Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette System
Available to order — dispatched on the lead time shown below.
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Retail prices include VAT.
Boasting a commanding 14.0kW thermal output, the Rinnai CSN140R is the flagship heavy-duty ceiling cassette split system engineered for large commercial properties, gyms, showrooms, and open workspaces. Its 360-degree broad-flow discharge pattern disperses conditioned air evenly across expansive layouts, minimising thermal stratification and hot spots. Built around DC inverter heat pump mechanics, the system offers high efficiency, reduced running noise, and precise modulating capacity. Integrated smart controls allow comprehensive schedule creation and remote access via Wi-Fi with Alexa and Google Home voice control capability. Complete with an internal high-head drain pump, washable high-density filtration, and a low-profile aesthetic fascia, the CSN140R gives UK commercial businesses robust, continuous environmental regulation combined with lower operational overheads.
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 Rinnai →Official Rinnai 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 Rinnai — ask us and we will send the cut sheet with mounting and clearance figures.
Description
Boasting a commanding 14.0kW thermal output, the Rinnai CSN140R is the flagship heavy-duty ceiling cassette split system engineered for large commercial properties, gyms, showrooms, and open workspaces. Its 360-degree broad-flow discharge pattern disperses conditioned air evenly across expansive layouts, minimising thermal stratification and hot spots. Built around DC inverter heat pump mechanics, the system offers high efficiency, reduced running noise, and precise modulating capacity. Integrated smart controls allow comprehensive schedule creation and remote access via Wi-Fi with Alexa and Google Home voice control capability. Complete with an internal high-head drain pump, washable high-density filtration, and a low-profile aesthetic fascia, the CSN140R gives UK commercial businesses robust, continuous environmental regulation combined with lower operational overheads.
Compare similar units
Side-by-side specs for other ceiling cassettes in a similar BTU range.
Common questions about the Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette System
How many BTU is the Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette System?
The Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette System has a cooling capacity of 48,000 BTU, suitable for Up to 110m².
What room size is the Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette System suitable for?
The Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette System is recommended for rooms Up to 110m².
Can I install the Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette 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 Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette System smart-home compatible?
Yes — the Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette System supports Amazon Alexa, Google Home for app and voice control.
How long does delivery of the Rinnai CSN140R 14.0kW High-Capacity Inverter Ceiling Cassette 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
460 kWh/yr
EER 11
Standard model
633 kWh/yr
EER 8
Est. saving
£46.62
173 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (48,000 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 15 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£3027
This AC / season
£1009
You save / season
£2018
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 3737 kWh | £1009 | Up to 300% | |
| Plug-in electric heater | 11210 kWh | £3027 | 100% | |
| Electric storage heater | 11210 kWh | £3027 | 100% |
Heat output estimated from this unit's 51,000 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 £1009/season to heat a room vs £3027 for an electric heater - that's £2018 saved. https://stockool.store/products/rinnai-csn140r-14-0kw-high-capacity-inverter-ceiling-cassette-system
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