LG is better known for televisions and fridges, which makes some people wary of its air conditioning. That’s understandable but not quite fair. LG has a full residential and commercial line-up in the UK, built-in Wi-Fi across its wall units and one of the more generous compressor warranties around.
This LG aircon review covers the current DUALCOOL and ARTCOOL wall-mounted ranges using the figures on LG’s UK website, plus our view as installers who fit several leading brands. We’ll be honest about where LG is strong and where we’d look elsewhere.
LG’s UK wall-mounted range
| Range (2.5 kW model) | Energy class (cool / heat) | SEER / SCOP | Lowest stated sound | Wi-Fi |
|---|---|---|---|---|
| DUALCOOL Standard Plus PC09SQ | A++ / A+ | 7.0 / 4.0 | 19 dB(A) cooling; 27 dB(A) heating | ThinQ built in |
| DUALCOOL Deluxe H09S1D | A+++ / A++ | Not stated on the page | 19 dB(A) cooling | ThinQ built in |
| DUALCOOL Premium H09S1P | A+++ (overall grade) | Not stated on the page | 19 dB(A) cooling | ThinQ built in |
| ARTCOOL Mirror AC09BH | A++ / A+ | 7.00 / 4.0 | 19 dB(A) cooling; 27 dB(A) heating | ThinQ built in |
| ARTCOOL Gallery A09GA1 | See LG data sheet | See LG data sheet | See LG data sheet | See LG data sheet |
SCOP is for the average climate. The Deluxe and Premium are listed with R32. Note that LG’s pages give the lowest heating sound as 27 dB(A) on the low setting for the Standard Plus and ARTCOOL Mirror, noticeably higher than the 19 dB(A) cooling figure. On the Deluxe and Premium pages the sound figures are labelled as sound power, which isn’t directly comparable with the sound pressure other brands quote, so treat them with care.
DUALCOOL Standard Plus and Deluxe
The Standard Plus is LG’s value unit. A++ for cooling with a SEER of 7.0 is a solid result. Heating is the weaker side at A+ (SCOP 4.0), so it’s best for rooms used mainly in summer.
The Deluxe moves cooling up to A+++ and heating to A++, adds an ioniser and allergy filter, and keeps ThinQ Wi-Fi. For many bedrooms and living rooms it’s the LG we’d look at first.
DUALCOOL Premium: LG’s feature-led unit
The DUALCOOL Premium has LG’s Dual Vane airflow, human body detection, energy monitoring and display, a kW Manager to cap power use, auto cleaning, a humidity sensor for dehumidifying and a low-noise mode. If you like seeing what your system uses, the energy monitoring is useful, and it pairs well with time-of-use tariffs (see /air-conditioning-time-of-use-tariffs/).
One detail we like: the 3.5 kW Premium page states a 5-year security update period from launch for the connected features. Few manufacturers publish that, and it matters for anything on your home network.
ARTCOOL: when looks come first
ARTCOOL is LG’s design range. The ARTCOOL Mirror has a mirror-style front panel, UVnano and an ioniser. The ARTCOOL Gallery goes further: the front works as a frame for a photo or artwork, so the unit can look like a picture on the wall. It’s a genuine alternative to the Daikin Emura or Toshiba Haori if you want something different.
Both ARTCOOL ranges keep LG’s ThinQ app and the same basic installation as any other wall unit, so the design choice doesn’t limit where the outdoor unit goes or how the pipework runs. The difference is in what you see on the wall and, sometimes, in the efficiency.
Check the efficiency of the exact ARTCOOL model before choosing. The Mirror 2.5 kW is A+ for heating, so for a room you’ll heat all winter a Deluxe may serve you better, even if it looks more conventional.
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What we like
- ThinQ Wi-Fi listed on every DUALCOOL and ARTCOOL Mirror unit we checked, with the mature LG ThinQ app.
- A+++ cooling on the Deluxe and Premium.
- Distinctive design options in ARTCOOL Mirror and Gallery.
- Energy monitoring and a kW Manager on the Premium.
- A 10-year compressor parts warranty on single split systems (see below).
What to weigh up
- Heating is the weaker side on the Standard Plus and ARTCOOL Mirror (A+, SCOP 4.0).
- Heating noise is higher than cooling on the published figures: 27 dB(A) on low versus 19 dB(A). Light sleepers using heat at night should compare carefully.
- Patchy published data. Some LG UK pages omit SEER, SCOP or refrigerant, or label sound figures inconsistently. We check the data sheet for your exact model before you commit.
- Servicing terms. LG’s warranty table lists servicing as “biannual”. Ask what that means for your system before you buy.
LG warranty in the UK
LG’s UK business warranty page sets out the HVAC terms:
| System | Basic | Extended | Compressor |
|---|---|---|---|
| Single split (RAC) | 3 years | 5 years | 10 years, parts only |
| Multi split | 3 years | 5 years | Not separately stated |
| Multi V VRF | 3 years | 5 years | Not separately stated |
The 5-year cover runs from commissioning if the system is installed by an LG-trained installer who holds a valid F-Gas certificate. LG says claims from incorrect installation, poor maintenance or misuse fall outside the product warranty. Labour cover isn’t stated for every item, and “parts only” on the compressor means labour and refrigerant after the main warranty would be chargeable. We don’t claim LG training status here: we confirm on your quote which LG terms apply to your installation. See /air-conditioning-warranty-guide/.
Who LG suits
- Smart-home users, especially if you already use ThinQ for other LG appliances.
- Cooling-led rooms on a budget: Standard Plus.
- Design-conscious rooms where the unit is on show: ARTCOOL.
- Energy-watchers: DUALCOOL Premium with monitoring and kW Manager.
- Businesses considering LG’s Multi V VRF. See /lg-air-conditioning/ and /vrf-air-conditioning/.
What we’d check at a site survey
- Heating demand. If you’ll heat through winter, we compare the Deluxe against other brands’ A+++ heating models.
- Bedroom noise. We look at the low-fan heating figure, not just the quietest cooling number.
- Wi-Fi strength at the indoor unit, so ThinQ connects reliably.
- Servicing plan to keep the warranty valid. See /air-conditioning-maintenance-contracts/.
- Outdoor unit position, pipe route and electrics, all included in our fixed-price quote.
Quick answers
Is LG a good air conditioning brand?
Yes, with caveats. LG offers built-in ThinQ Wi-Fi, A+++ cooling on the DUALCOOL Deluxe and Premium and a 10-year compressor parts warranty on single splits. Heating efficiency and heating noise on the entry models are weaker than some rivals.
What warranty does LG give on air conditioning?
LG’s UK page lists 3 years basic and 5 years extended for single split systems installed by an LG-trained, F-Gas certified installer, plus a 10-year compressor warranty that covers parts only.
Do LG air conditioners have Wi-Fi?
The current DUALCOOL Standard Plus, Deluxe and Premium and the ARTCOOL Mirror list LG ThinQ Wi-Fi, so you can control them from the ThinQ app.
Which LG model is quietest?
LG lists 19 dB(A) at the lowest cooling setting across its 2.5 kW wall units. For heating, the Standard Plus and ARTCOOL Mirror list 27 dB(A) on low.
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This guide is general information, checked against the sources linked on 30 October 2026. It isn’t legal, tax or financial advice. Rules, grants and product ranges change, so check the current position before you rely on it.