The short answer I’m finding is NO!
I booked an engineer for a heat loss survey in preparation for the install of a heat pump and have been shocked by the first point mentioned by the surveyor/installer. From what I have been told you have to have a one metre boundary between the heat pump unit and any door/window/drainage. As far as I am aware this is because of potential leaking of noxious gasses from pump and the gasses used having a lower density (hence could block drainage) than air.
You are also not allowed to install a heat pump within one metre of the boundary of your property without planning permission.
These two issues combined mean that I would need to have a heat pump in the middle of my (limited because town/terraced house) garden which is both unsightly and would require a lot of work digging up of existing work.
In short I cannot see how this then becomes financially viable for people in my situation (a lot of people live in terraced housing)? Am I missing something?!
see image below of rear of my property…no one metre (radius) gaps anywhere!