Inverter air conditioner from 18000 btu commercial line, single outdoor unit with internal splits of the same combination. Energy Class A ++ / A + Cooling Power 5.5 kW (1.80 - 7.00) Heating Power 6.3 kW (1.50 - 7.50) Cooling Range -15 ÷ 48 ° C Heating Range -15 ÷ 24 ° C Piping (Liquid-Gas) 1/4 ”- 3/8” Refrigerant charge 1350 g Dimensions (LxHxP) 860x667x368 Weight 47 Sound pressure 43 dB (A) Single outdoor unit with internal splits of different combination. Thanks to a single control technology it is possible to install multiple indoor units to a single universal outdoor unit. Depending on the unit, it is possible to combine up to five air conditioners thanks to the FXE 4221CE model, generally called penta split. As regards the FXE-W series, it is possible to mount the same unit only in the quad and penta model.