
LG MU5R30.U40 Five Zone Multi-Split Outdoor Unit
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For those requiring a comprehensive whole-house climate solution, the LG MU5R30.U40 Five Zone Multi-Split Outdoor Unit stands as the pinnacle of residential air conditioning technology. This powerful 8.8kW (31,000 BTU) unit can support up to five separate indoor units, allowing for tailored comfort in every corner of a large property, from the kitchen and lounge to multiple upstairs bedrooms. Despite its high capacity, the MU5R30 remains remarkably energy-efficient, utilising LG’s signature Dual Inverter technology to precisely match the cooling or heating load of the active zones. This prevents wasted energy and ensures whisper-quiet operation that won't disturb you or your neighbours. The system is fully compatible with the LG ThinQ ecosystem, enabling smart scheduling and energy monitoring through a single app. It is particularly well-suited for UK homeowners undertaking major renovations or new builds who want a discreet, professional-grade HVAC system without the clutter of multiple outdoor condensers. With its ability to provide reliable heating even in low outdoor temperatures, it serves as an excellent year-round heat pump solution, reducing reliance on traditional gas boilers and contributing to a more sustainable home.
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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
Full Specifications
Description
For those requiring a comprehensive whole-house climate solution, the LG MU5R30.U40 Five Zone Multi-Split Outdoor Unit stands as the pinnacle of residential air conditioning technology. This powerful 8.8kW (31,000 BTU) unit can support up to five separate indoor units, allowing for tailored comfort in every corner of a large property, from the kitchen and lounge to multiple upstairs bedrooms. Despite its high capacity, the MU5R30 remains remarkably energy-efficient, utilising LG’s signature Dual Inverter technology to precisely match the cooling or heating load of the active zones. This prevents wasted energy and ensures whisper-quiet operation that won't disturb you or your neighbours. The system is fully compatible with the LG ThinQ ecosystem, enabling smart scheduling and energy monitoring through a single app. It is particularly well-suited for UK homeowners undertaking major renovations or new builds who want a discreet, professional-grade HVAC system without the clutter of multiple outdoor condensers. With its ability to provide reliable heating even in low outdoor temperatures, it serves as an excellent year-round heat pump solution, reducing reliance on traditional gas boilers and contributing to a more sustainable home.
Compare similar units
Side-by-side specs for other multi-split system ac in a similar BTU range.
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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
252 kWh/yr
EER 13
Standard model
409 kWh/yr
EER 8
Est. saving
£42.46
157 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (31,000 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 10 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£2018
This AC / season
£673
You save / season
£1345
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 2491 kWh | £673 | Up to 300% | |
| Plug-in electric heater | 7474 kWh | £2018 | 100% | |
| Electric storage heater | 7474 kWh | £2018 | 100% |
Heat output estimated from this unit's 34,000 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 £673/season to heat a room vs £2018 for an electric heater - that's £1345 saved. https://stockool.store/products/lg-mu5r30-u40-five-zone-outdoor-unit
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