Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System
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Designed for substantial living zones, open-plan kitchen diners, and commercial workspaces up to 50m², the Mitsubishi Heavy Industries SRK50ZS-WF Kireia unit produces a robust 5.0kW (18,000 BTU) cooling and 5.8kW (19,790 BTU) heating output. Operating on eco-conscious R32 refrigerant with DC Inverter control, it delivers rapid climate adjustment with remarkable A++ seasonal energy efficiency. Standard features include factory-integrated Smart M-Air Wi-Fi for intuitive smartphone control, comprehensive weekly timers, and voice assistant automation. The advanced Allergen Clear operation neutralises microbial organisms in under 90 minutes, while intelligent louvre oscillation ensures widespread, gentle airflow distribution throughout deeper open interiors. Requires professional F-Gas certified 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 Mitsubishi Heavy Industries →Full Specifications
Physical dimensions
Exact dimensions for this model are being confirmed with Mitsubishi Heavy Industries — ask us and we will send the cut sheet with mounting and clearance figures.
Description
Designed for substantial living zones, open-plan kitchen diners, and commercial workspaces up to 50m², the Mitsubishi Heavy Industries SRK50ZS-WF Kireia unit produces a robust 5.0kW (18,000 BTU) cooling and 5.8kW (19,790 BTU) heating output. Operating on eco-conscious R32 refrigerant with DC Inverter control, it delivers rapid climate adjustment with remarkable A++ seasonal energy efficiency. Standard features include factory-integrated Smart M-Air Wi-Fi for intuitive smartphone control, comprehensive weekly timers, and voice assistant automation. The advanced Allergen Clear operation neutralises microbial organisms in under 90 minutes, while intelligent louvre oscillation ensures widespread, gentle airflow distribution throughout deeper open interiors. Requires professional F-Gas certified installation.
Compare similar units
Side-by-side specs for other split system ac in a similar BTU range.
Common questions about the Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System
How many BTU is the Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System?
The Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System has a cooling capacity of 18,000 BTU, suitable for Up to 50m².
What room size is the Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System suitable for?
The Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System is recommended for rooms Up to 50m².
Can I install the Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System 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 Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System smart-home compatible?
Yes — the Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System supports Amazon Alexa, Google Home for app and voice control.
How long does delivery of the Mitsubishi Heavy Industries SRK50ZS-WF / SRC50ZS-W Kireia 5.0kW Inverter Split System 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
£1175
This AC / season
£392
You save / season
£783
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 1450 kWh | £392 | Up to 300% | |
| Plug-in electric heater | 4350 kWh | £1175 | 100% | |
| Electric storage heater | 4350 kWh | £1175 | 100% |
Heat output estimated from this unit's 19,790 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 £392/season to heat a room vs £1175 for an electric heater - that's £783 saved. https://stockool.store/products/mhi-srk50zs-wf-kireia-5-0kw-inverter-split
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