Bedroom air conditioning is the fastest-growing segment of residential AC in London. A correctly installed system makes sleeping through a London summer straightforward — without the noise or inefficiency of a portable unit. For the full range of domestic installation options, or to understand costs, see our AC cost guide.

What to Look for in a Bedroom AC Unit

Noise Level

Look for units rated below 22dB(A) in sleep mode. Daikin Perfera and Mitsubishi Electric MSZ-LN both operate at around 19-21dB(A) at minimum speed — genuinely quiet in a sleeping room.

Correct Sizing

A typical London bedroom of 15-20m² needs a 2.5kW system. Correct sizing at survey stage is critical — an undersized unit runs continuously and never achieves the set temperature.

Whole-House Residential Installations

For whole-house cooling, a multi-split system serves multiple rooms from one outdoor unit. See our domestic installation page. For flats, see our London flats AC guide. For period properties, see our Victorian properties guide.

Rooms to cool	System	Approx. installed cost
1 room	Single wall-mounted split	£1,200-£2,200
2 rooms	Multi-split	£2,800-£4,500
3-4 rooms	Multi-split	£4,500-£7,500

Frequently Asked Questions

What brands do you recommend for bedrooms?
Daikin Perfera and Emura for quiet operation. Mitsubishi Electric MSZ-LN for ultra-low noise. Both carry strong warranties when installed by an F-Gas certified engineer.

Can I install AC in a rented home?
Only with landlord consent. For tenants, see our London flats guide.

Book a Survey

Free surveys for bedroom and whole-house residential installations: 020 7870 2333. We cover Central, North, West, and South West London.

Simply Air Conditioning London — F-Gas certified residential installation since 2009.