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LG Dual Split Wall Air Conditioners

The LG dual split wall air conditioner serves two rooms from a single outdoor unit, thanks to Dual Inverter technology. The Libero Smart 9+12 series is among the best sellers and prices start around 895 euros.
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Which LG dual split is right for your two rooms?

An LG dual split wall system serves two separate rooms from a single outdoor unit and two independent indoor units, one per room: it cools in summer and heats in winter with a heat pump, with Dual Inverter technology and R-32 refrigerant. It is the right choice when you want a single machine on the balcony but separate controls for the bedroom and living room. The best-selling combination is the Libero Smart 9+12 with the MU2R15 outdoor unit, and prices start around 895 euros. Browse the full LG range or all wall air conditioners.

Two warm rooms, but only one balcony

The bedroom and study that become unliveable in summer, or the living room and the kids' room on the same floor. Fitting two monosplit units means two outdoor units and twice as many holes in the facade, which the building often will not allow. The dual split solves exactly that: a single outdoor unit, two separate indoor units, each room at the temperature it prefers.

The most popular LG series

The Libero Smart series is the most chosen for dual splits, with built-in Wi-Fi and excellent efficiency: it comes in 7+9, 9+9, 9+12 and 12+12 combinations. The Dualcool adds advanced features and quieter running, while the Artcool Mirror brings a mirror design for those who care about looks. All use R-32 refrigerant and Dual Inverter technology and run as a heat pump.

Which combinations per room

With a dual split you choose the power of each indoor unit by room, while the outdoor unit (MU2R15 or MU2R17) must handle the sum of both.

  • 9+9 BTU: two bedrooms or studies up to about 25 sqm each;
  • 9+12 BTU: a bedroom plus a mid-size living room, the most chosen combination;
  • 12+12 BTU: two living rooms or spaces up to about 35 sqm each;
  • 7+9 BTU: two small rooms, such as a kids' room and a study.

How much does it cost to run?

This is the question that stops almost everyone. Dual Inverter technology modulates the power with two rotors instead of switching on and off, so it uses far less than two old units; with R-32 refrigerant and energy classes up to A+++, the bill stays under control even with both rooms served all afternoon.

It heats in winter too

Because it is a heat pump, the same dual split warms both rooms in the mid-seasons within minutes, often for less than electric heaters running in two rooms. For hot water instead, see the heat-pump water heaters.

LG and the connected home

With built-in Wi-Fi and the LG ThinQ app you control each indoor unit independently from your phone or by voice: turn on just the bedroom in the evening and add the living room when you get home. Find all compatible models among the smart air conditioners for Alexa and Google Home.

LG versus other brands

Against premium brands like Daikin and Mitsubishi Electric, LG offers Dual Inverter technology and a compressor warranty of up to 10 years at a more accessible price: it is the number one brand in Germany and very strong in France precisely for this balance of technology and efficiency. To compare, also look at Samsung, Hisense and Haier.

Incentives, warranty and support

Buying a high-efficiency heat-pump unit may qualify for energy-renovation incentives depending on the schemes in force: keep your invoice and paperwork and check the current conditions. Every LG dual split ships with the official manufacturer warranty, often up to 10 years on the compressor, delivery across the country and our help choosing the sizes and the right outdoor unit. If a single room is enough, look at a monosplit wall unit, if there are three rooms see the trial split wall system, and check the deals on all air conditioners.

Frequently asked questions

Is a dual split or two separate monosplit units better?
If the two rooms are close and you want a single outdoor unit on the balcony, the LG dual split wins: fewer holes in the facade, one maintenance visit and often the building's approval. Two monosplit units only make sense if the rooms are far apart.
Can I run just one room at a time?
Yes, the two indoor units are independent: turn on just the bedroom in the evening and add the living room whenever you like. The LG outdoor unit modulates power to the active indoor units, so nothing is wasted.
Which LG combination for a bedroom and a living room?
The most chosen combination is 9+12 with the MU2R15 outdoor unit: 9000 BTU for the bedroom up to about 25 sqm and 12000 BTU for the living room up to about 35 sqm. We help you match the sizes to your rooms.
Does an LG dual split heat in winter too?
Yes, it is a heat pump: in the mid-seasons it warms both rooms within minutes, often for less than electric heaters running in two rooms.
How long is the LG compressor warranty?
On many LG models the compressor warranty runs up to 10 years, on top of the standard warranty on the unit. It is one reason LG is the best-selling brand in Germany: always keep the invoice to activate it.
Can I get an incentive for the purchase?
Often yes: a high-efficiency heat-pump unit may qualify for energy-renovation incentives. Keep your invoice and proof of payment and check the conditions in force at the time of purchase.
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