Features
Our Refrigerators are Made in Japan
And Stocked with Innovative Features
Harnessing the best of Hitachi technology, we derive immense pleasure in delivering eco-friendly refrigerators through proprietary technologies. Its unique Platinum Catalyst found in both the Vacuum and Aero-care Vege Compartments, helps sustain freshness of stored food. Other complementary features like Vacuum Insulation Panels and advanced Frost Recycling Cooling work in synergy for greater energy efficiency. Hitachi Made in Japan refrigerators exude external aesthetic beauty and are also made for the intelligent and innovative homes of the future. With Hitachi, you’ve got it made.
Vacuum-sealed for Freshness
Platinum Catalyst with Ruthenium Vacuum Compartment
The secret to longer-lasting freshness is reduced oxygen levels. Hitachi’s original preservation extracts air to maintain approx. 0.8 atmospheric pressure of vacuum preservation. With unique Platinum Catalyst, the meat, fish and dairy products are kept fresh and nutritious, and ready cook without defrosting.
Vacuum Compartment
Nutrition Retention
Stay healthy. A vacuum environment prevents oxidisation and retains nutrients inside the food.
DHA Value in Mackerel after 7 Days of Storage*
Initial Value 0.45 g / 100 g
100%*
Refrigerator Compartment
57%*
Vacuum Compartment
71%*
* Tested by Hitachi. Tested Model : R-WX74K (equivalent model to R-ZXC/ZX740R). The effect may differ depending on types or freshness of food stored, and does not extend to best-before and expiration dates.
Vacuum Compartment
Nutrition Retention
Stay healthy. A vacuum environment prevents oxidisation and retains nutrients inside the food.
Vitamin C Value in Mango after 7 Days of Storage*
Initial Value 49.9 mg / 100 g
100%*
Refrigerator Compartment
71%*
Vacuum Compartment
84%*
Vitamin C Value in Kiwi after 7 Days of Storage*
Initial Value 97.3 mg / 100 g
100%*
Refrigerator Compartment
90%*
Vacuum Compartment
95%*
* Tested by Hitachi. Tested Model : R-WX74K (equivalent model to R-ZXC/ZX740R). The effect may differ depending on types or freshness of food stored, and does not extend to best-before and expiration dates.
Vacuum Compartment
Freshness Preservation
Excellent freshness preservation with Hitachi technology for keeping food fresh.
K-Value in Tuna after 3 Days of Storage*
Vacuum Compartment : 17.9%* Initial Value : 12.0%*
K-Value in Chicken Breast after 7 Days of Storage*
Vacuum Compartment : 45.3%* Initial Value : 38.1%*
* Tested by Hitachi. Tested Model : R-WX74K (equivalent model to R-ZXC/ZX740R). K-value is an indication of freshness. The lower the value, the fresher the item. K-value of 20% or higher is not suitable for consuming raw and K-value of 60% or higher is not suitable for consumption. The effect may differ depending on types or freshness of food stored, and does not extend to best-before and expiration dates.
Vacuum Compartment
Flavour Preservation
Excellent preservation of original flavour and texture, by minimising the drips while keeping them fresh without getting frozen and hydrated without the need for troublesome wrapping.
Tuna after 3 Days of Storage*
Drip Loss 2.82 g / 100 g*
Freezer Compartment (Natural Thaw)
Drip Loss 0.47g / 100 g*
Vacuum Compartment
Cheese after 3 Days of Storage*
Refrigerator Compartment
Vacuum Compartment
* Tested by Hitachi. Tested Model : R-WX74K (equivalent model to R-ZXC/ZX740R). The effect may differ depending on types or freshness of food stored, and does not extend to best-before and expiration dates.
Vacuum Compartment
Quick Seasoning
Quick seasoning is made possible because the Vacuum Compartment removes air from stored food, enabling seasoning to be absorbed at a faster rate.* So, with less time required for seasoning and cooking, there’s more time for eating!
