Daikin 4MXM80N9 Multi-Split Outdoor Unit
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The Daikin 4MXM80N9 is a high-performance R32 multi-split outdoor unit designed to power up to four indoor units simultaneously. This versatile system is perfect for larger UK homes or multi-room office setups where individual climate control is required for different zones. By using a single outdoor condenser, you significantly reduce the visual impact on your building's exterior while maintaining high energy efficiency. The unit features Daikin's renowned swing compressor, which ensures whisper-quiet operation and long-term reliability. It is fully compatible with a wide range of indoor units, including wall-mounted, cassette, and concealed ceiling models, allowing for a bespoke installation that fits your interior design. With advanced inverter technology, the system adjusts its output to match the exact cooling or heating demand, providing consistent comfort while minimising electricity consumption. This unit is an ideal choice for those seeking a scalable, professional-grade air conditioning solution that offers both heating and cooling capabilities throughout the year.
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 Daikin →Official Daikin manual
The manufacturer's PDF for this model is being sourced and will be downloadable here.
Air Conditioning Catalogue
Daikin catalogue — open the official flipbook in a new tab.
Split Catalogue
Daikin catalogue — open the official flipbook in a new tab.
Full Specifications
Physical dimensions
Exact dimensions for this model are being confirmed with Daikin — ask us and we will send the cut sheet with mounting and clearance figures.
Description
The Daikin 4MXM80N9 is a high-performance R32 multi-split outdoor unit designed to power up to four indoor units simultaneously. This versatile system is perfect for larger UK homes or multi-room office setups where individual climate control is required for different zones. By using a single outdoor condenser, you significantly reduce the visual impact on your building's exterior while maintaining high energy efficiency. The unit features Daikin's renowned swing compressor, which ensures whisper-quiet operation and long-term reliability. It is fully compatible with a wide range of indoor units, including wall-mounted, cassette, and concealed ceiling models, allowing for a bespoke installation that fits your interior design. With advanced inverter technology, the system adjusts its output to match the exact cooling or heating demand, providing consistent comfort while minimising electricity consumption. This unit is an ideal choice for those seeking a scalable, professional-grade air conditioning solution that offers both heating and cooling capabilities throughout the year.
Compare similar units
Side-by-side specs for other multi-split system ac in a similar BTU range.
Common questions about the Daikin 4MXM80N9 Multi-Split Outdoor Unit
How many BTU is the Daikin 4MXM80N9 Multi-Split Outdoor Unit?
The Daikin 4MXM80N9 Multi-Split Outdoor Unit has a cooling capacity of 27,000 BTU, suitable for Up to 80m² total.
What room size is the Daikin 4MXM80N9 Multi-Split Outdoor Unit suitable for?
The Daikin 4MXM80N9 Multi-Split Outdoor Unit is recommended for rooms Up to 80m² total.
Can I install the Daikin 4MXM80N9 Multi-Split Outdoor Unit 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 Daikin 4MXM80N9 Multi-Split Outdoor Unit smart-home compatible?
Yes — the Daikin 4MXM80N9 Multi-Split Outdoor Unit supports Amazon Alexa, Google Home for app and voice control.
How long does delivery of the Daikin 4MXM80N9 Multi-Split Outdoor Unit take?
This unit is dispatched in 2-3 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
219 kWh/yr
EER 13
Standard model
356 kWh/yr
EER 8
Est. saving
£36.98
137 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (27,000 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 9 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£1780
This AC / season
£593
You save / season
£1187
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 2198 kWh | £593 | Up to 300% | |
| Plug-in electric heater | 6594 kWh | £1780 | 100% | |
| Electric storage heater | 6594 kWh | £1780 | 100% |
Heat output estimated from this unit's 30,000 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 £593/season to heat a room vs £1780 for an electric heater - that's £1187 saved. https://stockool.store/products/daikin-4mxm80n9-multi-split-outdoor-unit
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