LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW
Available to order — dispatched on the lead time shown below.
Trade pricing available — apply or sign in for your trade rate
Retail prices include VAT.
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.
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 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.
Compare similar units
Side-by-side specs for other multi-split system ac in a similar BTU range.
Common questions about the LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW
How many BTU is the LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW?
The LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW has a cooling capacity of 24,000 BTU, suitable for 4 rooms (up to 75m² combined).
What room size is the LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW suitable for?
The LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW is recommended for rooms 4 rooms (up to 75m² combined).
Can I install the LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW 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 F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW smart-home compatible?
Yes — the LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW supports LG ThinQ, Amazon Alexa, Google Assistant for app and voice control.
How long does delivery of the LG Multi F MU4R25.U40 4-Port Multi-Split Outdoor Unit 7.0kW take?
This unit is 2-4 working days. Delivery is then 1–2 working days to most UK mainland addresses, and 3–6 working days into the EU.
Filter by brand
Belaco
Stiebel Eltron
BroughtonReznor
CIATPowrmaticFlaktGroupSwegon
SuntecCostwayVYtronIXBeldray
ClarkeOmega AltalfaDanthermAmcorRhoss
KelvinatorWestinghouseYorkTraneLennoxBlack + DeckerHoneywell
Senville
AUX
Comfee
Whynter
Viessmann
Rinnai
Aermec
NIBE
Sinclair
Blyss
Fral
Whirlpool
Electrolux
Sharp
Cooper & Hunter
Daitsu
Dimplex
Bosch
Vaillant
Olimpia Splendid
Carrier
Toshiba
Mitsubishi Heavy Industries
DeLonghi
Hitachi
Pro Breeze
Meaco
AEGDevola
FujitsuelectriQSamsung
Woods
Midea
Haier
TCL
Hisense
LG
Gree
EcoAir
Panasonic
Sealey
Daikin
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
181 kWh/yr
EER 14
Standard model
317 kWh/yr
EER 8
Est. saving
£36.63
136 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (24,000 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 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 →
Share your savings
This heat-pump AC costs only £526/season to heat a room vs £1579 for an electric heater - that's £1052 saved. https://stockool.store/products/lg-multi-f-mu4r25-u40-4-port-multi-split-outdoor-unit
You may also need
Sealey Air Cooler, Purifier & Humidifier with Remote Control 13L SAC13
Drop-ship available
Sealey Air Cooler, Purifier & Humidifier SAC04
Drop-ship available
Sealey Air Cooler, Heater, Purifier & Humidifier SAC41
