🏆 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 3 Star Hot & Cold Inverter Split AC ID318DNUHC
Hot & cold with a PM 2.5 and activated carbon filter
7.7/10
Our editorial score
Good — right for the specific buyer
Homes in polluted north Indian cities that need winter heating
- Capacity
- 1.5 ton
- Energy rating
- 3 star · ISEER 3.9
- Type
- Split, inverter
- Compressor warranty
- 10 years
About this air conditioner
- 10-year compressor warranty and 5-year PCB warranty
- 5-in-1 convertible — runs as a smaller AC on mild nights and draws less power
- Heats as well as cools, replacing a room heater in north Indian winters
- PM2.5 filter with activated carbon for fine dust
How it scores
Cooling performance7.8
Build & coil quality8.6
Value for money7.4
Electricity cost6.7
Installation & service8.8
Our verdict
This is the only hot & cold AC on our list with a PM 2.5 filter backed by activated carbon, which makes it a sensible pick for Delhi-NCR, where December brings both the cold and the worst air. It heats with an auto-defrost cycle down to -2°C outside, cools to 52°C, has five convertible steps and 10 and 5 years of compressor and PCB warranty, for ₹42,990.
An ISEER of 3.9 is the lowest among the inverter splits here, so it is costly to run through a long cooling season, and 48 dB(A) at its lowest listed fan speed is loud for a bedroom. Buy it for the heating and the filter, not for summer efficiency.
What we like
- 10-year compressor warranty and 5-year PCB warranty
- 5-in-1 convertible — runs as a smaller AC on mild nights and draws less power
- Heats as well as cools, replacing a room heater in north Indian winters
- PM2.5 filter with activated carbon for fine dust
What we don't
- 48 dB(A) even at its lowest listed fan speed — loud for a bedroom
- ISEER 3.9 is low for an inverter split — expect noticeably higher bills than a 5-star unit
- 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 | ID318DNUHC |
| Capacity | 1.5 ton — 5,050 W rated cooling |
| Energy rating | 3 star (2025 BEE label) |
| ISEER | 3.9 |
| Refrigerant | R32 |
| Condenser | Copper |
| Coil protection | Nano BluProtect |
| Rated ambient | Works from -2°C to 52°C outdoors |
| Convertible modes | 5-in-1 |
| Wi-Fi | Not listed |
| Heating | Hot & cold with auto-defrost, rated from -2°C to 52°C outdoors |
| Filters | PM2.5 filter with activated carbon, high-density dust filter |
| Indoor noise | 48 dB(A) at the lowest fan speed |
| Indoor unit (H×W×D) | 317 × 964 × 214 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 3 Star Hot & Cold Inverter Split AC ID318DNUHC — frequently asked questions
What room size is the Blue Star ID318DNUHC suitable for?
Rated at 5,050 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 ID318DNUHC?
Blue Star publishes an ISEER of 3.9 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 ID318DNUHC 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.
Can the Blue Star ID318DNUHC heat a room in winter?
Yes — it is a hot & cold AC that runs as a heat pump in winter (hot & cold with auto-defrost, rated from -2°c to 52°c outdoors). A heat pump moves heat indoors rather than generating it, so it typically uses far less electricity than a 2 kW fan or oil heater for the same warmth. Heating output falls as the outdoor temperature drops, so it is best suited to plains winters rather than hill-station cold.
Where can I buy the Blue Star ID318DNUHC at the best price?
We list ₹42,990 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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