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Quietest 3.5 kW (12,000 BTU) air conditioners in the UK: 15 models that pass 37 dB at 4 m

ElectriQ EIQ 3.5 kW (EIQ-12WMINVEX-V5) is the quietest of these 15 that pass at 4 m, at ≈30.0 dB(A). If the outdoor unit will sit closer than 4 m to a neighbour's window, use the 4 m column before you shortlist.

computed

bar · 3.5 kW (12,000 BTU) kW · Sound pressure at 4 m, low to high, among passes · n=15 · 25 Sep 2026

Ranked models

15 models match this list. Sound pressure at 4 m, low to high, among passes.

3.5 kW (12,000 BTU) · Sound pressure at 4 m, low to high, among passes. £ per summer uses 26.32p/kWh at 400 hours.
Rank	Model	LwA dB(A)	3 m dB(A)	SEER	£ at 400 h	Refrigerant	Observed price
1	ElectriQ EIQ 3.5 kW (EIQ-12WMINVEX-V5)	50.0	32.5	8.6	£42.85	R290	—
2	Gree GFH 3.5 kW (GFH12CAXB-S6DNA1C/O)	56.0	38.5	6.5	£56.69	R32	—
3	Gree GKH 3.5 kW (GFH12CAXB-S6DNA1C/O)	56.0	38.5	7.1	£51.90	R32	—
4	Gree GTH 3.5 kW (GFH12CAXB-S6DNA1C/O)	56.0	38.5	7.2	£51.18	R32	—
5	Gree GUD 3.5 kW (GUD35W1/NHA-S / GUD35P1/A-S)	56.0	38.5	6.5	£56.69	R32	—
6	Gree GUD 3.5 kW (GUD35W1/NHA-S / GUD35T1/A-S)	56.0	38.5	7.1	£51.90	R32	—
7	Gree GUD 3.5 kW (GUD35W1/NHA-S / GUD35ZD1/A-S)	56.0	38.5	7.2	£51.18	R32	—
8	Gree GUD 3.5 kW (GUD35W1/NHA-S / GUD35T1/A-S)	56.0	38.5	7.1	£51.90	R32	—
9	Gree GUD 3.5 kW (GUD35W1/NHA-S / GUD35PS1/A-S)	56.0	38.5	6.5	£56.69	R32	—
10	Gree GUD 3.5 kW (GUD35W1/NHA-S / GUD35ZD1/A-S)	56.0	38.5	7.2	£51.18	R32	—
11	Haier AM 3.5 kW (AM12AA1TAA)	56.0	38.5	2.6	£141.72	R290	—
12	Fujitsu Wall 3.4 kW (AOYG12KXCA / ASYG12KXCA)	57.0	39.5	8.5	£42.11	R32	—
13	Fujitsu Wall 3.4 kW (AOYG12KXCA / ASYG12KXCA)	57.0	39.5	8.5	£42.11	R32	—
14	Fujitsu Wall 3.5 kW (AOYG12LZCAN)	57.0	39.5	8.6	£42.85	R410A	—
15	Hisense QH 3.5 kW (2AMW35U4RGC)	57.0	39.5	8.1	£45.49	R32	—

EPREL manufacturer-declared registrations · snapshot 25 Sep 2026 · n=15 · Sound pressure at 4 m, low to high, among passes; 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

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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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