Installing a heat pump in a Victorian terraced house

[tomkiss]

Sorry @Tarx, I ended up replying to the wrong thread, my reply is over here:

Can an air source heat pump work in an urban property?

AFAIK it depends on the unit. The Mitsubishi Ecodan, specifically, is classed as “ultra-quiet”, which avoids some of the planning requirements. They state: Low Sound = Heat Pump Placement Flexibility One of the regulations under Permitted Development, is that the sound pressure level of an air source heat pump must not exceed 42dB(A) 1m from the neighbour’s nearest room (Assessment Position). With class-leading sound power levels of just 58dB(A), the Ultra Quiet Ecodan air source heat pump …