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R32 12.5 kW (≈43,000 BTU) air conditioners in the UK: 63 models

Olimpia Splendid OSSENEH 12.3 kW (OS-CANMH42EI / OS-SENEH09EI) leads this R32 list SEER 6.4, and 63 models at 12.5 kW (≈43,000 BTU) use R32. If sound matters more than the refrigerant, sort by the outdoor dB column.

computed

bar · 12.5 kW (≈43,000 BTU) kW · R32 only, then outdoor sound power · n=63 · 25 Sep 2026

Ranked models

63 models match this list. R32 only, then outdoor sound power.

12.5 kW (≈43,000 BTU) · R32 only, then outdoor sound power. £ per summer uses 26.32p/kWh at 400 hours.
RankModelLwA dB(A)3 m dB(A)SEER£ at 400 hRefrigerantObserved price
1Olimpia Splendid OSSENEH 12.3 kW (OS-CANMH42EI / OS-SENEH09EI)65.047.56.4£202.34R32—
2LG UM 12 kW (UU42WRU30)67.049.55.5£229.70R32—
3LG UM 12 kW (UU43WRU30)67.049.55.6£225.60R32—
4LG UT 12 kW (UU43WRU30)67.049.56.1£207.11R32—
5LG UV 12 kW (UU42WRU30)67.049.55.5£229.70R32—
6LG UV 12 kW (UU43WRU30)67.049.55.5£229.70R32—
7LG UM 12 kW (UUD1U30)69.051.55.6£225.60R32—
8LG UM 12 kW (UUD3U30)69.051.55.6£225.60R32—
9Midea MTIU 12.3 kW (M5O-42FN8-Q)69.051.55.8£223.27R32—
10Mitsubishi Electric Premium 12 kW (MXZ-6F120VF2)69.051.56.8£185.79R32—
11Mitsubishi Electric Premium 12 kW (MXZ-6F120VF3)69.051.56.8£185.79R32—
12Olimpia Splendid OSSEDDH 12.4 kW (OS-CEMEH42EI)69.051.55.9£221.27R32—
13Olimpia Splendid OSSEMEH 12.4 kW (OS-CEMEH42EI)69.051.56.1£214.01R32—
14Olimpia Splendid OSSENEH 12.3 kW (OS-CANMH42EI / OS-SENEH09EI)69.051.56.1£212.29R32—
15Olimpia Splendid OSSENEH 12.3 kW (OS-CANMH42EI / OS-SENEH09EI)69.051.56.4£202.34R32—
16Olimpia Splendid OSSENEH 12.3 kW (OS-CANMH42EI / OS-SENEH09EI)69.051.56.3£205.55R32—
17Olimpia Splendid OSSENEH 12.3 kW (OSCANMH42EI)69.051.56.6£196.20R32—
18Olimpia Splendid OSSENEH 12.4 kW (OS-CEMEH42EI / OS-SENEH09EI)69.051.56.1£214.01R32—
19Olimpia Splendid OSSENEH 12.4 kW (OS-CEMEH42EI / OS-SENEH09EI)69.051.56.1£214.01R32—
20Argo X 12 kW (X3MIECO120SH)70.052.56.1£207.11R32—
21ElectriQ IQOOL 12.2 kW (IQOOL-4MS12K12K12K12K-EX)70.052.56.1£210.56R32—
22ElectriQ IQOOL 12.2 kW (IQOOL-5MS12K12K12K12K12K-EX)70.052.56.1£210.56R32—
23ElectriQ IQOOLC 12.2 kW (IQOOL-C3MSC5SPM-EX)70.052.56.1£210.56R32—
24Gree GWH 11.8 kW (GWHD42NK6QO)70.052.57.2£172.54R32—
25Gree GWH 11.8 kW (GWHD42NK6ZO)70.052.57.2£172.54R32—
26Hitachi RCI 11.9 kW (RAS-5HRC2E)70.052.56.4£195.75R32—
27Hitachi RCI 11.9 kW (RAS-5HVRC2E)70.052.56.6£189.82R32—
28Hitachi RPC 11.9 kW (RAS-5HRC2E)70.052.55.9£212.34R32—
29Hitachi RPC 11.9 kW (RAS-5HVRC2E)70.052.56.1£205.38R32—
30Hitachi RPI 11.9 kW (RAS-5HRC2E)70.052.55.9£212.34R32—
