Abstract: A multi-purpose air duct tool assembly that includes main housing shaped and sized to be handheld, having a bottom wall, having a sidewall coupled to the bottom wall and enclosing and defining a housing cavity within the main housing, defining a blade opening thereon, defining a button opening thereon, and defining an upper housing opening, wherein the assembly also includes a blade member disposed within the housing cavity and operably coupled to a button disposed in the button opening and operably configured to translate the blade member through the blade opening and a squeegee retention cartridge selectively removably coupled to the main housing, disposed within the housing cavity, and retaining a squeegee member of a slender configuration with a thickness less than a transverse length of the squeegee member and projecting in an outwardly orientation away from the housing cavity and the upper housing opening.

Abstract: An air conditioning drain device essentially comprising a tubular pipe assembly, a flapper assembly, and a service port assembly. The device automatically engages a flapper valve that prevents the reverse flow of condensate water from entering a dwelling unit that shares a common drain line with multiple units, while at the same time allowing for quick and easy flushing of blockages in the drain line without causing water damage to the interior of the dwelling unit.

Abstract: An air conditioning drain device essentially comprising a tubular pipe assembly, a flapper assembly, and a service port assembly. The device automatically engages a flapper valve that prevents the reverse flow of condensate water from entering a dwelling unit that shares a common drain line with multiple units, while at the same time allowing for quick and easy flushing of blockages in the drain line without causing water damage to the interior of the dwelling unit.