Blue Star 1.5 Ton 5 Star Inverter Split AC IA518GXUS
Blue Star
8.4/10
₹49,99034% off
- 1.5 ton
- 5 star
- Split
Families who want to cap how much electricity the AC can use in a month
View details
🏆 Best 1.5 Ton AC🧊 Air conditioner
Brand: Blue Star
Blue Star 1.5 Ton 5 Star Inverter Split AC IC718QCUS
The most efficient 1.5 ton on our list — ISEER 5.85
8.4/10
Our editorial score
Very good — recommended
A main bedroom or living room run for long nights through summer
- Capacity
- 1.5 ton
- Energy rating
- 5 star · ISEER 5.85
- Type
- Split, inverter
- Compressor warranty
- 10 years
About this air conditioner
- ISEER 5.85 — among the most efficient 1.5 ton units we compare, which is what keeps the summer bill down
- 675 declared units a year — about ₹5,400 over a BEE season at ₹8 a unit
- Rated to keep cooling at 56°C outdoors — real headroom for a top floor in a 45°C city
- 10-year compressor warranty and 5-year PCB warranty
- 6-in-1 convertible — runs as a smaller AC on mild nights and draws less power
How it scores
Cooling performance8.3
Build & coil quality8.6
Value for money7.0
Electricity cost9.4
Installation & service8.8
Our verdict
On published figures, this is the most efficient 1.5 ton AC we compare: an ISEER of 5.85 and 675 declared units a year, against 880 for a typical 3-star 1.5 ton — roughly ₹1,600 a year less at ₹8 a unit, and more if you run it longer than the BEE's 1,600-hour season. It is also rated to keep cooling at 56°C, the highest ambient figure on our list, and adds Wi-Fi, six convertible steps, 4-way swing, a PM 2.5 filter and 10 and 5 years of compressor and PCB warranty.
It carries a 2025 BEE label and costs ₹54,990 on Blue Star's store. Its 5,100 W rated capacity is a little below a true 1.5 ton, so it is best in a middle-floor room of up to about 190 sq ft rather than a sun-baked top-floor one.
What we like
- ISEER 5.85 — among the most efficient 1.5 ton units we compare, which is what keeps the summer bill down
- 675 declared units a year — about ₹5,400 over a BEE season at ₹8 a unit
- Rated to keep cooling at 56°C outdoors — real headroom for a top floor in a 45°C city
- 10-year compressor warranty and 5-year PCB warranty
- 6-in-1 convertible — runs as a smaller AC on mild nights and draws less power
What we don't
- Carries a 2025 BEE label — BEE tightens star bands periodically, so compare it with 2026-label units by ISEER rather than stars
- The 5-star premium pays back only with long daily use — for a few hours a night, a 3-star inverter is cheaper overall
Full specifications
| Type | Split AC, inverter compressor |
|---|---|
| Model code | IC718QCUS |
| Capacity | 1.5 ton — 5,100 W rated cooling |
| Energy rating | 5 star (2025 BEE label) |
| ISEER | 5.85 |
| Annual energy use | 675 units/year declared (BEE 1,600-hour season) ≈ ₹5,400 at ₹8/unit |
| Refrigerant | R32 |
| Condenser | Copper |
| Coil protection | anti-corrosive Blue Fins |
| Rated ambient | Cools up to 56°C outdoors |
| Convertible modes | 6-in-1 |
| Wi-Fi | Built in |
| Filters | PM2.5 & anti-microbial filter |
| Indoor noise | 34 dB(A) at the lowest fan speed |
| Indoor unit (H×W×D) | 317 × 950 × 223 mm |
| Warranty | 10 years on the compressor and 5 years on the PCB, as listed by Blue Star |
| Price source | Blue Star official store, checked 2026-09-14 |
Specifications are from manufacturer literature and were checked at the last price-verification date. Brands occasionally revise stage counts, tank sizes and warranty terms without changing the model name — confirm against the current listing before purchasing.
About Blue Star
India's strongest commercial-refrigeration engineering house, now selling domestic refrigerators too. The commercial heritage is the point: Blue Star's deep freezers, visi-coolers and glass-door merchandisers are the default choice for Indian shops and restaurants, and the domestic range inherits that build discipline. For a shop, a clinic or a restaurant, this is usually the first brand to call.
Service: very goodPrice band: midHQ: Mumbai, Maharashtra
Blue Star 1.5 Ton 5 Star Inverter Split AC IC718QCUS — frequently asked questions
What room size is the Blue Star IC718QCUS suitable for?
Rated at 5,100 W, it suits a middle-floor room of up to about 190 sq ft with a 10 ft ceiling, or about 140 sq ft on a top floor with strong afternoon sun. Each person beyond two adds load, and a room open to a kitchen needs more. Our AC tonnage calculator works this out for your exact room.
How much electricity does the Blue Star IC718QCUS use?
Its BEE label declares 675 units a year, measured over a 1,600-hour cooling season — about 5 hours a day for 11 months, or 8 hours a night for 6-7 months. At ₹8 a unit that is roughly ₹5,400 a year, at an ISEER of 5.85. Real use varies with room size, set temperature and how hot your summer is; setting 24-26°C rather than 18°C cuts it substantially.
What warranty does the Blue Star IC718QCUS come with?
10 years on the compressor and 5 years on the PCB, as listed by Blue Star. Warranty on an inverter AC matters most for the compressor and the PCB, the two most expensive parts to replace, so check both are listed on your invoice and register the product with Blue Star after installation.
Does the Blue Star IC718QCUS have Wi-Fi?
Yes, Wi-Fi is built in. You can switch it on before reaching home, schedule it and, on most brands' apps, see energy use — which is the feature that actually changes behaviour.
Where can I buy the Blue Star IC718QCUS at the best price?
We list ₹54,990 from Blue Star official store on 2026-09-14. AC prices move weekly and are often lower on Amazon and Flipkart, especially in bank-offer weeks, so compare all three before buying — and check what installation is included, because extra copper pipe and an outdoor stand are usually charged separately.
Alternatives at a similar price
🏆 Best 2 Ton AC
Blue Star 2 Ton 5 Star Inverter Split AC IC524DNUR
Blue Star
8.4/10
₹54,99030% off
- 2 ton
- 5 star
- Split
Halls and living rooms of 200-230 sq ft run for long hours
View details
🏆 Best Smart AC
Panasonic 1.5 Ton 5 Star Wi-Fi Inverter Split AC CS/CU-HU18CKY5XFMH-P
Panasonic
8.4/10
₹53,48026% off
- 1.5 ton
- 5 star
- Split
Smart-home households in polluted cities
View details
Panasonic 2 Ton 5 Star Wi-Fi Inverter Split AC CS/CU-NU24BKY5W
Panasonic
8.4/10
₹65,99021% off
- 2 ton
- 5 star
- Split
Large rooms cooled for many hours a day
View details