
LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW
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The LG Multi F MU4R25.U40 is a powerful four-zone multi-split outdoor heat pump designed to supply comprehensive heating and cooling across four independent rooms. With a cooling rating of 7.0kW and robust 7.8kW heating performance, it replaces multiple exterior condensers with a single, highly efficient outdoor unit. Utilizing high-efficiency R32 refrigerant, twin rotary inverter compression, and intelligent load modulation, it ensures minimal electrical draw alongside whisper-quiet residential operation. Anti-corrosive Ocean Black Fin protection safeguards the condenser array from salt laden air and typical UK inclement weather. Indoor units across four zones can mix high-wall, cassette, or ducted designs to match every room's styling requirements, while LG ThinQ integration lets homeowners configure individual room temperatures or heating schedules via iOS and Android apps. F-Gas certified installation is mandatory to establish flared refrigeration circuits, charge checks, and dedicated electrical feeds. It provides an exceptional central decarbonisation solution for contemporary UK households.
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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
The LG Multi F MU4R25.U40 is a powerful four-zone multi-split outdoor heat pump designed to supply comprehensive heating and cooling across four independent rooms. With a cooling rating of 7.0kW and robust 7.8kW heating performance, it replaces multiple exterior condensers with a single, highly efficient outdoor unit. Utilizing high-efficiency R32 refrigerant, twin rotary inverter compression, and intelligent load modulation, it ensures minimal electrical draw alongside whisper-quiet residential operation. Anti-corrosive Ocean Black Fin protection safeguards the condenser array from salt laden air and typical UK inclement weather. Indoor units across four zones can mix high-wall, cassette, or ducted designs to match every room's styling requirements, while LG ThinQ integration lets homeowners configure individual room temperatures or heating schedules via iOS and Android apps. F-Gas certified installation is mandatory to establish flared refrigeration circuits, charge checks, and dedicated electrical feeds. It provides an exceptional central decarbonisation solution for contemporary UK households.
Winter heating cost: this AC vs electric heaters
This unit reverses to heat your room in winter. Based on its 8 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£1579
This AC / season
£526
You save / season
£1052
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 1949 kWh | £526 | Up to 300% | |
| Plug-in electric heater | 5847 kWh | £1579 | 100% | |
| Electric storage heater | 5847 kWh | £1579 | 100% |
Heat output estimated from this unit's 26,600 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 →
