I have 3 air conditioners fixed to my walls in each room of my flat. Each has 2 hole for sucking air in and blowing it out. The upstairs Neighbour says the outward air is stale and she want us to stop using it.
Does anyone know if this is correct or where i can find a document saying it is not.
It used the same extration system as (Google "throughwallairconditioning.co.uk/")
Does anyone know?
