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).

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

1. 101A++
   Hitachi RAM-40NE2F / RAK-15QEF + RAK-35REF

   4 kW · SEER 8.3 · 170 kWh/yr
   €48/year
2. 102A++
   Hitachi RAM-40NE2F / RAK-15QEF + RAK-15QEF

   4 kW · SEER 8.3 · 170 kWh/yr
   €48/year
3. 103A++
   Hitachi RAM-40NE2F / RAK-15QEF + RAK-18REF

   4 kW · SEER 8.3 · 170 kWh/yr
   €48/year
4. 104A++
   Hitachi RAM-40NE2F / RAK-25REF + RAK-35REF

   4 kW · SEER 8.2 · 170 kWh/yr
   €48/year
5. 105A++
   Hitachi RAM-40NE2F / RAK-15QEF + RAK-25REF

   4 kW · SEER 8.2 · 170 kWh/yr
   €48/year
6. 106A++
   Mitsubishi Electric PLA-M35EA / SUZ-M35VA

   3.6 kW · SEER 7.4 · 170 kWh/yr
   €48/year
7. 107A++
   Mitsubishi Electric PLA-ZM35EA2 / PUHZ-ZRP35VKA2

   3.6 kW · SEER 7.4 · 170 kWh/yr
   €48/year
8. 108A++
   Daikin CTXM15N2V1B / FTXM35N2V1B / 2MXM40M4V1B

   4 kW · SEER 8.3 · 170 kWh/yr
   €48/year
9. 109A++
   Panasonic S-36PU2E5A / U-36PE2E5A

   3.6 kW · SEER 7.4 · 170 kWh/yr
   €48/year
10. 110A++
    Mitsubishi Electric PLA-M35EA3 / SUZ-M35VA2

    3.6 kW · SEER 7.4 · 170 kWh/yr
    €48/year
11. 111A+++
    Panasonic CS-Z42YKEA / CU-Z42YKEA

    4.2 kW · SEER 8.6 · 171 kWh/yr
    €48/year
12. 112A++
    Panasonic S-36PY3E / U-36PZH3E5

    3.6 kW · SEER 7.3 · 171 kWh/yr
    €48/year
13. 113A++
    Hitachi RAM-40NP2E / RAK-18RPE + RAK-18QXE

    4 kW · SEER 8.2 · 171 kWh/yr
    €48/year
14. 114A++
    Hitachi RAM-40NP2E / RAK-25RPE + RAK-25RXE

    4 kW · SEER 8.2 · 171 kWh/yr
    €48/year
15. 115A++
    Hitachi RAM-40NP2E / RAK-25RXE + RAK-35RXE

    4 kW · SEER 8.2 · 171 kWh/yr
    €48/year
16. 116A++
    Hitachi RAM-40NE2F / RAK-18REF + RAK-25REF

    4 kW · SEER 8.2 · 171 kWh/yr
    €48/year
17. 117A++
    Daikin FTXM20N2V1B / FTXM35N2V1B / 2MXM40M4V1B

    4 kW · SEER 8.2 · 171 kWh/yr
    €48/year
18. 118A++
    Hitachi RAM-40NP2E / RAK-18QXE + RAK-25RPE

    4 kW · SEER 8.1 · 172 kWh/yr
    €49/year
19. 119A++
    Hitachi RAM-40NP2E / RAK-18QXE + RAK-35RXE

    4 kW · SEER 8.1 · 172 kWh/yr
    €49/year
20. 120A++
    Hitachi RAM-40NP2E / RAK-25RXE + RAK-25RXE

    4 kW · SEER 8.1 · 172 kWh/yr
    €49/year
21. 121A++
    Hitachi RAM-40NP2E / RAK-25RXE + RAK-35RPE

    4 kW · SEER 8.2 · 172 kWh/yr
    €49/year
22. 122A++
    Hitachi RAM-40NE2F / RAK-25REF + RAK-25REF

    4 kW · SEER 8.1 · 172 kWh/yr
    €49/year
23. 123A++
    Mitsubishi Electric MXZ-2HA40VF / MSZ-HR25VF + MSZ-HR25VF

    4 kW · SEER 8.1 · 172 kWh/yr
    €49/year
24. 124A++
    Mitsubishi Electric PLA-M35EA / PUZ-ZM35VKA

    3.6 kW · SEER 7.3 · 172 kWh/yr
    €49/year
25. 125A++
    Mitsubishi Electric PLA-M35EA2 / PUZ-ZM35VKA2

