Humidification system

A humidification system comprising:

• a humidification chamber configured to hold a volume of liquid, the humidification chamber comprising:
• a side wall;
• a top wall connected to the side wall;
• and
• an inlet and an outlet extending through at least one of the top wall and the side wall, a first portion of a gas flow path defined within the humidification chamber between the inlet and the outlet;
• and
• a circuit assembly configured to provide a second portion of the gas flow path from at least the humidification chamber to a patient interface, the circuit assembly comprising one or more heater wires located therein to reduce condensation, the circuit assembly further comprising a patient supply conduit located proximal the patient interface, an inspiratory conduit located distal the patient interface, a wye piece positioned in use between the inspiratory conduit and the patient supply conduit, and a supply conduit configured to be coupled to a gases supply at a first end and to the humidification chamber at a second end;
• wherein at least one of the one or more heater wires extends along at least a portion of the inspiratory conduit,
• wherein at least one of the one or more heater wires extends along at least a portion of the patient supply conduit,
• wherein at least one of the one or more heater wires extends along at least a portion of the wye piece,
• wherein at least one of the one or more heater wires extends along at least a portion of the supply conduit, wherein each of the one or more heater wires extending along at least the portion of the supply conduit is configured to heat the supply conduit through which the heater wire extends.