The invention discloses a split air-conditioner indoor unit, which comprises an upper shell arranged on the body. A
heat exchanger, a cross flow wind wheel and an air duct for accommodating the
heat exchanger and the cross flow wind wheel are arranged in the upper shell; the upper shell is provided with an air inlet and an air outlet which are communicated with the air duct, the air duct comprises a left air duct and a right air duct, the front of the upper shell is provided with a
front panel, and a middle partition plate is arranged in the upper shell; the left air duct is encircled by the upper shell, the
front panel, the middle partition plate and a left
volute of a left cross flow wind wheel together; a left
heat exchanger, the left cross flow wind wheel and a left
volute tongue of the left cross flow wind wheel are arranged in the left air duct; the right air duct is encircled by the upper shell, the
front panel, the middle partition plate and a right
volute of a right cross flow wind wheel together; and a right heat exchanger, the right cross flow wind wheel and a right volute tongue of the right cross flow wind wheel are arranged in the right air duct. The split air-conditioner indoor unit has the characteristics of simple and reasonable structure, small integral volume,
high energy efficiency ratio, flexible installation mode and wide application range.