– S-Series Premium Wall Mount with FrostWash Technology
Wall Mounted Inverter Heat Pump AC
– S-Series Premium Wall Mount with FrostWash Technology
Wall Mounted Inverter Heat Pump AC
As part of Hitachi’s commitment to constant improvement, we looked for an unprecedented need in our product offering that would allow us to improve our customer experience and create a point of difference that would set us apart.
We identified that unmet need as cleanliness.
– Introducing Frost Wash Technology


– Self-Cleaning Technology
The new Hitachi 'S' Series range of split systems offers many innovative features, from enhanced energy efficiency, to airflow control and ultra-quiet operation. FrostWash addresses an issue that had long stumped the air conditioning industry - how to effectively and efficiently clean the inside of room air conditioning units.
With FrostWash, a revolutionary new cleaning technology, you can depend on cleaner, fresher air all year round.
When no motion is detected, the system cools the heat exchanger down to -15° C forming a thin layer of frost from the moisture within the air. While the frost is being formed, it lifts dust particles, mould and bacteria off the heat exchanger and traps it.
Once an adequate layer of frost has been formed, the system melts the ice, flushing away the trapped dust particles, mould and bacteria hygienically through the drain pan.
The unit then thoroughly dries the surfaces inside the unit before resuming normal operation. A clean heat exchanger keeps your unit operating at optimal efficiency and keeps the air in your home fresher and cleaner.
With FrostWash, a revolutionary new cleaning technology, you can depend on cleaner, fresher air all year round.
When no motion is detected, the system cools the heat exchanger down to -15° C forming a thin layer of frost from the moisture within the air. While the frost is being formed, it lifts dust particles, mould and bacteria off the heat exchanger and traps it.
Once an adequate layer of frost has been formed, the system melts the ice, flushing away the trapped dust particles, mould and bacteria hygienically through the drain pan.
The unit then thoroughly dries the surfaces inside the unit before resuming normal operation. A clean heat exchanger keeps your unit operating at optimal efficiency and keeps the air in your home fresher and cleaner.

– Long Lasting Hygienic Air
Providing your indoor environment with fresher, cleaner air.
FrostWash achieves a 91% reduction of bacteria and 87% reduction of mould in your unit*.
For the purest air quality, the S-Series also features an additional Nano-Titanium pre-filter as well as the unique Titanium Wasabi Air Purifying filter.
* Feature introduction based on RAS/RAC-S35YHAB. Tested by Kitasato Research Centre of Environmental Science. Test No. 2019_0154.
(Reduction effects of bacteria and mould were observed by operating Frost Wash once.)

– Premium Features
The S-Series comes with a suite of unique features such as built-in Motion Sensor with motion detect eco mode, Eco Sleep mode, leave home function and weekly scheduling capabilities.
Motion-detect Eco Mode allows the unit to adapt its temperature settings depending on people’s absence or presence - saving you power.
Motion-detect Eco Mode allows the unit to adapt its temperature settings depending on people’s absence or presence - saving you power.

– Boosted Energy Efficiency
Premium S-Series Hitachi Wall mounted split systems have increased energy efficiency and improved energy star ratings for even more power-saving operation.
The Eco Motion sensor can automatically detect if there are individuals occupying a room and if the room becomes vacant, your air conditioner will adjust the temperature accordingly to conserve energy.
FrostWash mode can be activated to keep the heat exchanger clean and reduce power usage even further.
The Eco Motion sensor can automatically detect if there are individuals occupying a room and if the room becomes vacant, your air conditioner will adjust the temperature accordingly to conserve energy.
FrostWash mode can be activated to keep the heat exchanger clean and reduce power usage even further.

– Stylish Wireless Remote Control.
The S-Series comes with a stylish wireless controller which has a built-in feature – Power Consumption Tracking.
Monitor your air conditioner’s power usage, ensuring that there are no surprises when the electricity bill arrives.
Monitor your air conditioner’s power usage, ensuring that there are no surprises when the electricity bill arrives.

– Peace of Mind
With a six-year warranty* and backed by one of Australia's largest manufacturers, Temperzone -- you will always have peace of mind.
* Applicable to S Series YHAB models only, purchased after 1st April 2021.
* Applicable to S Series YHAB models only, purchased after 1st April 2021.

– Wifi Control for your Hitachi air conditioner
Installing the optional airCloud Go wifi controller module allows you to control your wall-mounted system using your smartphone or tablet.
Operate your system from home or remotely, adjusting temperature, fan speed and setting custom schedules.
Further information on the airCloud Go can be found here.
Operate your system from home or remotely, adjusting temperature, fan speed and setting custom schedules.
Further information on the airCloud Go can be found here.

