Description
17,500 BTU That Works At 52°C.
24-Metre Air Throw · 39 dB · 100% Inner-Grooved Copper.
Sized for medium rooms of 150–180 sq ft · fixed speed compressor · SEER 3.82 · R32 eco-friendly gas · Ambience Light · My Mode with 3 profiles · Auto Coil Dry · Filter Clean Indicator · 3M coating on the outdoor unit brazing joints · Star White finish with UV-protective paint
The week that decides an AC is the one where Delhi sits at 46°C and the outdoor unit is baking on a west-facing ledge. Hitachi's Tropical Design rates this Senpai to keep working efficiently with ambient temperatures up to 52°C — which is the whole point of buying a tropical-spec machine rather than a generic one. Put 17,500 BTU behind that and a 150–180 sq ft room comes down quickly even on a top floor, even in the afternoon, even when the terrace above has been absorbing sun since ten in the morning. This is the specification that matters most in June, and the reason the room still feels right in the third summer.
Ambience Light and My Mode — Senpai's design thinking, where you touch it
The Senpai series is Hitachi's answer to an AC that stays elegant and stays intuitive. Ambience Light turns the front panel into an immersive read on room conditions, so you understand where the room is at a glance and adjust with intent rather than guesswork. My Mode saves up to three complete cooling profiles — temperature, fan speed and mode together — and brings any of them back at a single press, which is how a shared bedroom, an afternoon living room and a full house of guests each get their own setting without anyone fiddling. Five fan speeds sit underneath for finer control than the usual three. The Star White finish carries UV-protective paint so the unit keeps the clean, refined look it had on installation day.
100% inner-grooved copper, 3M coating on the joints that matter
Hitachi's 100% inner-grooved copper tubes create turbulent refrigerant flow that lifts the heat-transfer rate above smooth-bore tubing — faster cooling, and less work for the compressor to hold the room. On the outdoor unit, 3M coating goes onto the brazing joints, the exact points that corrode first through Delhi NCR's monsoon humidity and its winter particulate load. Copper also keeps servicing simple and inexpensive for the life of the unit, from any technician in the city.
❄️ Comfort you set once and forget
My Mode — 3 Profiles
Three saved cooling profiles, each recalled at a single press
Auto Coil Dry
Clears moisture from the indoor unit 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 clean the filter so cooling stays powerful
🎛️ Built for Delhi NCR, checked before it ships
Tropical Design 52°C
Efficient cooling right through the peak of an Indian summer
Wave Blade — 39 dB
Blade geometry that reduces air-cutting noise at the source
43 Quality Tests
Rigorous factory testing behind every unit that ships
105 × 25 × 29.4 cm
Indoor unit sized to sit cleanly above a standard door or window
🛠️ What is engineered in
A 1.5-ton unit in Delhi NCR faces 45°C summers, monsoon humidity and a winter of heavy particulate in the same twelve months. Copper, coating and tropical-spec design are what carry it through all three.
Cooled air is engineered to travel right across the room, so a 150–180 sq ft bedroom or living room settles at one temperature instead of freezing near the unit and staying warm at the far wall. Wider layouts and open kitchen-dining rooms benefit the most.
The musty smell on switch-on comes from moisture sitting in the indoor unit, and Delhi's monsoon guarantees it. Auto Coil Dry removes that moisture after use, cutting off the cause of odour and keeping airflow uninterrupted through the humid months.
An indoor unit lives in direct window light for years, and ordinary white plastic drifts to cream. The UV-protective paint on the Star White finish is specified against exactly that — the unit looks as refined in year five as the day it went up.
The fixed speed compressor is simple, proven and quiet, and the published annual consumption of 1039.62 kWh gives you a real figure to plan around for a room running eight months of a Delhi cooling season.
| Brand / Model | Hitachi RAS.B318PCAIBA1 ✅ |
| Series | Senpai / airHome Series ✅ |
| Type | Split Air Conditioner · Wall Mounted ✅ |
| Capacity | 1.5 Ton — rooms 150–180 sq ft ✅ |
| Cooling Power | 17,500 BTU ✅ |
| Energy Rating | 2 Star BEE · SEER 3.82 ✅ |
| Annual Energy Consumption | 1039.62 kWh ✅ |
| Compressor | Fixed Speed Compressor ✅ |
| Refrigerant | R32 Eco-Friendly Gas ✅ |
| Condenser Coil | 100% Copper with Inner Grooved Tubes ✅ |
| Air Throw | Long Air Throw up to 24 Metres ✅ |
| Fan Speeds | 5 ✅ |
| Noise Level | 39 dB ✅ |
| Air Filter | Pre-Filter with Auto Coil Dry ✅ |
| Special Features | My Mode · Ambience Light · Auto Coil Dry · Wave Blade Design · Filter Clean Indicator ✅ |
| Outdoor Unit Protection | 3M Coating on Brazing Joints ✅ |
| Climate Performance | Tropical Design — efficient up to 52°C ambient ✅ |
| Quality Testing | 43 Factory Quality Tests ✅ |
| Power Supply | 230 V ✅ |
| Indoor Unit (W×D×H) | 105 × 25 × 29.4 cm ✅ |
| Weight | 47.5 kg ✅ |
| Colour | Star White ✅ |
| Country of Origin | Made in India 🇮🇳 ✅ |
| 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
- 100% genuine Hitachi with full manufacturer warranty support
- Rated 4.7★ on Google by thousands of customers
- Personalised assistance on call or WhatsApp: 9710000251
- Raja Garden · Jail Road · Dabri Mor
Order today. Delivered in 24 hours.
Hitachi RAS.B318PCAIBA1 Senpai · 1.5 Ton · 2 Star · 17,500 BTU · 52°C Tropical Design · 24-Metre Air Throw · 39 dB · 100% Inner-Grooved Copper · 5-Year Compressor Warranty
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