31Hitachi RPI 11.9 kW (RAS-5HVRC2E)70.052.56.1£205.38R32—
32Hitachi RPIH 11.9 kW (RAS-5HRC2E / RPIH-5.0FSRE)70.052.56.8£184.24R32—
33Hitachi RPIH 11.9 kW (RAS-5HRC2E / RPIH-5.0FSRE)70.052.56.8£184.24R32—
34Hitachi RPIH 11.9 kW (RAS-5HVRC2E)70.052.57.1£176.46R32—
35Midea MSAGAU 12.3 kW (M5OE-42HFN8-Q(B))70.052.56.6£196.20R32—
36Nørdis NDIOE+NDIOP+NDIS 12.2 kW (FMA-42I5HD/DVO)70.052.56.1£210.56R32—
37Nørdis / Nordis NDIOE+NDIOP+NDIS 12.2 kW (FMA-42I5HD/DVO)70.052.56.1£210.56R32—
38Samsung AC 12 kW (AC120RXADKG)70.052.56.0£210.56R32—
39Samsung AC 12 kW (AC120RXADNG / AC120RN4DKG)70.052.56.0£210.56R32—
40Samsung AC 12 kW (AC120RXADNG / AC120RNCDKG)70.052.55.9£214.13R32—
41Samsung AC 12 kW (AC120RXADNG / AC120RNMDKG)70.052.55.8£217.82R32—
42Nørdis NIC 12.1 kW (NOA-42)71.053.56.1£208.83R32—
43Nørdis / Nordis NIC 12.1 kW (NOA-42)71.053.56.1£208.83R32—
44Haier AB 12.4 kW (1U125S2SN3FA-H)72.054.56.1£214.01R32—
45Haier AB 12.4 kW (1U125S2SN3FB-H)72.054.56.1£214.01R32—
46Haier AB 12.5 kW (1U125S2SN3F)72.054.56.1£215.74R32—
47Haier AC 12.3 kW (1U125S2SN3F)72.054.56.1£212.29R32—
48Haier AC 12.3 kW (1U125S2SN3FA)72.054.56.1£212.29R32—
49Haier AC 12.3 kW (1U125S2SN3FA-H)72.054.56.1£212.29R32—
50Haier AC 12.4 kW (1U125S2SN3FB-H)72.054.56.1£214.01R32—
51Haier AD 12.4 kW (1U125S2SN2F)72.054.55.9£221.27R32—
52Haier AD 12.4 kW (1U125S2SN2FA)72.054.55.9£221.27R32—
53Haier AD 12.4 kW (1U125S2SN3F)72.054.56.2£210.56R32—
54Haier AD 12.4 kW (1U125S2SN3FA)72.054.56.2£210.56R32—
55Haier AD 12.4 kW (1U125S2SN3FA-H)72.054.56.2£210.56R32—
56Haier AD 12.4 kW (1U125S2SN3FB-H)72.054.56.2£210.56R32—
57Midea MCD 12.1 kW (MOD30U-42HFN8-Q(GA))72.054.56.1£208.83R32—
58Haier AS 12.5 kW (5U125S2SN1FA-H)73.055.57.1£185.35R32—
59Hisense AUC 12.1 kW (AUW125U4RW8)73.055.57.5£169.85R32—
60Hisense AUV 12.1 kW (AUW125U4RW8)73.055.56.5£195.98R32—
61Hisense AUV 12.1 kW (AUW125U6RW8)73.055.56.5£195.98R32—
62Midea MTI 12.4 kW (MOU-42FN8-QD0)73.055.56.1£214.01R32—
63Midea MTI 12.1 kW (MOD30U-42HFN8-Q(GA))75.057.56.1£208.83R32—

EPREL manufacturer-declared registrations · snapshot 25 Sep 2026 · n=63 · R32 only, then outdoor sound power; noise via contract_engine MCS 020a Q=2, no barrier · updated 25 Sep 2026 · version 1.0.0 · CSV of the values on this page

How this page was calculated

If the calculated sound pressure level at all assessment positions is equal to or lower than 37.0 dB(A) then the heat pump will comply with the Permitted Development noise limit

Other lists at this capacity

Better than a best-of roundup with no figures: every row is a registered number and a link to the model card.

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