Mitsubishi Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette
Available to order — dispatched on the lead time shown below.
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Retail prices include VAT.
The Mitsubishi Electric SLZ-M50FA delivers high-output performance in a discreet 600 x 600mm ceiling tile footprint. Providing 5.0kW (approx. 17,000 BTU) of cooling and 5.5kW of energy-efficient heating, it is engineered for medium to large open-plan spaces, boardroom suites, retail units, and restaurant dining areas up to 50m². This unit features multi-directional horizontal airflow louvers that distribute treated air evenly across the room to eliminate hot and cold zones. With Mitsubishi's DC inverter technology and low-GWP R32 refrigerant, the system achieves remarkable seasonal efficiency while keeping energy bills controlled. Compatible with the optional MELCloud Wi-Fi module, users gain smartphone management and voice assistance via Amazon Alexa and Google Home. Built-in condensate pump and quiet indoor sound levels make it an industry-favourite ceiling cassette for discerning commercial and upscale domestic installations.
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 Mitsubishi Electric →Official Mitsubishi Electric manual
The manufacturer's PDF for this model is being sourced and will be downloadable here.
Full Specifications
Physical dimensions
Exact dimensions for this model are being confirmed with Mitsubishi Electric — ask us and we will send the cut sheet with mounting and clearance figures.
Description
The Mitsubishi Electric SLZ-M50FA delivers high-output performance in a discreet 600 x 600mm ceiling tile footprint. Providing 5.0kW (approx. 17,000 BTU) of cooling and 5.5kW of energy-efficient heating, it is engineered for medium to large open-plan spaces, boardroom suites, retail units, and restaurant dining areas up to 50m². This unit features multi-directional horizontal airflow louvers that distribute treated air evenly across the room to eliminate hot and cold zones. With Mitsubishi's DC inverter technology and low-GWP R32 refrigerant, the system achieves remarkable seasonal efficiency while keeping energy bills controlled. Compatible with the optional MELCloud Wi-Fi module, users gain smartphone management and voice assistance via Amazon Alexa and Google Home. Built-in condensate pump and quiet indoor sound levels make it an industry-favourite ceiling cassette for discerning commercial and upscale domestic installations.
Compare similar units
Side-by-side specs for other ceiling cassettes in a similar BTU range.
Common questions about the Mitsubishi Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette
How many BTU is the Mitsubishi Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette?
The Mitsubishi Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette has a cooling capacity of 17,000 BTU, suitable for Up to 50m².
What room size is the Mitsubishi Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette suitable for?
The Mitsubishi Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette is recommended for rooms Up to 50m².
Can I install the Mitsubishi Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette 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 Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette smart-home compatible?
Yes — the Mitsubishi Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette supports Amazon Alexa, Google Home for app and voice control.
How long does delivery of the Mitsubishi Electric SLZ-M50FA 5.0kW Compact 4-Way Ceiling Cassette 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
138 kWh/yr
EER 13
Standard model
224 kWh/yr
EER 8
Est. saving
£23.28
86 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (17,000 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 5 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£1113
This AC / season
£371
You save / season
£742
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 1375 kWh | £371 | Up to 300% | |
| Plug-in electric heater | 4124 kWh | £1113 | 100% | |
| Electric storage heater | 4124 kWh | £1113 | 100% |
Heat output estimated from this unit's 18,760 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 £371/season to heat a room vs £1113 for an electric heater - that's £742 saved. https://stockool.store/products/mitsubishi-electric-slz-m50fa-5-0kw-compact-ceiling-cassette
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