An example includes an apparatus for circulating a gas, the apparatus including a lamp (101) including a filament (106), the lamp (101) being substantially linear and elongate. A translucent housing (108) can be disposed around the lamp (101) and define a space (110) between the lamp (101) and the translucent housing (108). A manifold (112) can be coupled to the translucent housing (108) and define a manifold interior (114) configured to be coupled to a pressure source, the manifold interior (114) being in fluid communication with the space (110) between the lamp (101) and the translucent housing (108). Furthermore, a seal (116) can be disposed between the translucent housing (108) and the manifold (112) that is configured to resist flow of the gas at a selected pressure. The lamp (101) can be slideably removable through an assembly including the translucent housing (108) sealed to the manifold (112).