De'Longhi portable AC exhaust hose becomes very hot and room does not cool effectively.

1. Check hose length and routing: Ensure the exhaust hose is as short and straight as possible, within De'Longhi's specified maximum length.

• 2. Inspect window kit: Confirm the window adapter is sealed properly and the vent flap (if present) opens freely.
• 3. Prevent recirculation: Seal gaps around the window kit with foam or weatherstripping to prevent hot exhaust from re-entering the room.
• 4. Avoid tight coils: Do not coil the hose tightly; this increases back pressure and temperature.