Daikin 4MXM80A9 Multi-Split Outdoor Unit
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For larger residential properties, the Daikin 4MXM80A9 offers the power and flexibility to connect up to four indoor units to a single outdoor condenser. This high-capacity system is designed to provide comprehensive climate control across multiple zones, ensuring that every room maintains your preferred temperature. By utilizing advanced inverter technology, the 4MXM80A9 adjusts its output to match the specific requirements of each connected indoor unit, resulting in significant energy savings and consistent comfort. The unit is built to withstand the UK climate, providing reliable heating during colder months and efficient cooling during summer heatwaves. Its compact footprint allows for flexible installation on walls, roofs, or terraces, keeping your outdoor space tidy. With smart app integration, you can easily schedule and monitor the climate of each room remotely. This unit is the ultimate solution for homeowners who demand high performance, reliability, and individual room control. Requires professional F-Gas installation.
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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
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
Description
For larger residential properties, the Daikin 4MXM80A9 offers the power and flexibility to connect up to four indoor units to a single outdoor condenser. This high-capacity system is designed to provide comprehensive climate control across multiple zones, ensuring that every room maintains your preferred temperature. By utilizing advanced inverter technology, the 4MXM80A9 adjusts its output to match the specific requirements of each connected indoor unit, resulting in significant energy savings and consistent comfort. The unit is built to withstand the UK climate, providing reliable heating during colder months and efficient cooling during summer heatwaves. Its compact footprint allows for flexible installation on walls, roofs, or terraces, keeping your outdoor space tidy. With smart app integration, you can easily schedule and monitor the climate of each room remotely. This unit is the ultimate solution for homeowners who demand high performance, reliability, and individual room control. Requires professional F-Gas installation.
Compare similar units
Side-by-side specs for other multi-split system ac in a similar BTU range.
Common questions about the Daikin 4MXM80A9 Multi-Split Outdoor Unit
How many BTU is the Daikin 4MXM80A9 Multi-Split Outdoor Unit?
The Daikin 4MXM80A9 Multi-Split Outdoor Unit has a cooling capacity of 27,300 BTU, suitable for Up to 100m² total.
What room size is the Daikin 4MXM80A9 Multi-Split Outdoor Unit suitable for?
The Daikin 4MXM80A9 Multi-Split Outdoor Unit is recommended for rooms Up to 100m² total.
Can I install the Daikin 4MXM80A9 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 4MXM80A9 Multi-Split Outdoor Unit smart-home compatible?
Yes — the Daikin 4MXM80A9 Multi-Split Outdoor Unit supports Amazon Alexa, Google Home for app and voice control.
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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
222 kWh/yr
EER 13
Standard model
360 kWh/yr
EER 8
Est. saving
£37.39
138 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (27,300 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
£1822
This AC / season
£607
You save / season
£1215
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 2249 kWh | £607 | Up to 300% | |
| Plug-in electric heater | 6748 kWh | £1822 | 100% | |
| Electric storage heater | 6748 kWh | £1822 | 100% |
Heat output estimated from this unit's 30,700 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 £607/season to heat a room vs £1822 for an electric heater - that's £1215 saved. https://stockool.store/products/daikin-4mxm80a9-multi-split-outdoor-unit
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