Hitachi
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VRF Systems
Indoor Units for VRF

–Indoor Units for VRF

There’s always a solution for every space and budget, including aesthics-first visual, optional comfort features, automate operation, plus air quality.

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– Discover the wide portfolio of our VRF Indoor Units

Find the perfect units for your project choosing from Cassettes, Ceiling Suspended, Floor/Ceiling Convertible, Floor Standing, Floor Concealed, Wall Mounted and Ducted.

– The inventor of the 4-way cassette and still the innovation leader

Since launching the world’s first 4-way cassette in 1983 we’ve been refining the design to reduce the required ceiling height and improve airflow performance. Our latest cassettes can be fitted with the TwinSense panel to enable a range of automated comfort features using occupant sensing technology. Alternatively, the unique Silent Iconic 4-way cassette panel with its sleek air outlet, premium materials and low-profile finish offers a new way to integrate cassette AC units seamlessly into any interior design.

– SmoothDrive – more stable and accurate temperatures, improved energy efficiency

With more than 50 years experience in optimizing airflow and energy efficiency, our latest indoor units integrate a sensor for remote reading of the air supply temperature, so that the room temperature can be more accurately maintained. The function of this simple sensor is elevated when combined with SmoothDrive technology in compatible VRF outdoor units, as it enables precise temperature monitoring and control of the compressor frequency according to the gap between set and actual room temperature. This dramatically improves temperature stability and is up to 39% more efficient[1] under typical part-load conditions that VRF systems encounter.

– Maximize your comfort with Hitachi's VRF Indoor Units

Prevent cold drafts
When starting up air conditioners can discharge very cold air to quickly reach the required temperature for the room, but this can result in cold drafts making occupants uncomfortable. With GentleCool you can adjust the balance between achieving a lower room temperature quickly and avoiding cold drafts.
Occupancy sensing technology
With CrowdSense [2] technology, select units can determine how many people are in a space and adjust the cooling or heating capacity accordingly, so the room will never get too hot or cold, whether it’s crowded or almost empty

– Improve air quality with low-cost upgrades

Optional Ionizer Kit can be added to a ducted unit in minutes, even as a post-install upgrade. This generates negative ions in the airflow which bind to pollutants sending them harmlessly to the floor, as a result it has minimal impact on energy consumption and fan noise compared with a filter. Up to 99.9% effective on inhibiting SARS-CoV-2(3) and more than 99% effective on a range of viruses and bacteria[4]. For 4-way cassettes, the optional ViroSense Z filter can be installed which is rated for 99.9% SARS-COV-2 inhibition [5]

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– Notes

[1] Testing Condition (at Cooling Operation, Load Factor: Approx. 33%) Without SmoothDrive; average power consumption 2.46kW / With SmoothDrive; average power consumption 1.49kW. VRF ODU:(RAS-AP280DG3 = RAS-10FSNS) & VRF IDU: 4-way cassette indoor units (RCI-AP140K5 = RCI-5.0FSRP) & Indoor Unit Inlet Temperature: 27°C (Dry Bulb) / 19°C (Wet Bulb)　Ambient Temperature at Air Volume “High”: 23°C (Dry Bulb) / Piping Length between Indoor Unit and Outdoor Unit: 15m / Testing Location: Environment Testing Facility at Kansai Denryoku (power supply company)
[2] Available on select Cassette models. Requires optional Twin-Sense cassette panel with Motion Sensor & Radiant Temperature Sensor
[3] Refers to Ionizer Kit test conducted Aug/Sept 2020 at Nara Medical University. Ozone Density : 0.1ppm. Tested Sample: Ozone generator which keeps 0.5~3.0 ppm emission in a space of 6.7L after 3 min generation. Host Cells: VeroE6/TMPRSS2. Washing-out Solution: SCDLP medium. Testing 5. Condition: 19.6~21.8℃, 50.0~59.7%RH (Humidity) . Infectivity Measurement Method: Virus Plaque Assay.
[4] For example, [Escherichia coli] [Staphylococcus aureus], [Influenzas virus] and others. Numerous tests on various products.
[5] ViroSense Z2 test conducted June 2021 at Japan Textile Product Quality and Technology Center using testing method ISO 18184.