Marinated Seasoning
Rehydration
* Tested by Hitachi. Tested Model : R-G6700D (equivalent atmospheric pressure to R-ZXC/ZX740R). Penetration rates may differ depending on food seasoning used.
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Refreshing Technology Maintains 0.8 Atmospheric Pressure Vacuum*
Hitachi innovation at its finest and most consistent : the sealed pressure-resistant vacuum realises and maintains the vacuum environment. A vacuum pump extracts air and reduces oxygen to achieve approx. 0.8 atmospheric pressure throughout usage.
* Vacuum means a space where the pressure is lower than the atmospheric pressure. The pressure in Vacuum Compartment has approx. 0.8 atmospheric pressure, which is lower than the standard atmospheric pressure, hence, Hitachi considers this a vacuum.
Vacuum Compartment
A Tale of 2 Temperature Zones
Now, you can truly chill. Store your food without freezing by selecting a suitable temperature for the stored items, and help prevent deterioration of flavours and texture.
Vacuum Sub Zero Mode Approx. -1°C
Vacuum Chilled Mode Approx. +1°C
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Approx. 2°C Moisture Air Keeps Food Fresh
Moisture Cooling
Optimum-moisture chilled air and lower temperature of approx. 2°C retains flavours and freshness.*
* Tested by Hitachi. The effect may differ depending on conditions and amount of food stored.
Moisture Cooling
Freshness Retention
Storing at low temperature retains the freshness, and suppresses mould growth of cooked or pre-cooked items.*
* Tested by Hitachi. The effect differs depending on the type and freshness of food.
Moisture Cooling
Suppresses Dehydration & Discolouration
Storing at optimum humidity environment retains the freshness of your food, and suppresses dehydration and discolouration without rapping*.
Potato Salad Stored after 1 Day
Salad Stored after 1 Day
With Moisture Cooling
Without Moisture Cooling
* Tested model : R-HX60N (equivalent to R-HW610NS/530NS) for With Moisture Cooling and R-XG56J for Without Moisture Cooling. The effect differs depending on the type and freshness of food.
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The Power of Platinum for Fruits & Vegetables
Aero-Care Vege Compartment with Platinum Catalyst
The uniquely-designed compartment sustains freshness and nutrients of the vegetables and fruits with Platinum Catalyst. In addition, the improved airtight seal of compartment increases and controls humidity.
Aero-Care Vege Compartment
Freshness and Nutrition of Vegetables & Fruits
Under the power of a Platinum Catalyst, food achieves amazing results. With increased carbon dioxide produced, vegetable respiration is controlled and consumption of nutrients from the environment limited to prevent loss of food freshness.
Moisture Retention in Spinach after 7 Days of Storage*
Approx. 81.1%
Moist Vege Compartment without Platinum Catalyst
Approx. 97.5%
Aero-Care Vege Compartment with Platinum Catalyst
* Tested by Hitachi. Test model for Aero-Care Vege Compartment : R-WX74K (equivalent model to R-ZXC/ZX740R), for Moist Vege compartment : R-G6700D. The effect may differ depending on types and amount of food stored.
Aero-Care Vege Compartment
Freshness and Nutrition of Vegetables & Fruits
Under the power of a Platinum Catalyst, food achieves amazing results. With increased carbon dioxide produced, fruit respiration is controlled and consumption of nutrients from the environment limited to prevent loss of food freshness.
Retain Vitamin C in Orange after 7 Days of Storage*
Initial Value 78.2 mg / 100 g
100%*
Moist Vege Compartment
84%*
Aero-Care Vege Compartment
92%*
* Tested by Hitachi. Test model for Aero-Care Vege Compartment : R-WX74K (equivalent model to R-ZXC/ZX740R) , for Moist Vege compartment : R-G6700D. The effect may differ depending on types and amount of food stored.
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Retains All the Natural Goodness of Your Food
Delicious Freezing Technology
Delicious Freezing technology seals in the original textures, flavours and nutritional value of fresh and cooked products. This is achieved by freezing food very quickly past the maximum ice crystal formation zone on a big aluminium tray.
