Ariston MOBIS 8 UK
A practical portable air conditioner (8000 BTU) for proper, portable cooling around the home.
The Best Portable Air Conditioners Under £300 (UK 2026)
Under £300 you can get a genuinely effective portable air conditioner - usually a value-brand 3-in-1 unit with enough BTU for a bedroom or average room. You don't need to spend a fortune to cool down in a heatwave.
What to look for
- Enough BTU for your room (don't undersize to save money).
- A 3-in-1 function for year-round use.
- An included window kit.
- A remote and timer for convenience.
Our top picks
#1
Frequently asked questions
Are cheap portable air conditioners any good?
Many value-brand units cool well for the money, especially for bedrooms and average rooms. You mainly pay more for quieter running, inverter efficiency, build quality and brand support - but the basic cooling is effective.
Bottom line
Our top pick is the Ariston MOBIS 8 UK (our score 8.2/10) - A practical portable air conditioner (8000 BTU) for proper, portable cooling around the home..