Abstract: An air-conditioning condensate drain cleaning apparatus is provided. The apparatus includes a housing configured to suspend a condensate drain line cleaning fluid container therein, and a fluid dispensing unit configured to connect the cleaning fluid container to an air-conditioning condensate drain pipe and selectively control the rate at which the cleaning fluid is transferred from the cleaning fluid container to the condensate drain pipe. The fluid dispensing unit includes an elongated tube for transferring a fluid, a drip chamber for viewing the fluid, and a flow regulation clamp configured to control the rate at which the fluid is transferred from the cleaning fluid container to the condensate drain pipe. The housing includes a support member for suspending the cleaning fluid container therein, an elongated slot for viewing the cleaning fluid container, and a pair of apertures and protrusions for removably mounting the front portion to the rear portion.