Yes you can… you will be given options such as the loft, garage, utility room or standard airing cupboard.
Shall we locate the water cylinder to the loft? This can be discussed on the survey and conform on the Pre Installation Walkthrough Survey to confirm what is needed re loft hatch as water cylinders come in all shapes and sizes also they can be bespoke made where needed. Again this is finer detail. Green Tech Surveys will provide all the advice and guidance needs for the best options suited.