Date: 28-08-2026
In the premium residential air conditioning segment, Hitachi's RAC airHome system is a top choice for Vietnamese families. To help users easily choose the ideal cooling solution, U.P Tech – a company with over 25 years of experience distributing HVAC equipment – provides a detailed comparison between the airHome 600 and airHome 500 versions. Understanding the technological differences of Hitachi air conditioners will help you invest correctly according to your needs and optimize long-term operating costs.
Overview of Hitachi RAC airHome 600 and airHome 500 series systems
The airHome product line is Hitachi's latest range of residential air conditioners (RAC - Room Air Conditioners), integrating comprehensive cooling and health care technologies. The two segments, Hitachi airHome 600 and airHome 500, are clearly positioned to meet the needs of different consumer groups:
- Hitachi airHome 600: The top-of-the-line models (RAK/RAC-VH-PHASV) fully incorporate leading-edge technological breakthroughs such as intelligent sensors, active sterilization, and built-in Wi-Fi.
- Hitachi airHome 500: The premium standard series (RAK/RAC-GH-PHASV) aims for quiet operation, durability, and energy efficiency at a reasonable cost.
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→ See more: Why is Inverter technology in Hitachi RAC systems a popular choice for many families?
Detailed comparison table of two models in the Hitachi airHome RAC system
Below is a summary table of the technical specifications and key features between the airHome 600 and airHome 500, helping consumers easily identify the differences:
| Comparison criteria | Hitachi airHome 600 | Hitachi airHome 500 |
| Market segmentation | The highest-end series (RAK/RAC-VH-PHASV) | 5-star standard line (RAK/RAC-GH-PHASV) |
| Smart sensor | Integrated Smart Eco sensor: Automatically detects empty rooms and reduces power output after 20 minutes. | No motion sensor; operates with standard inverter. |
| FrostWash cleaning technology | Dual FrostWash: Automatically cleans frost buildup on both the indoor and outdoor units. | FrostWash Single: Self-freezing evaporator cleaning |
| Air purification & disinfection | The ViroSense Z1 filter combines AQtiv-Ion ion generation technology to kill viruses and bacteria. | Standard antibacterial filter, maintaining clean airflow. |
| Automatic sleep temperature adjustment | SleepSense (Air Sleep): Intelligently adjusts temperature according to the user's circadian rhythm. | Good Sleep Timer: Sets a timer to increase the temperature at fixed intervals. |
| Connect the airCloud Go app. | Built-in Wi-Fi: Remote control, Smart-Fence positioning, and power management. | Connection option: An additional extension adapter is required. |
| Energy Performance Rating (CSPF) | Achieving a very high rating (CSPF up to 6.48), it offers outstanding energy savings. | Achieved the 5-star energy efficiency rating from the Ministry of Industry and Trade. |
| Common power range | Priority is given to medium to large rooms (9,000 BTU – 24,000 BTU). | Wide range of capacities (9,200 BTU / 1.0 HP – 23,000 BTU / 2.5 HP) |
Four core technological differences between the Hitachi airHome 600 and 500 RAC systems
Smart Eco motion sensor and energy saving capabilities
The most notable feature of the Hitachi airHome 600 RAC system is its Smart Eco motion sensor. The device scans the space to detect the presence of people. If the room is empty with no movement for 20 minutes, the device will automatically reduce its operating power and may activate an auto-shutoff mode to avoid wasting energy.
Meanwhile, the airHome 500 version maintains a 5-star energy efficiency rating thanks to Vector DC Inverter technology, allowing the machine to operate smoothly and stably without the need for a motion sensor.
Dual FrostWash self-cleaning technology (Indoor and Outdoor units)
Both product lines are equipped with the exclusive FrostWash self-cleaning technology – a mechanism that freezes the heat exchange surface to -15°C and then rapidly melts it to wash away dirt and mold.
However, the airHome 600 upgrades the experience with Dual FrostWash, which self-cleans both the indoor and outdoor units. Cleaning the outdoor unit helps the unit dissipate heat more effectively, maintaining consistent cooling performance over the years. In contrast, the airHome 500 focuses its FrostWash technology on the indoor unit.
→ See more: Hitachi RAK/RAC: Exclusive FrostWash self-cleaning technology 2026
Air purification capabilities and AQtiv-Ion antibacterial technology
In terms of family health, the Hitachi airHome 600 air conditioner excels with its advanced multi-stage filtration system. The device combines the ViroSense Z1 filter and AQtiv-Ion negative ion technology, helping to neutralize bacteria, viruses, and allergens in the air.
The airHome 500 series still ensures a clean atmosphere thanks to its standard dust filter, suitable for typical living spaces that do not require intensive disinfection.
SleepSense mode and smart app connectivity with airCloud Go
The Hitachi airHome 600 RAC system has a built-in Wi-Fi module, allowing for instant connection to the airCloud Go app on your smartphone without needing to purchase additional accessories. You can remotely turn on the air conditioner and set a geo-location (Smart-Fence) schedule for it to automatically start when you're about to arrive home. Additionally, the SleepSense feature automatically increases the temperature slightly once you're in a deep sleep, providing comfort and preventing you from feeling cold late at night.
In the airHome 500 version, Wi-Fi connectivity is an optional extra, and the sleep monitoring feature uses the traditional Good Sleep Timer.
Which Hitachi RAC system version is best for your family?
According to a technical representative from Johnson Controls - Hitachi Air Conditioning:
"The airHome product line is designed to simplify maintenance and improve indoor air quality. The tiered feature levels allow consumers to optimize their investment budget while still owning core Japanese technology."
Based on your actual needs, you can consider the following options:
- When should you choose Hitachi AirHome 600?: Ideal for families with young children, the elderly, or anyone who loves smart technology. You want to experience the full range of ion sterilization features, automatic power-saving sensors, and readily available Wi-Fi connectivity.
- When should you choose Hitachi AirHome 500?: Are you looking for a 5-star Hitachi Inverter air conditioner that operates extremely quietly, is highly durable, provides instant cooling (Powerful Cooling), and offers a more economical initial investment?
→ See more: Hitachi RAK/RAC: Powerful Cooling for instant cooling on hot days
In summary, the Hitachi airHome 600 and airHome 500 RAC systems are high-quality cooling solutions that excel at maintaining a fresh living environment while ensuring energy efficiency. You can easily select the model that best suits your budget and preferences regarding smart technology. For a competitive quote and expert advice, contact U.P Tech - a leading distributor of Hitachi air conditioners - today via the hotline at 1800 6202.
U.P. TECHNOLOGY AND TRADING CO., LTD.
Hotline: 1800 6202
Email: vu@uptech.com.vn
Website: https://uptech.com.vn
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Ha Noi Transaction Office: 14th Floor, ADI Building, Lot HH03, To Huu Street, Ha Dong Ward, Hanoi City
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