Unfortunately the main lounge area is a flat extension, with no access for exta insulation there. It also has a lot of windows - basically one full wall of full length single pane glass. Which is great for having a view, but terrible for heating / cooling. At least it is south facing and not getting any direct sun during summer.

There are timer options built in to the system just using the remote, so I can do that without an extra app - I've already got it set to come on in the morning before I get up for work tomorrow. 😀