A multifunctional air pump comprising: an air pump assembly (A") in fluid communication with an inflatable product and a surrounding atmosphere, the air pump assembly including: a motor (21"); an air pump (2") coupled to the motor; and a supplemental air pump (3") coupled to the motor; wherein the air pump assembly is operable in: an inflation mode in which the air pump assembly inflates the inflatable product by operating the motor to drive the air pump to direct air from the surrounding atmosphere to the inflatable product; a deflation mode in which the air pump assembly deflates the inflatable product by operating the motor to drive the air pump to direct air from the inflatable product to the surrounding atmosphere; and a maintenance mode in which the air pump assembly maintains inflation of the inflatable product by operating the motor to drive the supplemental air pump to direct air from the surrounding atmosphere to the inflatable product; wherein the multifunctional air pump further comprises a control module in electrical communication with the air pump assembly, the control module being configured to receive a user command and to operate the air pump assembly in one of the inflation, deflation, and maintenance modes based on the user command, wherein: in the inflation mode, the motor operates at a first speed; and in the maintenance mode, the motor operates at a second speed lower than the first speed, wherein: in the inflation mode, the motor operates in a first direction of rotation; and in the maintenance mode, the motor operates in a second direction of rotation, and wherein the supplemental air pump is a diaphragm pump having a plurality of reciprocating diaphragms (32") actuated by a common connecting rod (33") including a plurality of arms, wherein each arm actuates one diaphragm. an air pump assembly (A") in fluid communication with an inflatable product and a surrounding atmosphere, the air pump assembly including: a motor (21"); an air pump (2") coupled to the motor; and a supplemental air pump (3") coupled to the motor; a motor (21"); an air pump (2") coupled to the motor; and a supplemental air pump (3") coupled to the motor; wherein the air pump assembly is operable in: an inflation mode in which the air pump assembly inflates the inflatable product by operating the motor to drive the air pump to direct air from the surrounding atmosphere to the inflatable product; a deflation mode in which the air pump assembly deflates the inflatable product by operating the motor to drive the air pump to direct air from the inflatable product to the surrounding atmosphere; and a maintenance mode in which the air pump assembly maintains inflation of the inflatable product by operating the motor to drive the supplemental air pump to direct air from the surrounding atmosphere to the inflatable product; an inflation mode in which the air pump assembly inflates the inflatable product by operating the motor to drive the air pump to direct air from the surrounding atmosphere to the inflatable product; a deflation mode in which the air pump assembly deflates the inflatable product by operating the motor to drive the air pump to direct air from the inflatable product to the surrounding atmosphere; and a maintenance mode in which the air pump assembly maintains inflation of the inflatable product by operating the motor to drive the supplemental air pump to direct air from the surrounding atmosphere to the inflatable product; wherein the multifunctional air pump further comprises a control module in electrical communication with the air pump assembly, the control module being configured to receive a user command and to operate the air pump assembly in one of the inflation, deflation, and maintenance modes based on the user command, wherein: in the inflation mode, the motor operates at a first speed; and in the maintenance mode, the motor operates at a second speed lower than the first speed, in the inflation mode, the motor operates at a first speed; and in the maintenance mode, the motor operates at a second speed lower than the first speed, wherein: in the inflation mode, the motor operates in a first direction of rotation; and in the maintenance mode, the motor operates in a second direction of rotation, and wherein the supplemental air pump is a diaphragm pump having a plurality of reciprocating diaphragms (32") actuated by a common connecting rod (33") including a plurality of arms, wherein each arm actuates one diaphragm. in the inflation mode, the motor operates in a first direction of rotation; and in the maintenance mode, the motor operates in a second direction of rotation, and wherein the supplemental air pump is a diaphragm pump having a plurality of reciprocating diaphragms (32") actuated by a common connecting rod (33") including a plurality of arms, wherein each arm actuates one diaphragm.