Panasonic 1 Ton 5-Star Wi-Fi Inverter Split AC
CS/CU-NU12BKY5WX
Best overall Panasonic 1-ton AC — highest ISEER, quietest, and smartest

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What We Liked
- Highest ISEER 4.85 of any 1-ton AC in India
- 20 dB — whisper-quiet, ideal for light sleepers
- Nanoe-G air purification + PM2.5 filter
- Wi-Fi + Amazon Alexa / Google Home compatible
- 7-in-1 Convertible mode for flexible cooling
- 10-year compressor + 5-year PCB warranty
Take a Note
- Premium pricing at ₹41,990
- Smaller service network (2,800 centres) vs Voltas
- Smart app can be buggy on older Android versions
- No convertible mode as flexible as LG's 6-in-1
Price
₹41,990
Monthly Bill
₹560/mo
ISEER
4.85
Noise
20dB
Verdict: The Panasonic CS/CU-NU12BKY5WX is the best Panasonic 1-ton AC in India — it delivers the highest ISEER rating of any brand at 4.85, runs at an incredible 20 dB, and includes Nanoe-G air purification. It's the premium choice for buyers who prioritize efficiency, silence, and clean air over service network density. It consumes approximately 70 units/month at 8 hours daily usage, translating to roughly ₹560/month at India's average electricity rate of ₹8/unit.
| Star Rating | 5-Star BEE 2026 |
| Type | Inverter Split |
| ISEER Rating | 4.85 |
| Cooling Capacity | 3,500 W |
| Noise Level | 20 dB |
| Refrigerant | R32 |
| Warranty | 10-year compressor + 5-year PCB |
| Best For | Best overall Panasonic 1-ton AC — highest ISEER, quietest, and smartest |