Questions worth asking.

Do I need planning permission?
For most through-wall monobloc installs on a normal freehold house, no. Listed buildings and conservation areas need consent - we'll flag it in the quote and can help with the paperwork.
Will the freeholder allow it?
Almost always - because there's no outdoor unit. We give you a Freeholder Pack to forward: a two-page technical summary and a template consent letter.
How loud is it really?
The Quiet Bedroom sits at 30 dB(A) on night mode - almost certainly quieter than the room you're in now. The living-room unit at low speed is around 34 dB(A) - below normal conversation.
Do I need an electrician?
The unit runs from a standard 13 A socket. If there isn't one within 2 m of the install spot, we add a dedicated switched socket for £200 - tested and certificated by a professional electrician. 
How long does it take?
One working day on site. Two neat 160 mm cores through the wall, unit mounted, sealed, tested, commissioned.
What refrigerant is used?
Our Quiet Bedroom uses R290 - a natural refrigerant with a tiny fraction of the global-warming impact of older gases. The larger units use factory-sealed circuits, so there's no F-gas engineer visit and no annual paperwork.
What's the warranty?
Three years on the unit, one year on the installation. We're local so if you have any problems we're a phone-call away. 
Do you install outside Surrey?
Yes although a call-out fee of £100 applies outside of our traditional coverage area.