According to aspects of the embodiments, an integrated light and heat arrangement of low profile light-emitting diode (LED) fixture to harness both the light and the heat generated by the LEDs is described. New system architectures and example form factors are provided for the development of new LED fixtures for integrative lighting and heating arrangement to increase their overall luminaire system efficiency. The integrative lighting and heating arrangement of the LED fixture in low profile design can minimize interference of harvesting the heat from LEDs with their light output. The heat which would otherwise be wasted from LEDs is harvested for the purpose of heating up some nearby body, such as a body of air, or a component, or a lens to accomplish some benefits, including, for example, reduction in overall energy uses for space heating, cooling, and lighting and associated cost, and melting snow and de-icing on outdoor LED fixtures for safety and security.