Abstract: The disclosed technology includes an air distribution baffle for distributing a flow of air from an air moving device to a burner assembly within a fluid heating device. The air distribution baffle can include a substantially flat portion and a raised portion extending upwardly from the substantially flat portion. The raised portion can include one or more faces having one or more apertures. The apertures can be arranged in a predetermined pattern or arrangement designed to provide a more uniform distribution of air flow and thus increase the combustion efficiency of the fluid heating device.