Fuel Cell and Hydrogen Infrastructure Act of 2014 - Amends the Internal Revenue Code, with respect to the tax credit for alternative fuel vehicle refueling property expenditures, to: (1) increase the rate of such credit from 30% to 50% for hydrogen-related alternative fuel vehicles, (2) eliminate the dollar limitation on such credit for hydrogen-related vehicles, (3) allow such credit for off-highway motor vehicles designed for carrying or towing loads, and (4) extend such credit through 2016 for property related to hydrogen.

Increases the 30% energy tax credit for investment in fuel cell property to: (1) 40% for fuel cell property used in a combined heat and power system having an energy efficiency percentage of at least 60% but less than 70%, and (2) 50% for fuel cell property having an energy efficiency percentage of 70% or more. Increases the maximum dollar amount of the energy tax credit for investment in qualified fuel cell property.