Delicious Freezing
Seals in Flavours of Meat and Fish
When the Temperature Sensor detects the temperature of hot food, it will automatically switch the setting and freeze it very quickly to past the maximum ice crystal formation zone. This minimises dripping by reducing ice crystal size, thus sealing in flavours of meat and fish.
Lamb after 10 Days of Storage*
Drip Loss 0.56 g / 100 g*
Regular Freezing (Natural Thaw for 4 Hours)
Drip Loss 0.26 g / 100 g*
Delicious Freezing (Natural Thaw for 4 Hours)
* Tested by Hitachi. Tested model for Delicious Freezing : R-XG6700G (equivalent model to R-WX670R). The effect differs depending on the models and conditions.
Delicious Freezing
Prevents Nutritional Loss in Vegetables
When the Temperature Sensor detects the temperature of hot food, it will automatically switch the setting and freeze it very quickly to past the maximum ice crystal formation zone. This achieves greater Vitamin C preservation.
Vitamin C Content of Broccoli*
(mg / 100 g)
Raw Broccoli Initial Value
149.8 mg*
Regular Freezing
94.7 mg*
Delicious Freezing
115.0 mg*
* Tested by Hitachi. Tested model for Delicious Freezing : R-XG6700G (equivalent model to R-WX670R). The effect differs depending on the models and conditions.
Delicious Freezing
Retains Original Rice Flavours
When the Temperature Sensor detects the temperature of hot food, it will automatically switch the setting and freeze it very quickly to past the maximum ice crystal formation zone. This prevents deterioration of food quality.
Gelatinization Degree of Rice*
Gelatinization Degree (%)
Freshly-cooked Rice
100%
Regular Freezing
93.3%
Delicious Freezing
94.7%
* Tested by Hitachi. Tested model for Delicious Freezing : R-XG6700G (equivalent model to R-WX670R). The effect differs depending on the models and conditions.
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Breakthrough Energy Saving Technology
VIP - Vacuum Insulation Panel
VIP is a thin vacuum-insulated panel with extremely high heat insulation performance. It achieves super energy saving compared to conventional urethane, by preventing external heat entry or internal cold air escape.
Flexible Storage Design
Shelves and Pockets with Adjustable Height
The heights of top two tempered glass shelves and the door pockets can be adjusted to match the size of the food items and your needs.
Tech Spec
Model Name
R-HW620RS
Gross Capacity (L)
Total : 648
Refrigerator Compartment : 287
Vacuum Compartment : 43
Freezer Compartment (Upper + Lower + Ice) : 200
Vegetable Compartment : 118
Storage Capacity (L)
Total : 475
Refrigerator Compartment : 273
Vacuum Compartment : 15
Freezer Compartment(Upper + Lower + Ice) : 107
Vegetable Compartment : 80
Cooling System
Independent Cooling System
Inverter Compressor
Eco Intelligent Control
Refrigerant : R600a
Vacuum Insulation Material (VIP)
Refrigerator Compartment
Vacuum Compartment : Platinum Catalyst with Ruthenium -1℃
Moisture Cooling
LED Lighting
Tempered Glass Shelf
Height Adjustable Pockets
Height Adjustable Shelves
Automatic Ice Making Compartment
Independent Ice Storage
Quick Ice Making
Automatic Cleaning Function
Water Filter
Stop Ice Making
Signal for Water Supply
Lower Freezer Compartment
Aluminum Tray （Top）
Delicious Freezing （Top）
3-layer Freezer Case
Vegetable Compartment
Aero-care Vege Compartment (lower case)
2-layer Vegetable Case
Other Features
Triple Deodorisation Filter
Lifestyle Memory Control
Energy Saving Mode
Control Panel (Touch Screen Controller)
Flat Back (No clearance required on the back side)
Door-Opened Alarm
Refrigerator Compartment
Ice Making Compartment
Lower Freezer Compartment
Weight (kg)
105
Dimensions (WxHxD) (mm)
685 x 1,833 x 738
Body Colour
Crystal Black (XK) / Crystal Champagne (XN) / Crystal White (XW)