– This product is included in the VIC Upgrades Program
This product is included in our VIC Home Heating & Cooling Upgrades Program, that you can learn more about here.
– S-Series (With Frostwash)
S-Series (With Frostwash)
RAS/RAC-S25YHAB | RAS/RAC-S35YHAB | RAS/RAC-S50YHAB | RAS/RAC-S60YHAB | RAS/RAC-S70YHAB | RAS/RAC-S80YHAB |
---|

Capacity | Nominal Cooling | kW |
Nominal Heating | kW |
Capacity (Range) | Cooling | kW |
Heating | kW |
Airflow | High Cooling | l/sec |
High Heating | l/sec |
Energy Efficiency | EER | |
COP | ||
Star Rating Cooling | ||
Star Rating Heating |
Noise Levels (dB(A)) Cooling | Indoor Unit | Hi/Med/Low/Sleep |
Outdoor Unit | Cooling/Heating | |
Sound Power | Outdoor |
Dimensions (mm) | Indoor Unit | (WxHxD) |
Outdoor Unit | (WxHxD) |
Weights (kg) | Indoor / Outdoor |
Operating Range | Outdoor Op. Temp. | Cooling |
Outdoor Op. Temp. | Heating |
Refrigerant Type |
Pipe Sizes (mm) | ||
Refrig Pipe charge | ||
Min / Max Pipe Lgth / Lift (m) |
Power | Power Supply | |
Running Current | Cooling / Heating (Amps) | |
Power Supply To | ||
Interconnecting Wire | ||
Max Current | (Amps) |
2.5 |
3.2 |
0.9-3.1 |
0.9-4.2 |
142 |
158 |
5.1 |
5.08 |
5.5 |
5.5 |
40 / 33 / 24 / 22 |
47/48 |
61 |
780 x 280 x 230 |
792 x 600 x 299 |
8.5 / 37.5 |
-10°C to 46°C |
-20°C to 21°C |
R32 |
Ø6.35 / Ø9.52 |
20 |
3 / 20 / 10 |
230 - 240 Volt / 50 Hz / 1 Phase |
1.09-5.30 / 1.09-5.22 |
Outdoor Unit |
3 Core + E |
9.8 |
3.5 |
3.8 |
0.9-4.0 |
0.9-4.8 |
189 |
217 |
4.22 |
4.94 |
3.5 |
5.0 |
43 / 36 / 26 / 25 |
48/50 |
62 |
780 x 280 x 230 |
792 x 600 x 299 |
8.5 / 37.5 |
-10°C to 46°C |
-20°C to 21°C |
R32 |
Ø6.35 / Ø9.52 |
20 |
3 / 20 / 10 |
230 - 240 Volt / 50 Hz / 1 Phase |
1.09-6.09 / 1.09-6.96 |
Outdoor Unit |
3 Core + E |
9.8 |
5.0 |
6.0 |
1.2-5.8 |
1.2-6.8 |
258 |
250 |
4.31 |
4.29 |
4.0 |
4.0 |
46 / 41 / 36 / 28 |
50 / 53 |
63 |
1100 x 300 x 260 |
850 x 750 x 298 |
15 / 50 |
-10°C to 46°C |
-15°C to 24°C |
R32 |
Ø6.35 / Ø12.7 |
30 |
3 / 30 / 20 |
230 - 240 Volt / 50 Hz / 1 Phase |
2.31-8.55 / 1.67-9.66 |
Outdoor Unit |
3 Core + E |
10.5 |
6.0 |
7.0 |
1.2-6.5 |
1.2-8.0 |
258 |
250 |
3.8 |
4.05 |
3.0 |
3.5 |
46 / 41 / 32 / 30 |
50 / 53 |
63 |
1100 x 300 x 260 |
850 x 750 x 298 |
15 / 50 |
-10°C to 46°C |
-15°C to 24°C |
R32 |
Ø6.35 / Ø12.7 |
30 |
3 / 30 / 20 |
230 - 240 Volt / 50 Hz / 1 Phase |
2.31-8.55 / 1.67-9.66 |
Outdoor Unit |
3 Core + E |
10.5 |
7.0 |
8.0 |
1.5-8.0 |
1.5-8.5 |
283 |
300 |
3.54 |
4.04 |
2.5 |
3.5 |
47 / 42 / 36 / 30 |
51 / 53 |
64 |
1100 x 300 x 260 |
850 x 800 x 298 |
15 / 52 |
-10°C to 46°C |
-15°C to 24°C |
R32 |
Ø6.35 / Ø15.88 |
30 |
3 / 30 / 20 |
230 - 240 Volt / 50 Hz / 1 Phase |
2.50-9.79 / 2.19-10.72 |
Outdoor Unit |
3 Core + E |
12 |
8.0 |
9.0 |
1.5-8.5 |
1.5-9.5 |
283 |
300 |
3.27 |
3.8 |
2.0 |
3.0 |
48 / 44 / 39 / 33 |
52 / 54 |
66 |
1100 x 300 x 260 |
850 x 800 x 298 |
15 / 52 |
-10°C to 46°C |
-15°C to 24°C |
R32 |
Ø6.35 / Ø15.88 |
30 |
3 / 30 / 20 |
230 - 240 Volt / 50 Hz / 1 Phase |
2.50-9.79 / 2.19-10.72 |
Outdoor Unit |
3 Core + E |
12 |
– Documentation
Manuals, brochures and other product literature. If you need any more information, please get in touch.
– S-Series (With Frostwash)
S-Series (With Frostwash)
RAS/RAC-S25YHAB | RAS/RAC-S35YHAB | RAS/RAC-S50YHAB | RAS/RAC-S60YHAB | RAS/RAC-S70YHAB | RAS/RAC-S80YHAB |
---|

