The Fisher & Paykel Heated Breath Circuit, For Auto, Novo, and Premo Models Thermosmart Breathing Tube, 6 ft are designed exclusively for use with Fisher & Paykel's ICON Series The Fisher & Paykel Heated Breath Circuit, For Auto, Novo, and Premo Models Thermosmart Breathing Tube is designed exclusively for use with Fisher & Paykel's ICON Series . ThermoSmart tubing features an internal heated coil that eliminates rainout in the hose and delivers optimal temperature and levels to the user regardless of outside air temperature or conditions. Fisher & Paykel Healthcare has been providing well-designed and innovative medical products for five decades. Founded in 1971, Fisher & Paykel developed a then unique device that delivered respiratory to help patients experiencing sleep apnea. The company specializes in both respiratory and acute care in the treatment of obstructive sleep apnea