🏆 Best 1.5 Ton AC
Blue Star 1.5 Ton 5 Star Inverter Split AC IC718QCUS
Blue Star
8.4/10
₹54,99025% off
- 1.5 ton
- 5 star
- Split
A main bedroom or living room run for long nights through summer
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🧊 Air conditioner
Brand: Blue Star
Blue Star 1.5 Ton 5 Star Inverter Split AC IA518GXUS
Blue Star's Wi-Fi 5-star 1.5 ton with hard energy limits
8.4/10
Our editorial score
Very good — recommended
Families who want to cap how much electricity the AC can use in a month
- Capacity
- 1.5 ton
- Energy rating
- 5 star · ISEER 5.63
- Type
- Split, inverter
- Compressor warranty
- 10 years
About this air conditioner
- App energy management can cap the AC by hours or by kWh — a hard limit on the summer bill, not just a readout
- ISEER 5.63 — among the most efficient 1.5 ton units we compare, which is what keeps the summer bill down
- Rated to keep cooling at 54°C outdoors — real headroom for a top floor in a 45°C city
- 10-year compressor warranty and 5-year PCB warranty
- Built-in Wi-Fi app control with Amazon Alexa and Google Home
How it scores
Cooling performance8.1
Build & coil quality8.6
Value for money7.5
Electricity cost9.1
Installation & service8.8
Our verdict
Blue Star's energy management lets you cap the AC by hours or by kWh from the app, which is unusually practical for a household that wants to control a summer bill rather than just watch it climb. Around it sit an ISEER of 5.63, Alexa and Google voice control, 4-way swing, a 54°C rating, a 2026 BEE label and 10 and 5 years of compressor and PCB warranty.
For ₹5,000 more, Blue Star's IC718QCUS has a higher 5.85 ISEER, six convertible steps and a PM 2.5 filter. Choose the IA518GXUS if voice control and energy caps matter more to you than those.
What we like
- App energy management can cap the AC by hours or by kWh — a hard limit on the summer bill, not just a readout
- ISEER 5.63 — among the most efficient 1.5 ton units we compare, which is what keeps the summer bill down
- Rated to keep cooling at 54°C outdoors — real headroom for a top floor in a 45°C city
- 10-year compressor warranty and 5-year PCB warranty
- Built-in Wi-Fi app control with Amazon Alexa and Google Home
What we don't
- For ₹5,000 more, Blue Star's own IC718QCUS has a higher 5.85 ISEER, 6-in-1 modes and a PM 2.5 filter
- The BEE annual-units figure is not on the product page, so a rupee running cost has to be read off the label on the unit
Full specifications
| Type | Split AC, inverter compressor |
|---|---|
| Model code | IA518GXUS |
| Capacity | 1.5 ton — 5,100 W rated cooling |
| Energy rating | 5 star (2026 BEE label) |
| ISEER | 5.63 |
| Refrigerant | R32 |
| Condenser | Copper |
| Coil protection | anti-corrosive Blue Fins |
| Rated ambient | Cools up to 54°C outdoors |
| Wi-Fi | Built in — Amazon Alexa and Google Home |
| Indoor unit (H×W×D) | 336 × 1114 × 229 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 IA518GXUS — frequently asked questions
What room size is the Blue Star IA518GXUS 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 efficient is the Blue Star IA518GXUS?
Blue Star publishes an ISEER of 5.63 for it. ISEER is cooling delivered per unit of electricity across a typical Indian season, so a higher number means a lower bill for the same cooling — 3-star inverter splits usually sit around 4.3-4.5 and the best 5-star units near 5.8. Blue Star does not publish the BEE annual-units figure on the product page, so a rupee estimate cannot be made from the brand's own numbers.
What warranty does the Blue Star IA518GXUS 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 IA518GXUS have Wi-Fi?
Yes, Wi-Fi is built in, with Amazon Alexa and Google Home. 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 IA518GXUS at the best price?
We list ₹49,990 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.
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