This is what we recommend based on your details:
2.4 - 2.6 m
5 x 5
Based on a ceiling height between 2.4 - 2.6 m, and an area size of 5 x 5, we recommend a 18,000BTU unit.
Some options:
Available in 18,000 BTU
Carrier XPower Gold
2.4 - 2.6 m
5 x 5
Based on a ceiling height between 2.4 - 2.6 m, and an area size of 5 x 5, we recommend a 18,000BTU unit.