Daikin 4MXM68A9 Multi-Split Outdoor Unit (4 Rooms)
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The Daikin 4MXM68A9 is a high-capacity multi-split outdoor unit engineered to support up to four indoor units, making it the ultimate solution for larger UK homes. This system provides the flexibility to create a bespoke climate control network, allowing each room to have its own independent temperature setting and schedule. Whether you need to cool a large open-plan living area or heat multiple bedrooms during the winter, this unit delivers consistent, reliable performance. Its advanced R32 inverter technology ensures high seasonal efficiency, often reaching A+++ ratings in cooling, which helps keep energy consumption low. The unit is designed for whisper-quiet operation, ensuring that even with four rooms running, your home remains peaceful. Its compact design allows for flexible installation on walls, roofs, or terraces. As with all split systems, this unit requires professional installation by a qualified F-Gas engineer to ensure optimal performance and longevity.
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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
The Daikin 4MXM68A9 is a high-capacity multi-split outdoor unit engineered to support up to four indoor units, making it the ultimate solution for larger UK homes. This system provides the flexibility to create a bespoke climate control network, allowing each room to have its own independent temperature setting and schedule. Whether you need to cool a large open-plan living area or heat multiple bedrooms during the winter, this unit delivers consistent, reliable performance. Its advanced R32 inverter technology ensures high seasonal efficiency, often reaching A+++ ratings in cooling, which helps keep energy consumption low. The unit is designed for whisper-quiet operation, ensuring that even with four rooms running, your home remains peaceful. Its compact design allows for flexible installation on walls, roofs, or terraces. As with all split systems, this unit requires professional installation by a qualified F-Gas engineer to ensure optimal performance and longevity.
Common questions about the Daikin 4MXM68A9 Multi-Split Outdoor Unit (4 Rooms)
How many BTU is the Daikin 4MXM68A9 Multi-Split Outdoor Unit (4 Rooms)?
The Daikin 4MXM68A9 Multi-Split Outdoor Unit (4 Rooms) has a cooling capacity of 24,000 BTU, suitable for Up to 80m² total.
What room size is the Daikin 4MXM68A9 Multi-Split Outdoor Unit (4 Rooms) suitable for?
The Daikin 4MXM68A9 Multi-Split Outdoor Unit (4 Rooms) is recommended for rooms Up to 80m² total.
Can I install the Daikin 4MXM68A9 Multi-Split Outdoor Unit (4 Rooms) 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 4MXM68A9 Multi-Split Outdoor Unit (4 Rooms) smart-home compatible?
Yes — the Daikin 4MXM68A9 Multi-Split Outdoor Unit (4 Rooms) 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
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
£1662
This AC / season
£554
You save / season
£1108
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 2052 kWh | £554 | Up to 300% | |
| Plug-in electric heater | 6155 kWh | £1662 | 100% | |
| Electric storage heater | 6155 kWh | £1662 | 100% |
Heat output estimated from this unit's 28,000 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 £554/season to heat a room vs £1662 for an electric heater - that's £1108 saved. https://stockool.store/products/daikin-4mxm68a9-multi-split-outdoor-unit