Daikin FFA35A/RXM35R9 3.5kW 12,000btu Fully Flat Ceiling Cassette
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The Daikin FFA35A/RXM35R9 is a sophisticated 12,000 BTU ceiling cassette that sits perfectly flush with standard ceiling tiles, offering a clean and unobtrusive look for modern interiors. This unit is specifically designed for medium-sized rooms, providing powerful cooling and efficient heating. It utilizes Daikin's signature R-32 refrigerant technology to ensure high seasonal efficiency and lower energy consumption. The unit is equipped with individual flap control, allowing users to direct airflow precisely where it is needed, avoiding cold drafts. Its compact design and low installation height make it suitable for spaces with limited ceiling voids. With optional Wi-Fi connectivity, users can enjoy smart control via the Daikin Residential Controller app. This system is a robust, reliable choice for both commercial offices and residential living areas, requiring professional installation by a qualified HVAC engineer.
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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 →Manufacturer instructions
Installation of the Daikin FFA35A/RXM35R9 ceiling cassette must be performed exclusively by qualified personnel in compliance with local legislation and F-gas regulations. The process requires careful site selection based on the unit's installation drawings to ensure proper airflow and service access. Mounting involves securing the indoor unit within the ceiling void, followed by precise refrigerant piping connections and electrical wiring as detailed in the official installer reference guide. The system uses R32 refrigerant, necessitating strict adherence to safety protocols regarding leak detection and ventilation. Before first power-on, the installer must verify all connections, perform a vacuum test, and ensure the condensate drain is correctly sloped. Users should consult the provided operation manual for setup and daily usage, while all maintenance and servicing must be handled by authorized professionals to maintain warranty and safety standards.
Fixed units must be installed by a qualified F-gas engineer. Find an installer — we'll match you with a local HVAC professional.
Installation and Operation Manual
Official Daikin PDF — download or print before your unit arrives.
Air Conditioning Catalogue
Daikin catalogue — open the official flipbook in a new tab.
Split Catalogue
Daikin catalogue — open the official flipbook in a new tab.
Explore Daikin
Brand history, full catalogue range and all Daikin brochures.
Full Specifications
Description
The Daikin FFA35A/RXM35R9 is a sophisticated 12,000 BTU ceiling cassette that sits perfectly flush with standard ceiling tiles, offering a clean and unobtrusive look for modern interiors. This unit is specifically designed for medium-sized rooms, providing powerful cooling and efficient heating. It utilizes Daikin's signature R-32 refrigerant technology to ensure high seasonal efficiency and lower energy consumption. The unit is equipped with individual flap control, allowing users to direct airflow precisely where it is needed, avoiding cold drafts. Its compact design and low installation height make it suitable for spaces with limited ceiling voids. With optional Wi-Fi connectivity, users can enjoy smart control via the Daikin Residential Controller app. This system is a robust, reliable choice for both commercial offices and residential living areas, requiring professional installation by a qualified HVAC engineer.
Compare similar units
Side-by-side specs for other ceiling cassettes in a similar BTU range.
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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
97 kWh/yr
EER 13
Standard model
158 kWh/yr
EER 8
Est. saving
£16.44
61 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (12,000 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 4 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£831
This AC / season
£277
You save / season
£554
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 1026 kWh | £277 | Up to 300% | |
| Plug-in electric heater | 3077 kWh | £831 | 100% | |
| Electric storage heater | 3077 kWh | £831 | 100% |
Heat output estimated from this unit's 14,000 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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