An inflatable bed comprising: a mattress assembly having at least one air chamber; and an electric air pump unit in connection with said mattress assembly and including: a first pump device in fluid communication with said air chamber in said mattress assembly for inflating said air chamber, a first control valve operable to allow for and interrupt fluid communication between ambient air and said air chamber, said first control valve being disposed between ambient air and said air chamber, a second pump device in fluid communication with said air chamber fluidly separate from said first control valve for inflating said air chamber, a pressure sensor in fluid communication with said air chamber, and a controller; said controller being configured to control said first control valve to allow for flow of fluid from ambient air into said air chamber therethrough so that said first pump device performs initial inflation of said air chamber to a first pressure value; said pressure sensor configured to detect when the first pressure value has been reached; and said controller being configured such that when said pressure sensor detects the first pressure value has been reached, said controller controls said first control valve to interrupt flow of fluid from ambient air into said air chamber and deactivates said first pump device, wherein said second pump device is operable to perform subsequent inflation of said air chamber to a second pressure value. a mattress assembly having at least one air chamber; and an electric air pump unit in connection with said mattress assembly and including: a first pump device in fluid communication with said air chamber in said mattress assembly for inflating said air chamber, a first control valve operable to allow for and interrupt fluid communication between ambient air and said air chamber, said first control valve being disposed between ambient air and said air chamber, a second pump device in fluid communication with said air chamber fluidly separate from said first control valve for inflating said air chamber, a pressure sensor in fluid communication with said air chamber, and a controller; a first pump device in fluid communication with said air chamber in said mattress assembly for inflating said air chamber, a first control valve operable to allow for and interrupt fluid communication between ambient air and said air chamber, said first control valve being disposed between ambient air and said air chamber, a second pump device in fluid communication with said air chamber fluidly separate from said first control valve for inflating said air chamber, a pressure sensor in fluid communication with said air chamber, and a controller; said controller being configured to control said first control valve to allow for flow of fluid from ambient air into said air chamber therethrough so that said first pump device performs initial inflation of said air chamber to a first pressure value; said pressure sensor configured to detect when the first pressure value has been reached; and said controller being configured such that when said pressure sensor detects the first pressure value has been reached, said controller controls said first control valve to interrupt flow of fluid from ambient air into said air chamber and deactivates said first pump device, wherein said second pump device is operable to perform subsequent inflation of said air chamber to a second pressure value.