/yr
    €42/year
26. 26A+++
    Termet Freeze Gold 3,6 kW T0421000000

    3.6 kW · SEER 8.5 · 150 kWh/yr
    €42/year
27. 27A+++
    Mitsubishi Heavy Industries SCM41ZS-W_SRK15ZS-WFx3

    4 kW · SEER 9.2 · 153 kWh/yr
    €43/year
28. 28A+++
    Mitsubishi Heavy Industries SCM41ZS-W_DXKM05Z6-Wx2_DXKM09Z6-W

    4 kW · SEER 9.2 · 153 kWh/yr
    €43/year
29. 29A+++
    Mitsubishi Heavy Industries SCM41ZS-W_DXKM05Z6-Wx2_DXKM12Z6-W

    4 kW · SEER 9.2 · 153 kWh/yr
    €43/year
30. 30A+++
    Mitsubishi Heavy Industries SCM40ZS-W_SRK20ZSX-Wx2

    4 kW · SEER 9.1 · 154 kWh/yr
    €44/year
31. 31A++
    Panasonic S-3650PU3E / U-36PZ3E5

    3.6 kW · SEER 8.1 · 156 kWh/yr
    €44/year
32. 32A+++
    Daikin FTXTM40A2V1B / RXTM40A2V1B

    4 kW · SEER 9 · 156 kWh/yr
    €44/year
33. 33A++
    Panasonic S-36PK2E5B / U-36PZH2E5

    3.6 kW · SEER 8 · 157 kWh/yr
    €44/year
34. 34A+++
    Daikin FTXTM40S2V1B / RXTM40A2V1B

    4 kW · SEER 8.9 · 157 kWh/yr
    €44/year
35. 35A+++
    Panasonic CS-MZ16CKE + CS-Z25CKEW / CU-2Z41CBE

    4.1 kW · SEER 9.1 · 158 kWh/yr
    €45/year
36. 36A+++
    Heiwa HXEH-2X40-V1 / HMIH-20W-V1 + HMIH-20W-V1

    4.1 kW · SEER 9 · 159 kWh/yr
    €45/year
37. 37A++
    Panasonic S-3650PT3E / U-36PZH3E5

    3.6 kW · SEER 7.7 · 160 kWh/yr
    €45/year
38. 38A+++
    Fuji Electric ROG14KBTA2/RSG07KGTB/RSG07KGTB

    4 kW · SEER 8.7 · 161 kWh/yr
    €46/year
39. 39A+++
    Mitsubishi Electric MXZ-2F42VF3-E1 / MSZ-LN18VG2 + MSZ-LN25VG2

    4.2 kW · SEER 9.1 · 161 kWh/yr
    €46/year
40. 40A+++
    Daikin FTXM20N2V1B / FTXM20N2V1B / 2MXM50M3V1B9

    4 kW · SEER 8.7 · 161 kWh/yr
    €46/year
41. 41A+++
    Daikin FTXM20R5V1B / FTXM20R5V1B / 2MXM50A2V1B9

    4 kW · SEER 8.7 · 161 kWh/yr
    €46/year
42. 42A+++
    Fujitsu AOEG14KBCA2/ASEH07KMCG/ASEH07KMCG

    4 kW · SEER 8.7 · 161 kWh/yr
    €46/year
43. 43A+++
    Bosch 7733703121

    4 kW · SEER 8.7 · 161 kWh/yr
    €46/year
44. 44A+++
    Buderus 7733703136

    4 kW · SEER 8.7 · 161 kWh/yr
    €46/year
45. 45A+++
    Daikin ATXM20N2V1B / ATXM20N2V1B / 2AMXM50M4V1B

    4 kW · SEER 8.7 · 162 kWh/yr
    €46/year
46. 46A+++
    Daikin CTXM15N2V1B / FTXM25N2V1B / 2MXM50M3V1B9

    4 kW · SEER 8.6 · 162 kWh/yr
    €46/year
47. 47A+++
    Daikin CTXM15R5V1B / FTXM25R5V1B / 2MXM50A2V1B9

    4 kW · SEER 8.7 · 162 kWh/yr
    €46/year
48. 48A+++
    Daikin ATXM20A2V1B / ATXM20A2V1B / 2AMXM50M4V1B9

    4 kW · SEER 8.7 · 162 kWh/yr
    €46/year
49. 49A+++
    Mitsubishi Electric MXZ-2HA40VF / MSZ-DW25VF + MSZ-DW25VF

    4 kW · SEER 8.6 · 163 kWh/yr
    €46/year
50. 50A+++
    Mitsubishi Heavy Industries SRC40ZSX-W1_FDT40VH

    4 kW · SEER 8.7 · 163 kWh/yr
    €46/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