Capacity | Nominal Cooling | kW |
Nominal Heating | kW |
Capacity (Range) | Cooling | kW |
Heating | kW |
Airflow | High Cooling | l/sec |
High Heating | l/sec |
Energy Efficiency | EER | |
COP | ||
Star Rating Cooling | ||
Star Rating Heating |
Noise Levels (dB(A)) Cooling | Indoor Unit | Hi/Med/Low/Sleep |
Outdoor Unit | Cooling/Heating | |
Sound Power | Outdoor |
Dimensions (mm) | Indoor Unit | (WxHxD) |
Outdoor Unit | (WxHxD) |
Weights (kg) | Indoor / Outdoor |
Operating Range | Outdoor Op. Temp. | Cooling |
Outdoor Op. Temp. | Heating |
Refrigerant Type |
Pipe Sizes (mm) | ||
Refrig Pipe charge | ||
Min / Max Pipe Lgth / Lift (m) |
Power | Power Supply | |
Running Current | Cooling / Heating (Amps) | |
Power Supply To | ||
Interconnecting Wire | ||
Max Current | (Amps) |
2.5 |
3.2 |
0.9-3.1 |
0.9-4.2 |
142 |
158 |
5.1 |
5.08 |
5.5 |
5.5 |
40 / 33 / 24 / 22 |
47/48 |
61 |
780 x 280 x 230 |
792 x 600 x 299 |
8.5 / 37.5 |
-10°C to 46°C |
-20°C to 21°C |
R32 |
Ø6.35 / Ø9.52 |
20 |
3 / 20 / 10 |
230 - 240 Volt / 50 Hz / 1 Phase |
1.09-5.30 / 1.09-5.22 |
Outdoor Unit |
3 Core + E |
9.8 |
3.5 |
3.8 |
0.9-4.0 |
0.9-4.8 |
189 |
217 |
4.22 |
4.94 |
3.5 |
5.0 |
43 / 36 / 26 / 25 |
48/50 |
62 |
780 x 280 x 230 |
792 x 600 x 299 |
8.5 / 37.5 |
-10°C to 46°C |
-20°C to 21°C |
R32 |
Ø6.35 / Ø9.52 |
20 |
3 / 20 / 10 |
230 - 240 Volt / 50 Hz / 1 Phase |
1.09-6.09 / 1.09-6.96 |
Outdoor Unit |
3 Core + E |
9.8 |
5.0 |
6.0 |
1.2-5.8 |
1.2-6.8 |
258 |
250 |
4.31 |
4.29 |
4.0 |
4.0 |
46 / 41 / 36 / 28 |
50 / 53 |
63 |
1100 x 300 x 260 |
850 x 750 x 298 |
15 / 50 |
-10°C to 46°C |
-15°C to 24°C |
R32 |
Ø6.35 / Ø12.7 |
30 |
3 / 30 / 20 |
230 - 240 Volt / 50 Hz / 1 Phase |
2.31-8.55 / 1.67-9.66 |
Outdoor Unit |
3 Core + E |
10.5 |
6.0 |
7.0 |
1.2-6.5 |
1.2-8.0 |
258 |
250 |
3.8 |
4.05 |
3.0 |
3.5 |
46 / 41 / 32 / 30 |
50 / 53 |
63 |
1100 x 300 x 260 |
850 x 750 x 298 |
15 / 50 |
-10°C to 46°C |
-15°C to 24°C |
R32 |
Ø6.35 / Ø12.7 |
30 |
3 / 30 / 20 |
230 - 240 Volt / 50 Hz / 1 Phase |
2.31-8.55 / 1.67-9.66 |
Outdoor Unit |
3 Core + E |
10.5 |
7.0 |
8.0 |
1.5-8.0 |
1.5-8.5 |
283 |
300 |
3.54 |
4.04 |
2.5 |
3.5 |
47 / 42 / 36 / 30 |
51 / 53 |
64 |
1100 x 300 x 260 |
850 x 800 x 298 |
15 / 52 |
-10°C to 46°C |
-15°C to 24°C |
R32 |
Ø6.35 / Ø15.88 |
30 |
3 / 30 / 20 |
230 - 240 Volt / 50 Hz / 1 Phase |
2.50-9.79 / 2.19-10.72 |
Outdoor Unit |
3 Core + E |
12 |
8.0 |
9.0 |
1.5-8.5 |
1.5-9.5 |
283 |
300 |
3.27 |
3.8 |
2.0 |
3.0 |
48 / 44 / 39 / 33 |
52 / 54 |
66 |
1100 x 300 x 260 |
850 x 800 x 298 |
15 / 52 |
-10°C to 46°C |
-15°C to 24°C |
R32 |
Ø6.35 / Ø15.88 |
30 |
3 / 30 / 20 |
230 - 240 Volt / 50 Hz / 1 Phase |
2.50-9.79 / 2.19-10.72 |
Outdoor Unit |
3 Core + E |
12 |