Start with the local property, not a generic BTU chart
Mossel Bay has both permanent neighbourhoods and holiday properties that can stand closed for periods. Coastal air raises the importance of outdoor-coil care, while a holiday home benefits from a simple, efficient system that returning owners or guests can operate without guesswork.
Apartments, hillside homes and freestanding coastal properties create different constraints around body-corporate approval, pipe-run length, wind exposure and where condensate can discharge safely.