Only 3 leftChallenge 5K Portable
The Argos classic for small bedrooms.
- 5,000 BTU — ideal for small rooms
- 3-in-1 with dehumidify mode
- Remote control included
- Simple LED controls
Cards, Apple Pay, Google Pay & more — processed securely by Stripe. Delivery address collected at checkout.
13.4% slower reaction times (and 13.3% slower working-memory responses) measured in homes without cooling during a real heatwave, versus air-conditioned homes. Cedeño Laurent et al., PLoS Medicine, 2018
What does a cool night actually cost?
Challenge 5K Portable draws just 650W — about the same as an old lightbulb.
Based on 650W at 24.5p/kWh (uk avg). Your tariff may vary — it'll still be pennies.
- Tank capacity
- 0 L
- Airflow
- 240 m³/h
- Noise
- 53 dB (max)
- Power
- 650 W
- Height
- 68 cm
- Weight
- 21 kg
- Room size
- up to 12 m²
- Speeds
- 3 + sleep
- Timer
- 12 h
- Controls
- Remote & touch panel
Quieter than your conversation.
Quiet enough for TV evenings; sleep mode drops it lower.
What it actually does, in numbers.
per hour to run
based on uk avg electricity rates
| Airflow | 240 m³/h |
| Noise | 53 dB |
| Power draw | 650 W |
| Height | 68 cm |
| Weight | 21 kg |
| Running cost | ~16p/hour |
| Covers rooms to | 12 m² |
Every spec on this page comes from the manufacturer's data sheet. We don't invent airflow figures or noise ratings — if a unit can't meet its claims, it doesn't go in the range.
