Description
ISEER 3.85 On Just 913 Watts.
24-Metre Air Throw · 36 dB Quiet · 100% Inner-Grooved Copper.
Sized for bedrooms, study rooms and compact living areas of 100–120 sq ft · 706.76 units a year · fixed speed rotary compressor · R32 green refrigerant · Ambience Light · My Mode with 3 presets · Auto Coil Dry · dust filter · 3M coating on the outdoor unit · Tropical Design rated to 52°C
706.76 units is the number that actually lands on your bill. A 1-ton bedroom AC in Delhi NCR runs hard from March to October — and at ISEER 3.85 with a 913-watt draw, this Hitachi is doing that work on a genuinely small appetite for power. Put differently: it cools a 120 sq ft room on roughly the running load of a small kitchen appliance, night after night, through the months when the meter is the one thing everyone in the house watches. Three-star efficiency on a 1-ton unit is where the savings compound quietly, without you ever having to think about it.
Ambience Light and My Mode — Senpai's two ideas you use every day
Hitachi's Senpai line is built around the interactions you repeat a hundred times a season. Ambience Light turns the front panel into a real-time visual read on room conditions, so you know where the room is from across the bed without hunting for the remote or squinting at a tiny display. My Mode stores three complete settings — your temperature, your fan speed, your mode — and recalls any of them at one press: one for sleeping, one for the afternoon, one for when guests fill the room. Five fan speeds sit underneath that, giving finer control than the usual low-medium-high. It is a small AC that behaves like a considered one.
100% inner-grooved copper, and 3M coating where the outdoor unit needs it
Inner-grooved copper tubes create turbulent refrigerant flow that raises the heat-transfer rate above smooth-bore tubing — the room cools faster and the compressor works less to hold it there. Outside, 3M coating is applied to the outdoor unit's brazing joints, the exact points that corrode first when a unit sits through Delhi's monsoon humidity and then a winter of heavy particulate. Copper also means simple, inexpensive servicing years down the line, from any technician in the city.
❄️ Comfort you set once and forget
My Mode — 3 Presets
Three saved temperature, fan and mode combinations, one press each
Auto Coil Dry
Dries the indoor coil after every cycle so the air stays odour-free
5 Fan Speeds
Finer control than low-medium-high, for night versus afternoon
Filter Clean Indicator
Reminds you to wash the dust filter, before cooling quietly drops off
🎛️ Built for Delhi NCR, checked before it ships
Tropical Design 52°C
Engineered to keep cooling efficiently through peak Indian summer
Wave Blade — 36 dB
Blade geometry that cuts air-cutting noise at the source
43-Point Inspection
Every unit clears Hitachi's 43 factory quality tests
78 × 22.2 × 28 cm
A compact indoor unit that suits narrow wall runs in small flats
🛠️ What is engineered in
R32 cuts the carbon footprint of the refrigerant charge while cooling just as hard — and every service network across Delhi NCR stocks and handles it routinely.
A small room fails on reach as often as a large one — the bed against the far wall stays warm while the area under the unit turns cold. A 24-metre throw means a 100–120 sq ft room settles evenly, so you can set a higher temperature and still feel cooler.
The stale smell an AC gives off on switch-on comes from a damp indoor coil, and Delhi's monsoon guarantees one. Auto Coil Dry dries the coil automatically after each cooling cycle, preventing bacterial build-up at the source and keeping airflow uninterrupted.
The fixed-speed rotary compressor is simple, proven and quiet, and the 3 Star rating with ISEER 3.85 keeps the annual consumption at 706.76 units. For a bedroom that runs eight months of the year, that is where the real saving sits.
Every unit passes Hitachi's 43 quality control tests before it leaves the factory — performance, safety and refrigerant integrity among them. That is the validation that keeps problems out of your first summer with it.
| Brand / Model | Hitachi RAS.B312PCAIBA1 ✅ |
| Series | airHome Senpai Series ✅ |
| Type | Split Air Conditioner · Wall Mounted ✅ |
| Capacity | 1 Ton — rooms 100–120 sq ft ✅ |
| Energy Rating | 3 Star BEE · ISEER 3.85 ✅ |
| Annual Energy Consumption | 706.76 units ✅ |
| Power Consumption | 913 Watts ✅ |
| Compressor | Fixed Speed Rotary ✅ |
| Condenser Coil | 100% Copper · Inner Grooved Tubes ✅ |
| Refrigerant | R-32 Green Gas ✅ |
| Tropical Design Rating | Up to 52°C ✅ |
| Air Throw | Up to 24 Metres ✅ |
| Noise Level | 36 dB ✅ |
| Outdoor Unit Protection | 3M Coating ✅ |
| Air Filter | Dust Filter with Auto Coil Dry ✅ |
| Filter Reminder | Filter Clean Indicator ✅ |
| Fan Speeds | 5 ✅ |
| Display | Ambience Light ✅ |
| My Mode Presets | 3 ✅ |
| Control Type | Remote ✅ |
| Indoor Unit (W×D×H) | 78 × 22.2 × 28 cm ✅ |
| Quality Testing | 43-Point Factory Inspection ✅ |
| Colour | White ✅ |
| Country of Origin | Made in India 🇮🇳 ✅ |
| Installation | Free installation assistance available on request ✅ |
| Warranty | 1 Year Comprehensive · 5 Years Compressor ✅ |
Why buy from Mahajan Electronics?
- We match tonnage to your actual room before you buy
- 45+ years of trust in premium home appliances, since 1981
- 24-hour delivery across Delhi NCR
- GST invoice — save up to 18% on business purchases
- Authorised dealership with genuine brand warranty
- Easy EMI options available
- Free installation assistance on request
- Raja Garden · Jail Road · Dabri Mor
Order today. Delivered in 24 hours.
Hitachi RAS.B312PCAIBA1 airHome Senpai · 1 Ton · 3 Star · ISEER 3.85 · 24-Metre Air Throw · 36 dB · 100% Inner-Grooved Copper · 5-Year Compressor Warranty
Image for reference only. GST savings apply on eligible business purchases as per tax rules.