    3.6 kW · SEER 7.3 · 172 kWh/yr
    €49/year
26. 126A++
    Daikin ATXM20N2V1B / ATXM35N2V1B / 2AMXM40M4V1B

    4 kW · SEER 8.2 · 172 kWh/yr
    €49/year
27. 127A++
    Daikin ATXM20M2V1B / ATXM35M2V1B / 2AMXM40M3V1B

    4 kW · SEER 8.2 · 172 kWh/yr
    €49/year
28. 128A++
    Mitsubishi Electric PLA-M35EA3 / PUZ-ZM35VKA3

    3.6 kW · SEER 7.3 · 172 kWh/yr
    €49/year
29. 129A++
    Hitachi RAM-40NP2E / RAK-15QPE + RAK-42RPE

    4 kW · SEER 8.1 · 173 kWh/yr
    €49/year
30. 130A++
    Hitachi RAM-40NP2E / RAK-18QXE + RAK-35RPE

    4 kW · SEER 8.1 · 173 kWh/yr
    €49/year
31. 131A++
    Daikin ATXM25N2V1B / ATXM35N2V1B / 2AMXM40M4V1B

    4 kW · SEER 8.1 · 173 kWh/yr
    €49/year
32. 132A++
    Daikin FTXM25N2V1B / FTXM35N2V1B / 2MXM40M4V1B

    4 kW · SEER 8.1 · 173 kWh/yr
    €49/year
33. 133A++
    Daikin ATXM25M2V1B / ATXM35M2V1B / 2AMXM40M3V1B

    4 kW · SEER 8.1 · 173 kWh/yr
    €49/year
34. 134A+++
    Panasonic CS-Z42TKEA / CU-Z42TKEA

    4.2 kW · SEER 8.5 · 173 kWh/yr
    €49/year
35. 135A+++
    Atlantic 872154

    4.2 kW · SEER 8.5 · 173 kWh/yr
    €49/year
36. 136A++
    Hitachi RAM-40NP2E / RAK-18RPE + RAK-42RPE

    4 kW · SEER 8 · 174 kWh/yr
    €49/year
37. 137A++
    Hitachi RAM-40NP2E / RAK-18QXE + RAK-25RXE

    4 kW · SEER 8.1 · 174 kWh/yr
    €49/year
38. 138A++
    Mitsubishi Electric PLA-M35EA / PUHZ-ZRP35VKA2

    3.6 kW · SEER 7.2 · 174 kWh/yr
    €49/year
39. 139A++
    Mitsubishi Electric PLA-M35EA2 / PUHZ-ZRP35VKA2

    3.6 kW · SEER 7.2 · 174 kWh/yr
    €49/year
40. 140A+++
    Mitsubishi Heavy Industries SCM45ZS-W_SRK20ZSX-W_SRK25ZSX-W

    4.5 kW · SEER 9.1 · 174 kWh/yr
    €49/year
41. 141A++
    Hitachi RAM-40NP2E / RAK-18QXE + RAK-18QXE

    4 kW · SEER 8 · 175 kWh/yr
    €50/year
42. 142A++
    Panasonic S-36PT2E5B / U-36PZH2E5

    3.6 kW · SEER 7.2 · 175 kWh/yr
    €50/year
43. 143A++
    Fujitsu AOYG14KHCAN/ASYG14KHCA

    4.2 kW · SEER 8.3 · 176 kWh/yr
    €50/year
44. 144A++
    Fuji Electric ROG14KHCAN/RSG14KHCA

    4.2 kW · SEER 8.3 · 176 kWh/yr
    €50/year
45. 145A++
    General AOHG14KHCAN/ASHG14KHCA

    4.2 kW · SEER 8.3 · 176 kWh/yr
    €50/year
46. 146A++
    Zephir ZMS12000WIFI MY26

    3.6 kW · SEER 7 · 176 kWh/yr
    €50/year
47. 147A++
    Midea CB1-12HRFN8-I / CB1-12HFNX-O

    3.6 kW · SEER 7.1 · 177 kWh/yr
    €50/year
48. 148A++
    LG RM2U15 U18 / RMN09 NSJ , RMN12 NSJwithdrawn

    4.1 kW · SEER 8.1 · 177 kWh/yr
    €50/year
49. 149A++
    Fuji Electric ROG14KGCA/RSG14KGTE

    4.2 kW · SEER 8.3 · 177 kWh/yr
    €50/year
50. 150A++
    Hisense 2AMW42U4RGC

    4.1 kW · SEER 8.1 · 177 kWh/yr
    €50/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