AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone Multi Split Outdoor Unit
Available to order — dispatched on the lead time shown below.
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Retail prices include VAT.
The AUX Free Match AM2-H18/4DR3 is a high-efficiency dual-zone multi split inverter outdoor unit engineered to power two separate indoor climate zones from a single exterior footprint. Delivering a rated cooling capacity of 5.3kW (18,000 BTU) and an impressive heating output of 5.6kW, this reverse-cycle heat pump condenser is ideal for multi-room UK residential applications including modern flats, semidetached homes, and compact home offices. Driven by advanced 180-degree sine wave DC inverter technology and low-GWP R32 refrigerant, the system achieves an outstanding A++ energy efficiency rating. It operates reliably in challenging weather conditions, supplying efficient cooling even at high ambient summer peaks and dependable warmth when external temperatures dip down to -15°C. The AM2-H18/4DR3 supports diverse indoor combinations such as wall mounted, cassette, or ducted units with independent room thermostatic zoning, ensuring personalised climate management across living and sleeping spaces.
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 AUX →Full Specifications
Physical dimensions
Exact dimensions for this model are being confirmed with AUX — ask us and we will send the cut sheet with mounting and clearance figures.
Description
The AUX Free Match AM2-H18/4DR3 is a high-efficiency dual-zone multi split inverter outdoor unit engineered to power two separate indoor climate zones from a single exterior footprint. Delivering a rated cooling capacity of 5.3kW (18,000 BTU) and an impressive heating output of 5.6kW, this reverse-cycle heat pump condenser is ideal for multi-room UK residential applications including modern flats, semidetached homes, and compact home offices. Driven by advanced 180-degree sine wave DC inverter technology and low-GWP R32 refrigerant, the system achieves an outstanding A++ energy efficiency rating. It operates reliably in challenging weather conditions, supplying efficient cooling even at high ambient summer peaks and dependable warmth when external temperatures dip down to -15°C. The AM2-H18/4DR3 supports diverse indoor combinations such as wall mounted, cassette, or ducted units with independent room thermostatic zoning, ensuring personalised climate management across living and sleeping spaces.
Compare similar units
Side-by-side specs for other multi-split system ac in a similar BTU range.
Common questions about the AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone Multi Split Outdoor Unit
How many BTU is the AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone Multi Split Outdoor Unit?
The AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone Multi Split Outdoor Unit has a cooling capacity of 18,000 BTU, suitable for Up to 55m² across 2 zones.
What room size is the AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone Multi Split Outdoor Unit suitable for?
The AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone Multi Split Outdoor Unit is recommended for rooms Up to 55m² across 2 zones.
Can I install the AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone 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 AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone Multi Split Outdoor Unit smart-home compatible?
Yes — the AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone Multi Split Outdoor Unit supports Amazon Alexa, Google Home, Tuya/SmartLife for app and voice control.
How long does delivery of the AUX Free Match AM2-H18/4DR3 5.3kW Dual-Zone 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
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
£1128
This AC / season
£376
You save / season
£752
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 1392 kWh | £376 | Up to 300% | |
| Plug-in electric heater | 4176 kWh | £1128 | 100% | |
| Electric storage heater | 4176 kWh | £1128 | 100% |
Heat output estimated from this unit's 19,000 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 £376/season to heat a room vs £1128 for an electric heater - that's £752 saved. https://stockool.store/products/aux-free-match-am2-h18-4dr3-5-3kw-dual-zone-multi-split-outdoor-unit
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