Dreo Smart 3-in-1 Portable Air Conditioner
A practical portable air conditioner (10000 BTU, 3-in-1) for proper, portable cooling around the home.
The Best Quiet Portable Air Conditioners (UK 2026)
Noise is the most common complaint about portable air conditioners, so if you'll use one in a bedroom or home office, a quieter model is worth seeking out. No portable AC is silent - the compressor and fan make noise - but the best run noticeably softer.
What to look for
- The lowest quoted dB figure you can find.
- A night/sleep mode that lowers fan speed and noise.
- Enough BTU so it isn't always running flat out.
- A steady hum rather than a rattly build.
Our top picks
#1
#2 
Portable Air Conditioner
A practical portable air conditioner (12000 BTU) for proper, portable cooling around the home.
#3 
MOBIS PLUS 10 UK
A practical portable air conditioner (10000 BTU) for proper, portable cooling around the home.
#4 
ZAFRO Inverter Portable Air Conditioner
A practical portable air conditioner (14000 BTU, 42 dB) for proper, portable cooling around the home.
#5 
Portable Air Conditioner
A practical portable air conditioner (14000 BTU) for proper, portable cooling around the home.
#6 
Dreo Smart 3-in-1 AC516S
A practical portable air conditioner (12000 BTU, 3-in-1) for proper, portable cooling around the home.
#7 
Portable Air Conditioner
A practical portable air conditioner (12000 BTU) for proper, portable cooling around the home.
#8 
Tanoxo BTU Portable Air Conditioner
A practical portable air conditioner (12000 BTU) for proper, portable cooling around the home.
Frequently asked questions
What is a quiet noise level for a portable air conditioner?
Anything around the low-50s dB or below is on the quieter side for a portable AC; many sit in the mid-50s to mid-60s. Remember the quoted figure is usually the lowest fan setting.
Bottom line
Our top pick is the Dreo Smart 3-in-1 Portable Air Conditioner (our score 9.5/10) - A practical portable air conditioner (10000 BTU, 3-in-1) for proper, portable cooling around the home..