Inventor Chilly 9000 BTU Portable Air Conditioner Review
Our top pick for most UK homes — quiet, efficient and genuinely effective during heatwaves.
Affiliate Disclosure: We may earn a commission when you buy through links on this website. This does not affect the price you pay. We aim to recommend products based on suitability, specifications, pricing and buyer needs.
Inventor
Inventor Chilly 9000 BTU Portable Air Conditioner
Rating
4.6/5 (1,842 reviews)
BTU
9,000 BTU
Room size
Up to 20m²
Noise
Quiet (48 dB)
Energy
Class A
Delivery
Next day
at Amazon UK
Check latest price at Amazon UKAffiliate link — price correct at time of writing
Pros
- Whisper-quiet at 48 dB — ideal for bedrooms
- Compact footprint fits most UK flats
- Energy class A — low running costs
- Easy-to-use 24-hour timer
- Full window exhaust kit included
Cons
- Single-hose design is less efficient than dual-hose
- Remote control feels plasticky
Who should buy this
Bedrooms, small living rooms and UK flats up to 20m²
- Whisper-quiet at 48 dB — ideal for bedrooms
- Compact footprint fits most UK flats
- Energy class A — low running costs
Who should avoid this
- Single-hose design is less efficient than dual-hose
- Remote control feels plasticky
Full Review
The Inventor Chilly is our top pick for most UK homes. At 48 dB, it runs quietly enough for bedroom use, and the A energy rating keeps electricity bills reasonable even during a prolonged heatwave. The window kit fits standard UK casement and sash windows without modification. True 9000 BTU output — not inflated — means it reliably cools rooms up to 20m². The 24-hour timer and sleep mode make overnight use practical. Build quality is solid for the price, though the remote control feels budget. Overall, the best balance of price, performance and noise for UK buyers.
Key Specifications
| BTU Output | 9,000 BTU |
| Cooling Capacity | 2.6 kW |
| Energy Class | A |
| Noise Level | 48 dB |
| Wattage | 900W |
| Room Size | Up to 20m² |
| Hose Type | Single hose |
| Dimensions | 35 × 35 × 75 cm |
| Weight | 26 kg |
| Timer | 24-hour |
| Modes | Cool, Fan, Dehumidify, Sleep |
Running Cost Estimate
Based on 900W wattage, 8 hours/day at the UK average electricity price of £0.24/kWh.
£0.216
Per hour
£1.73
Per day (8 hrs)
£51.90
Per month (30 days)
Electricity prices vary. Use our Running Cost Calculator to enter your actual tariff.
Alternatives to Consider
De'Longhi
De'Longhi Pinguino PAC EX100 Silent
Best for: Home offices, master bedrooms and open-plan living areas
Woods
Woods Milano 7000 BTU Portable Air Conditioner
Best for: Small bedrooms, box rooms and home office nooks
Whynter
Whynter ARC-14S Dual Hose 14000 BTU
Best for: Large living rooms, open-plan kitchens and heatwave conditions
Not sure which cooling product is right for you?
Use our free tools to find the right BTU for your room, calculate running costs and compare product types.
Related guides: BTU Calculator · Best Portable AC UK · Running Cost Calculator · AC vs Air Cooler