Hi all,

I'm considering having a ducted AC unit installed for my hall/landing (plus a toilet which is accessed from the hall - supply only!), and would appreciate some advice on duct sizing.

The 2 Fujitsu units I'm considering are either ARYG18LLTB (940 m3/hour on high) or Fujitsu ARYG24LMLA (1100 m3/hour on high).

I'm planning to run 2 supply ducts (one will be direct to a grill - one will split at a T junction to 2 grills) and 2 return ducts on the landing, only 2-3 meters from the unit.

The supply runs are approx:

Duct 1: 8 meters / 3 90 degree bends
Duct 2: 9 meters / 4 90 degree bends

Any help on duct sizing (and suggestions on the best type of duct) would be most appreciated!

Thanks