Why does the 2014 ford taurus have no heat on the passenger side?

When Your Ford Taurus has no heat on the passenger side the first thing You should check is the climate control. If You have dual zone climate control then You will need to make sure to turn that to heat so that warm air comes out of the vents there. If Your passenger side zone is set to heat and You still have no warm air then the next most likely problem is a blend door issue. The blend door mixes the hot and cool air to give You the ratio of heat that You want, and it also sends it to the vents You select. If this is damaged then it will not send heat to the right areas.