A flow sensor assembly, comprising: a housing defining at least part of an inlet flow port and at least part of an outlet flow port, the housing having a first side and an opposing second side, with the first side having a recess formed therein that defines: a first side wall of a fluid channel, where the fluid channel extends between the inlet flow port and the outlet flow port; a first side wall of a bypass channel, where the bypass channel includes an upstream tap in fluid communication with the fluid channel at a first location, and a downstream tap in fluid communication with the fluid channel at a second location; wherein at least one of the upstream tap and the downstream tap is positioned perpendicular to the fluid channel, and the bypass channel has a generally s-shaped curve adjacent to the upstream tap or the downstream tap, and wherein the housing includes a molded part defining three or more sides of the fluid channel and three or more sides of the bypass channel; a cover sealingly engaged to the housing such that the cover, in conjunction with the housing, collectively define the fluid channel and the bypass channel, wherein the cover is positioned on the molded part of the housing to define a fourth side of the fluid channel and a fourth side of the bypass channel; and a flow sensor secured relative to the cover such that the flow sensor is in fluid communication with the bypass channel and is capable of measuring a flow rate of fluid flowing through the bypass channel, wherein the recess formed in the first side of the housing further defines one or more partitions having a length extending in a direction parallel to fluid flow in the fluid channel, wherein the one or more partitions engage the cover and are configured to laminarize fluid flow. a first side wall of a fluid channel, where the fluid channel extends between the inlet flow port and the outlet flow port; a first side wall of a bypass channel, where the bypass channel includes an upstream tap in fluid communication with the fluid channel at a first location, and a downstream tap in fluid communication with the fluid channel at a second location; wherein at least one of the upstream tap and the downstream tap is positioned perpendicular to the fluid channel, and the bypass channel has a generally s-shaped curve adjacent to the upstream tap or the downstream tap, and wherein the housing includes a molded part defining three or more sides of the fluid channel and three or more sides of the bypass channel; a cover sealingly engaged to the housing such that the cover, in conjunction with the housing, collectively define the fluid channel and the bypass channel, wherein the cover is positioned on the molded part of the housing to define a fourth side of the fluid channel and a fourth side of the bypass channel; and a flow sensor secured relative to the cover such that the flow sensor is in fluid communication with the bypass channel and is capable of measuring a flow rate of fluid flowing through the bypass channel, wherein the recess formed in the first side of the housing further defines one or more partitions having a length extending in a direction parallel to fluid flow in the fluid channel, wherein the one or more partitions engage the cover and are configured to laminarize fluid flow.