Our verdict
The DualCool Standard Plus is the plain white LG that UK installers quote in volume, and it is the value pick among big-brand wall splits. For £652 to £823 a unit, hundreds less than an equivalent Artcool or a premium Daikin or Mitsubishi, you get the same DUAL Inverter platform, a 19 dB(A) sleep mode that matches the quietest residential splits, reverse-cycle heating, and ThinQ Wi-Fi with energy monitoring as standard even on this base tier. It holds a steady temperature without the hunting and surging of cheaper compressors, and the 10-year compressor warranty backs the part that matters most.
It is not the efficiency leader. A++ cooling and A+ heating are a step below the A+++ of the best small Daikin, Mitsubishi and Panasonic splits and of LG's own newer Deluxe H-series, and there is no UVnano or ioniser air-hygiene kit at this tier. The headline warranty covers the compressor only, with shorter parts cover, and independent long-term owner evidence is still thin for this exact series. If the last few efficiency points or air purification matter, spend more; if you want proven LG engineering at the keenest big-brand price, this is the one to shortlist.
What the DualCool Standard Plus is and who it suits
The DualCool Standard Plus is a wall-mounted R32 split system: a slim indoor unit paired with an outdoor condenser, sold in the PC-SQ series across four sizes from 2.5 kW to 6.6 kW of cooling. It is reverse cycle, so the same unit heats in winter at a fraction of the cost of a plug-in electric heater. R32 is the lower-impact refrigerant now standard on quality splits, and by law any work on the sealed circuit needs an F-Gas certified engineer, so this is a fitted product bought through an installer, not something you order and plug in.
Within LG's range it is the sensible middle path. Below it sits the DualCool Pro, a cheaper online-retail variant with weaker efficiency and shorter cover. Above it, the newer Deluxe H-series adds A+++ cooling, Dual Vane airflow and UVnano air hygiene for a few hundred pounds more, and the Artcool wraps the same DUAL Inverter platform in a designer fascia at a clear premium. The Standard Plus has been on sale for several years and the H-series now sits above it, which is exactly why its pricing is keen: it is the proven, widely stocked pick while the generation runs out its cycle.
It suits the buyer who has seen an LG quote come in a few hundred pounds under a Daikin or Mitsubishi and wants to know if it is a false economy. It is not. The 2.5 kW size covers a bedroom or small office, the 3.5 kW an average living room, and the larger sizes open-plan spaces, all with the same 19 dB(A) sleep mode and the ThinQ app with energy monitoring included. Choose it if value, quiet and app control matter more than the last few efficiency points or how the unit looks on the wall.
Full specifications
- System type
- Wall-mounted single split, reverse cycle (heats as well as cools)
- Models and sizes
- PC09SQ 2.5 kW, PC12SQ 3.5 kW, PC18SQ 5.0 kW, PC24SQ 6.6 kW cooling
- Heating output
- 3.3 kW rated on the 2.5 kW size, 4.0 kW on the 3.5 kW size
- Efficiency
- A++ cooling / A+ heating; SEER 7.0 and SCOP 4.0 on the 2.5 kW, SEER 6.6 on the 3.5 kW
- Refrigerant
- R32 (GWP 675), 700 g charge on the 2.5 kW
- Indoor noise
- 19 to 41 dB(A), with 19 dB(A) in sleep mode
- Indoor / outdoor unit size
- 837 x 308 x 189 mm indoor, 717 x 495 x 230 mm outdoor (3.5 kW)
- Smart control
- LG ThinQ Wi-Fi with energy monitoring, Alexa and Google voice control
- Warranty
- 10-year DUAL Inverter compressor; parts from around 3 years, subject to F-Gas install and registration
Pros
- +Strong value: a big-brand split at £652 to £823 per unit, roughly £600 to £900 less than an Artcool of the same output
- +Quiet where it counts, down to 19 dB(A) in sleep mode, easily quiet enough for a bedroom
- +DUAL Inverter compressor holds temperature steadily and keeps running costs down, with a 10-year compressor warranty behind it
- +ThinQ Wi-Fi, energy monitoring and Alexa and Google voice control come as standard, not as paid extras
Cons
- −A++ cooling and A+ heating: solid, but below the A+++ of the best rivals and of LG's own Deluxe H-series
- −No air-hygiene extras: UVnano and the ioniser are reserved for the dearer Deluxe and Artcool Mirror
- −The 10-year figure is compressor-only; parts cover is around 3 years and depends on registration and an F-Gas install
- −This PC-SQ generation is late in its cycle, with the newer H-series above it, and little independent long-term UK owner feedback exists yet
What it costs to buy and run
Unit prices are the cheapest of any big-brand split: about £652 for the 2.5 kW and £823 for the 3.5 kW from UK trade suppliers. Add standard installation labour of roughly £385 to £485 and a straightforward single-room install of a 2.5 or 3.5 kW lands around £1,100 to £1,500 supplied and fitted, rising to £1,800 to £2,500 or more for the larger sizes or awkward pipe runs. Qualifying installations can attract 0% VAT. As with any fitted split, the only accurate figure is a quote, so get two or three from local F-Gas registered installers before you budget.
