
Daikin 3MXM52N9 Multi-Split Outdoor Unit (3 Rooms)
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Upgrade your home comfort with the Daikin 3MXM52N9, a robust multi-split outdoor unit designed to connect up to three indoor units. This system is ideal for family homes requiring climate control in multiple bedrooms or a combination of living areas and home offices. By centralising your air conditioning needs into one outdoor unit, you maintain a clean, aesthetic exterior while enjoying the luxury of individual temperature control for every room. The unit features Daikin’s industry-leading inverter technology, which adjusts power consumption based on real-time demand, ensuring maximum efficiency and lower running costs. Its quiet operation makes it perfect for densely populated residential areas in the UK. With support for various indoor unit styles, from wall-mounted to concealed ceiling units, this system offers unparalleled design flexibility. Professional installation is mandatory to ensure the system is correctly commissioned and operates at peak efficiency.
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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
Downloads & specs
More from Daikin →Full Specifications
Description
Upgrade your home comfort with the Daikin 3MXM52N9, a robust multi-split outdoor unit designed to connect up to three indoor units. This system is ideal for family homes requiring climate control in multiple bedrooms or a combination of living areas and home offices. By centralising your air conditioning needs into one outdoor unit, you maintain a clean, aesthetic exterior while enjoying the luxury of individual temperature control for every room. The unit features Daikin’s industry-leading inverter technology, which adjusts power consumption based on real-time demand, ensuring maximum efficiency and lower running costs. Its quiet operation makes it perfect for densely populated residential areas in the UK. With support for various indoor unit styles, from wall-mounted to concealed ceiling units, this system offers unparalleled design flexibility. Professional installation is mandatory to ensure the system is correctly commissioned and operates at peak efficiency.
Compare similar units
Side-by-side specs for other multi-split system ac in a similar BTU range.
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Stiebel Eltron
Broughton
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Omega Altalfa
Clarke
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VYtronIX
Costway
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Swegon
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Mitsubishi Heavy Industries
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electriQ
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Panasonic
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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
146 kWh/yr
EER 13
Standard model
237 kWh/yr
EER 8
Est. saving
£24.65
91 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (18,000 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 6 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£1187
This AC / season
£396
You save / season
£791
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 1465 kWh | £396 | Up to 300% | |
| Plug-in electric heater | 4396 kWh | £1187 | 100% | |
| Electric storage heater | 4396 kWh | £1187 | 100% |
Heat output estimated from this unit's 20,000 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 →
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