airHome H500

Wall Mounted Inverter Heat Pump AC (RAS/RAC-SH-WHLAE)

airHome H500

Wall Mounted Inverter Heat Pump AC (RAS/RAC-SH-WHLAE)

Our most complete and intelligent air conditioner ever! airHome H500series offers a ductless cooling and heating solution that is flexible, energy efficient, self-cleaning, and that provides optimal comfort. Our flagship FrostWash coil self-cleaning technology is available on both indoor and outdoor units. airHome H500 systems are Energy Star certified. BONUS: airCloud Go wifi adapter is included for smart app remote control.
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Heat, cool and dehumidify effectively

airHome H500 series creates a perfect atmosphere in all seasons. During summer, it can cool the room up to 115°F ambient. For winter, it makes an excellent low-carbon heating solution as it can heat down to 0°F. Like all Hitachi AC's, it also offers dry mode to keep the room fresh and healthy during humid climate. 

Automatically lower the AC as you leave the room

The airHome H500 series includes a motion sensor that detects when the room is occupied or vacant

 With the Smart Eco mode, your AC will automatically adopt an energy-saving temperature when the room has been unoccupied for some time. When someone enters the room again, the AC reverts to its original settings.

 To completely shut off the AC in case of prolonged room vacancy, the Auto Eco-Off option does it for you.

Air Sleep makes a restful night

Before you go to bed, you can activate ‘Air Sleep’ in one touch on the remote controller. The AC will detect when you fall asleep and will adopt quiet mode and slightly reduce cooling/heating to help you sleep better.

 As you wake up the next morning , the AC detects when you resume activity and reactivates cooling/heating to the initial setting.

Connect to airCloud Go app

airHome H500 unit is equipped with airCloud Home wifi adapter. You can modify and schedule the air conditioning operation with your phone. airCloud Go app offers smart functionalities that will bring ultimate convenience to you.

  • Energy cost estimator to monitor costs and receive alerts as you approach your monthly  budget limit

  • The Smart-Fence links the AC operation to your location, for automatic turn off or setback when you leave and automatic precooling/preheating when you get home.

  • Voice command via your favorite smart speakers is also available, pairing airCloud Go with Amazon Alexa and Google Home.

More info on airCloud Go here.

4 air purification & self-cleaning technologies inside your AC

The airHome H500 series includes FrostWash self-cleaning feature and other key technologies to help create a healthier environment at home.

FrostWash self-cleaning process


PM2.5 Active Carbon air purifying filter


Internal clean function keeps components dry


Stainless steel pre-filter


FrostWash self-cleaning process

Our renowned FrostWash technology activates to remove the dirt and mold accumulated on the indoor unit’s heat exchanger coil. ​

It freezes the heat exchanger down to 5ºF to trap pollutants and dust in the ice and then melts them to flush them away. This leaves the unit sanitized and dramatically reduces the possibility of pollutants being spread from the AC unit to throughout the room.​

FrostWash provides dual benefits:​
  • Sanitizing effects: 99% viruses eliminated (1), 99% bacteria eliminated (2), 95% mold reduction (3)​
  • Preservation of airflow capacity: Our tests show that systems with FrostWash are 3×better at maintaining airflow performance than those without this technology. (4)

PM2.5 Active Carbon air purifying filter

A special Active Carbon air purifying filter is embedded inside the indoor unit to  improve indoor air quality​
  • Remove 99.00% of particulate matters (5) as small as 2.5μm (micron). ​
  • Effective against anti-VOC and deodorizes the room, leaving the air fresh, breathable, and clean. ​

Internal clean function keeps components dry

To prevent mold formation inside the indoor unit, whenever the unit is switched off, the indoor unit automatically blows air through internal components to dry them and prevent the build-up of mold – the primary cause of those nasty odors (6).

Stainless steel pre-filter

All air conditioners include a pre-filter to traps big particles present in the air and prevent them from circulating through the unit.
Made of stainless steel, the pre-filter is easy to wash and does not corrode over time, for durable performance.


INNOVATION: FrostWash cleans the outdoor condensing coil too

Exclusive Hitachi: FrostWash technology keeps the outdoor coil clean effortlessly! As dirt gets trapped in the fins that mold may grow on, FrostWash removes the accumulated dirt by freezing and melting it. The coil can be cleaned effortlessly for durable airflow performance over the years.

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4 air purifications and self-cleaning technologies to improve the indoor air quality.
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The PM2.5 Active Carbon filter captures small particulate matters and Volatile organic compounds (VOC) that may cause allergic reactions.
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FrostWash cleans up the internal heat exchanger coil effortlessly.
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Inverter technology ensures energy-efficient and smooth cooling/heating operation.
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Complete DC Power system with Inverter

The airHome’s DC Power system features quieter operation and 10% more efficiency than non-inverter AC systems.​

airHome H500 is equipped with a DC fan motor inside both the indoor unit and outdoor unit, and a DC Inverter compressor for a complete superior performance.

Additional benefits:

Quiet operation down to 27dB(A)
The silent button is a shortcut to switch to quiet slow fan speed, down to 27dB (A). (7)
Filter cleaning reminder
To help you maintain the AC performance, an LED indicator on the indoor unit lights up to alert when it’s time to clean the filter.
Total airflow control
You can select the preferred airflow direction with your remote controller and make it swing vertically or horizontally.
Powerful mode
‘Powerful’ button can be used during heating/cooling operation. It temporarily increases the compressor speed for a faster reach of the desired temperature.


(1) Tested by Kitasato Research Center of Environmental Science. Test No. 2020_0650. Test model: RAS-X22K Reduction effects of virus was observed by operating FroshWash™ once.​
(2) Tested by Kitasato Research Center of Environmental Science. Test No. 2020_0650. Test model: RAS-X22K Reduction effects of bacteria was observed by operating FroshWash™ once.​
(3) Tested by Kitasato Research Center of Environmental Science. Test No. 2020_0650. Test model: RAS-X22K Reduction effects of mold was observed by operating FroshWash™ once.​
(4) Two identical units were tested for comparison; with and without FrostWash. Test chamber simulated approx. 2 years of dust and oil build up which may be experienced in a typical home environment. Airflow performance was tested before and after being in the chamber. Unit without FrostWash exerpienced an 18% drop in airflow performance. Unit with FrostWash experienced only 6% performance drop. Tested at Johnson Controls-Hitachi Tochigi factory, Japan.                                                          (5) Combination of Stainless steel pre-filter PM2.5 Active Carbon air purifying filter tested at Johnson Controls-Hitachi Tochigi factory, Japan. Test Method : JEM1467 (The Japan Electrical Manufacturers' Association). Test was done under continuous cooling operation at high fan speed of RAS-VJ24CLT in a room with size of 25m3 and 25℃ for 300 minutes.
(6) The mold guard function can prevent mold growth inside indoor unit but not remove existed mold.
Duration of mold guard operation takes approximately 60min, however it slightly varies depending on models and current temperature/humidity conditions.
(7) 27dB(A) is the sound pressure level of airHome H500 models of 7,000, 9,000 and 12,000 BTU/h cooling capacity in silent mode. Bigger capacity models have a higher noise level.