The Carrier HUMXXSTM3034 humidifier is a steam style humidifier. It was manufactured by Aprilaire and private labeled for Carrier. ALL of the parts are the same but Carrier charges more for them. Since we are also a prime Aprilaire parts distributor we decided to ship the Aprilaire labeled parts to save our clients’ money. All of the Aprilaire brand parts for this Carrier humidifier are located on the link below and are in stock. Normal maintenance requires that the steam cylinder be replaced annually.

Carrier HUMXXSTM3034 Parts page under the original brand name Aprilaire