Hi.
Our battery banks are beneath the starboard saloon seating, so we installed a 2.5 kw inverter in the void behind the seat back. In a similar void behind the seat back in the next seat along we have a 'Merlin' multi output smart charger...
Both these units have their own internal cooling fans, so we've ensured that air can flow freely behind the seats..
This arrangement also ensures that all the heavy cable runs are as short as possible...Bill