LG
LG DUALCOOL Deluxe 3.5kW Air Conditioning Unit (Single Split)
LG DUALCOOL Deluxe 3.5kW Air Conditioning Unit (Single Split)
Changed your mind? You pay the return postage. Faulty, damaged or wrong items are on us.
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Want us to fit it instead? We'll quote separately.
Fitted for you
Send us photos, a short video walk-round and your room sizes, and we'll come back with a quote. If what we find on the day doesn't match your photos, we'll agree any change with you before we start, and you can cancel instead.
- F-Gas certified: Refcom REF1023722, Kinergy Solutions Ltd
- 20+ years in the trade
Availability: made to order. We'll confirm availability and your delivery date within 2 working days of your order, before we order your kit; we'll agree a fitting date with you after you accept the quote.
How buying with installation works · Get a quote from photos
The LG DUALCOOL Deluxe is LG's flagship wall-mounted air conditioner, built around the DUAL Inverter compressor for fast, quiet, low-cost cooling, and efficient heating in winter.
- 3.5kW (12,000 BTU), ideal for living rooms and open-plan spaces up to 30m²
- A+++ cooling and A++ heating efficiency, whisper-quiet from 19 dB(A)
- Wi-Fi control via the LG ThinQ app
- Active Energy Control & 4-way air swing
- LG's UK terms include a 10-year warranty on the compressor (parts only) for single splits, subject to LG's conditions including regular servicing.
Supply only (installer F-Gas details required). Want it fitted? Ask for a quote in the Fitted for you section on this page.
Specifications: LG DUALCOOL Deluxe 3.5 kW (H12S1DA.NS1 + H12S1DA.U12)
| Indoor unit | H12S1DA.NS1 |
|---|---|
| Outdoor unit | H12S1DA.U12 |
| Refrigerant | R32 (GWP 675) |
| Cooling capacity | 3.5 kW rated (min 0.89 kW, max 4.2 kW) |
| Heating capacity | 4.0 kW rated (min 0.65 kW, max 5.4 kW) |
| Maximum heating capacity at -7°C | 3.6 kW |
| SEER (energy class, cooling) | 8.5 (A+++) |
| SCOP, average climate (energy class, heating) | 4.6 (A++) |
| Refrigerant charge | 0.8 kg pre-charged (0.540 t CO2e) |
| Pipe length with no extra charge | 12.5 m |
| Additional refrigerant charge | 20 g/m |
| Indoor sound pressure, cooling (sleep / low / medium / high / SH) | 19 / 27 / 35 / 40 / 47 dB(A) |
| Indoor sound pressure, heating (low / medium / high / SH) | 27 / 35 / 40 / 48 dB(A) |
| Indoor sound power | 60 dB(A) |
| Outdoor sound pressure, rated (cooling / heating) | 49 / 51 dB(A) |
| Outdoor sound power, rated | 65 dB(A) |
| Indoor unit dimensions (W x H x D) | 895 x 307 x 235 mm |
| Indoor unit net weight | 11.0 kg |
| Outdoor unit dimensions (W x H x D) | 717 x 495 x 230 mm |
| Outdoor unit net weight | 25.1 kg |
| Power supply | 1 phase, 220 to 240 V, 50 Hz |
| Circuit breaker | 15 A |
| Outdoor operating range, cooling | -15°C to 48°C (dry bulb) |
| Outdoor operating range, heating | -15°C to 24°C (dry bulb) |
| Pipe sizes (liquid / gas) | 6.35 mm / 9.52 mm |
| Pipe length (min / standard / max) | 3 / 7.5 / 20 m |
| Maximum height difference | 10 m |
Specifications from LG's datasheet for this model. Energy class scale A+++ to D. Sound pressure is not a value declared on the Eurovent programme.
Questions and answers
Can I fit it myself?
No. This unit contains refrigerant, so it has to be connected and commissioned by an F-gas certified company. We can fit it for you anywhere in the UK, or supply it to your own F-gas certified company.
Do you fit it?
Yes, anywhere in the UK. Send us photos, a short video walk-round and your room sizes, and we'll come back with a quote. Your fitted quote includes travel. If what we find on the day doesn't match your photos, we'll agree any change with you before we start, and you can cancel instead.
Does it heat as well as cool?
Yes. It's a heat pump that heats as well as cools. Heating output: 4.0 kW rated (0.65 kW to 5.4 kW).
How long for delivery?
We confirm the delivery date in writing once your order is paid.
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LG DUALCOOL Deluxe 3.5kW Air Conditioning Unit (Single Split)
£1,170.00