
Blue Star 1.5 Ton 5 Star Inverter Split AC IC718QCUS
Blue Star
- 1.5 ton
- 5 star
- Split
A main bedroom or living room run for long nights through summer
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Brand: Samsung
5-star Samsung with an ISEER of 5.77
Our editorial score
Very good — recommended
Efficiency-first buyers with a middle-floor room of up to about 180 sq ft
An ISEER of 5.77 puts this among the most efficient units on our list, close to Blue Star's IC718QCUS and Panasonic's HU18. It pairs that with Wi-Fi, SmartThings energy tracking, five convertible steps, auto clean, a coated copper condenser and five years' comprehensive warranty.
The catch is capacity. Samsung sells it as a 1.35 ton AC and rates it at 4,750 W, roughly 10% below a true 1.5 ton's 5,275 W. In a 150-170 sq ft middle-floor room that is fine; in a 180 sq ft top-floor or west-facing room it will run flat out on May afternoons and give back much of its efficiency advantage.
| Type | Split AC, inverter compressor |
|---|---|
| Model code | AR50H18D1ZH |
| Capacity | 1.35 ton — 4,750 W rated cooling |
| Energy rating | 5 star (2026 BEE label) |
| ISEER | 5.77 |
| Refrigerant | R32 |
| Condenser | Copper |
| Coil protection | DuraFin Ultra |
| Rated ambient | Spec sheet cooling range up to 52°C |
| Convertible modes | 5-in-1 |
| Wi-Fi | Built in — SmartThings app and Bixby |
| Filters | copper anti-bacterial filter |
| Self clean | Auto Clean |
| Indoor unit (H×W×D) | 299 × 1050 × 215 mm |
| Warranty | 5 years comprehensive (1 year standard + 4 years extended) and 10 years on the compressor, as listed by Samsung |
| Price source | Samsung India 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.
LG's closest rival and the brand that owns the Indian convertible-freezer conversation. Twin Cooling Plus runs the fridge and freezer on separate evaporators, which is the single most useful thing you can do about the smell of leftover sabzi migrating into the ice — and it is a genuine engineering difference, not a marketing label. Samsung's Digital Inverter carries the same ten-year warranty as LG's, and its 5-in-1 and 5-in-1 Convertible modes are the most flexible in the market.

Blue Star
A main bedroom or living room run for long nights through summer
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Blue Star
Families who want to cap how much electricity the AC can use in a month
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Blue Star
Halls and living rooms of 200-230 sq ft run for long hours
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Panasonic
Smart-home households in polluted cities
View detailsFree consultation · Pan-India
Tell us your city, your water source and your budget. For homes we will recommend the right technology — including telling you when a ₹3,000 purifier is genuinely enough. For offices, societies and factories, our team will size a system against your water report and send a specification-backed quotation.
Or email betterworkindia@gmail.com — attach a water analysis report and we can quote faster.
Homes
Right-sized recommendation for your TDS, not the most expensive unit
Offices & societies
25 LPH to 2,000+ LPH, sized on headcount and feed water
Industry
Pharma, food, textile, boiler feed — engineered to your specification
Service & AMC
Installation, repair and AMC with written response times