LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW
Available to order — dispatched on the lead time shown below.
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Retail prices include VAT.
The LG Multi V S ARUN040GSS4 is a premium, compact Mini VRF multi-split heat pump system engineered for luxury UK residences, prestige penthouses, and commercial retail units. Operating on a single outdoor unit, it supports up to six independently controlled indoor evaporators, delivering an impressive 12.1kW cooling and 12.5kW heating capacity. Featuring LG’s 4th generation inverter scroll compressor, smart load control, and vapour injection, it maintains outstanding heating output in UK sub-zero winter temperatures down to -20°C. Ocean Black Fin treatment protects internal heat exchanging elements from pollution and moisture damage. The high-performance system accommodates expansive piping layouts and connects with LG's full architectural indoor range, including 4-way cassettes, slim duct units, and designer wall units. Compatibility with the LG ThinQ application and central BMS systems guarantees smart operational monitoring. This advanced Mini VRF system mandates specialist installation by certified F-Gas heating engineers.
Need it installed?
We'll match you with a local HVAC engineer.
Smart-home ready
Connects natively with the systems below — control by app or voice.
- Free UK mainland delivery on in-stock units
- Manufacturer warranty included
- 14-day returns
Technical documents & videos
More from LG →Official LG manual
The manufacturer's PDF for this model is being sourced and will be downloadable here.
Full Specifications
Physical dimensions
Exact dimensions for this model are being confirmed with LG — ask us and we will send the cut sheet with mounting and clearance figures.
Description
The LG Multi V S ARUN040GSS4 is a premium, compact Mini VRF multi-split heat pump system engineered for luxury UK residences, prestige penthouses, and commercial retail units. Operating on a single outdoor unit, it supports up to six independently controlled indoor evaporators, delivering an impressive 12.1kW cooling and 12.5kW heating capacity. Featuring LG’s 4th generation inverter scroll compressor, smart load control, and vapour injection, it maintains outstanding heating output in UK sub-zero winter temperatures down to -20°C. Ocean Black Fin treatment protects internal heat exchanging elements from pollution and moisture damage. The high-performance system accommodates expansive piping layouts and connects with LG's full architectural indoor range, including 4-way cassettes, slim duct units, and designer wall units. Compatibility with the LG ThinQ application and central BMS systems guarantees smart operational monitoring. This advanced Mini VRF system mandates specialist installation by certified F-Gas heating engineers.
Compare similar units
Side-by-side specs for other multi-split system ac in a similar BTU range.
Common questions about the LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW
How many BTU is the LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW?
The LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW has a cooling capacity of 41,000 BTU, suitable for Up to 6 rooms (up to 140m² combined).
What room size is the LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW suitable for?
The LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW is recommended for rooms Up to 6 rooms (up to 140m² combined).
Can I install the LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW myself?
No — this unit requires professional installation by a qualified F-gas engineer. Use our Find an Installer service to get matched with a local HVAC professional.
Is the LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW smart-home compatible?
Yes — the LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW supports LG ThinQ, Amazon Alexa, Google Assistant for app and voice control.
How long does delivery of the LG Multi V S ARUN040GSS4 Mini VRF Multi-Split Outdoor Unit 12.1kW take?
This unit is 3-7 working days. Delivery is then 1–2 working days to most UK mainland addresses, and 3–6 working days into the EU.
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Mitsubishi ElectricAnnual energy savings estimate
How much this A++-rated unit could save versus a standard C-rated model, based on your usage.
This unit
333 kWh/yr
EER 13
Standard model
541 kWh/yr
EER 8
Est. saving
£56.15
208 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (41,000 BTU). Actual savings vary with room size, climate and usage patterns.
Winter heating cost: this AC vs electric heaters
This unit reverses to heat your room in winter. Based on its 12 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£2528
This AC / season
£843
You save / season
£1686
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 3121 kWh | £843 | Up to 300% | |
| Plug-in electric heater | 9364 kWh | £2528 | 100% | |
| Electric storage heater | 9364 kWh | £2528 | 100% |
Heat output estimated from this unit's 42,600 BTU/hr rating. A heat pump moves heat (COP ≈ 3), so it uses about a third of the electricity of a direct-electric heater for the same warmth. Actual savings vary with room size, insulation, tariff and usage. See the full comparison →
Share your savings
This heat-pump AC costs only £843/season to heat a room vs £2528 for an electric heater - that's £1686 saved. https://stockool.store/products/lg-multi-v-s-arun040gss4-mini-vrf-multi-split-outdoor-unit
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