A bidirectional filter drier comprising: an outer shell (12, 14, 15) defining a first opening, a second opening; a desiccant core contained within the outer shell (12, 14, 15); a flow path formed by a space between the outer shell (12, 14, 15) and the core for fluid flowing in a first direction from the first opening to the second opening, and a second reverse direction from the second opening to the first opening; a first filter element at a first end of the core adjacent the first opening, and a second filter element at a second end of the core adjacent the second opening, wherein the first filter element and the second filter element selectively block the flow path such that: in a first operational state for fluid flowing in the first direction, an edge portion of the first filter element is deflected from the outer shell (12, 14, 15) to open a pathway between the first filter element and the outer shell (12, 14, 15) and allow fluid to flow through the flow path, and an edge portion of the second filter element is deflected against the outer shell (12, 14, 15) to form a compliant seal, thereby obstructing the flow path such that the fluid is forced through the second filter element; and in a second operational state for fluid flowing in the second reverse direction, the edge portion of the second filter element is deflected from the outer shell (12, 14, 15) to open a pathway between the second filter element and the outer shell (12, 14, 15) and allow fluid to flow through the flow path, and the edge portion of the first filter element is deflected against the outer shell (12, 14, 15) to form a compliant seal thereby blocking the flow path such that the fluid is forced through the first filter element. an outer shell (12, 14, 15) defining a first opening, a second opening; a desiccant core contained within the outer shell (12, 14, 15); a flow path formed by a space between the outer shell (12, 14, 15) and the core for fluid flowing in a first direction from the first opening to the second opening, and a second reverse direction from the second opening to the first opening; a first filter element at a first end of the core adjacent the first opening, and a second filter element at a second end of the core adjacent the second opening, wherein the first filter element and the second filter element selectively block the flow path such that: in a first operational state for fluid flowing in the first direction, an edge portion of the first filter element is deflected from the outer shell (12, 14, 15) to open a pathway between the first filter element and the outer shell (12, 14, 15) and allow fluid to flow through the flow path, and an edge portion of the second filter element is deflected against the outer shell (12, 14, 15) to form a compliant seal, thereby obstructing the flow path such that the fluid is forced through the second filter element; and in a second operational state for fluid flowing in the second reverse direction, the edge portion of the second filter element is deflected from the outer shell (12, 14, 15) to open a pathway between the second filter element and the outer shell (12, 14, 15) and allow fluid to flow through the flow path, and the edge portion of the first filter element is deflected against the outer shell (12, 14, 15) to form a compliant seal thereby blocking the flow path such that the fluid is forced through the first filter element. in a first operational state for fluid flowing in the first direction, an edge portion of the first filter element is deflected from the outer shell (12, 14, 15) to open a pathway between the first filter element and the outer shell (12, 14, 15) and allow fluid to flow through the flow path, and an edge portion of the second filter element is deflected against the outer shell (12, 14, 15) to form a compliant seal, thereby obstructing the flow path such that the fluid is forced through the second filter element; and in a second operational state for fluid flowing in the second reverse direction, the edge portion of the second filter element is deflected from the outer shell (12, 14, 15) to open a pathway between the second filter element and the outer shell (12, 14, 15) and allow fluid to flow through the flow path, and the edge portion of the first filter element is deflected against the outer shell (12, 14, 15) to form a compliant seal thereby blocking the flow path such that the fluid is forced through the first filter element.