This is what we recommend based on your details:
2.4 - 2.6 m
3x3
Based on a ceiling height between 2.4 - 2.5 m, and an area size of 3 x 3, we recommend a 9,000BTU unit.
Some options:
Available in 9,000 & 10,000 BTU
Carrier XPower Gold
2.4 - 2.6 m
3x3
Based on a ceiling height between 2.4 - 2.5 m, and an area size of 3 x 3, we recommend a 9,000BTU unit.