u/MaximumIncomeFridge

I just had a consulation call with planning. They said that the heat pump must be installed by an MCS certified installer (at least that is what I heard) in order to be considered a permitted development. They sent me a link in the follow up email for reference:

https://www.planninggeek.co.uk/gpdo/renewable-energy/class-g/

In this, it would seem that only the device itself needs to be MCS certified. No mention of the installer.

Does anyone know for sure?

I ask because my local non MCS certified installer is much cheaper than the certified one (even with the grants!)

TL;DR does the heat pump or the installer need to MCS certified (or both) in order to be treated as a permitted development?