Running costs are modest. At the July 2026 Ofgem price cap unit rate of 26.11p per kWh, the 3.5 kW size cooling flat out draws about 1.1 kW, so roughly 28p an hour, dropping to a few pence once the room reaches temperature and the DUAL Inverter modulates down. In heating, a SCOP of 4.0 means around four units of heat for every unit of electricity. As a reverse-cycle air-to-air heat pump it may qualify for the £2,500 Boiler Upgrade Scheme grant in England and Wales, but only if it replaces a fossil-fuel heating system and is fitted by an MCS-certified installer; comfort cooling added alongside a gas boiler does not qualify, and it is separate from the larger £7,500 air-to-water grant. Prices and rates correct as of August 2026; the energy price cap changes quarterly, so check current rates before budgeting.
LG DualCool: your questions answered
Is the LG DualCool any good? +
Yes, with one caveat. The Standard Plus pairs a proven DUAL Inverter compressor, a bedroom-quiet 19 dB(A) sleep mode and ThinQ Wi-Fi with the keenest big-brand pricing in its class, and a 10-year compressor warranty backs it. The caveat is efficiency: A++ cooling and A+ heating are good rather than class-leading, so if the lowest possible running cost is the priority, an A+++ split does more for more money.
LG DualCool vs Artcool: what is the difference? +
The same machine in different clothes. Both run LG's DUAL Inverter compressor, R32 refrigerant and the ThinQ app, and efficiency is close at like-for-like sizes. The Artcool premium, typically £600 to £900 more per unit, buys the Gallery photo-frame or Mirror glass fascia, and on the Mirror some air-hygiene extras. If you do not mind a plain white unit on the wall, the DualCool is the same LG for hundreds less.
Standard Plus, Pro or Deluxe: which DualCool should I buy? +
The Standard Plus is the balanced pick: installer-channel stock, SEER up to 7.0, 19 dB(A) sleep mode and full ThinQ control. The Pro is the cheaper online-retail cousin, but its SEER of 6.1, 25 dB(A) minimum noise and shorter cover make the saving a false one for most homes. The Deluxe H-series is the step up: A+++ cooling, Dual Vane airflow, UVnano air hygiene and a humidity sensor, worth it if you will run the unit daily through summer or care about air quality.
How much does an LG DualCool cost supplied and fitted? +
Budget roughly £1,100 to £1,500 for a 2.5 or 3.5 kW Standard Plus on a straightforward single-room install, based on unit prices of £652 to £823 plus standard labour, and £1,800 to £2,500 or more for larger sizes or longer pipe runs. Those are guide figures correct as of August 2026, so get two or three quotes from local F-Gas registered installers for your own home.
Is the LG DualCool quiet enough for a bedroom? +
Yes. Its sleep mode runs at 19 dB(A), which matches the quietest residential wall splits from any brand and sits below the level of a whisper. Normal cooling spans 19 to 41 dB(A) depending on fan speed, and because the inverter compressor modulates rather than switching on and off, there is no start-stop clunk to wake you at 3am.
Can I get the £2,500 grant for an LG DualCool? +
Only in specific circumstances. From 28 April 2026 a £2,500 Boiler Upgrade Scheme grant for air-to-air heat pumps applies in England and Wales. The DualCool is reverse cycle so it heats as well as cools, but it must replace a fossil-fuel heating system and be fitted by an MCS-certified installer to qualify; adding one purely for comfort cooling alongside a gas boiler does not. Check GOV.UK and Ofgem for the current rules before relying on it.
Alternatives worth a look
Perfera FTXM-A
★★★★★ ★★★★★ 4.52.0–7.1 kW · up to A+++ · from 19 dB(A) · R32
supplied & fitted, 3.5 kW single split (standard install) from £2,034Mitsubishi Electric MSZ-LN
★★★★★ ★★★★★ 4.52.5–6.1 kW · up to A+++ · from 19 dB(A) · R32
supplied & fitted, 2.5 kW (LN25) from £2,000Stylish FTXA
★★★★★ ★★★★★ 4.42.0–5.0 kW · up to A+++ · from 19 dB(A) · R32
supplied & fitted, 2.5 kW, standard 3-5 m install £2,146Guides to read next
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