Hosted on Fotki

(Do not use a coil FL tube inside an enclosure!! This is an older photo taken out of context for illustration)

Hosted on Fotki

Both flourscent lights and LED give off heat, convection heat at that, they directly heat the air. I have RHPs yes they heat objects that in turn heat the air but the mass of the object matters a great deal in my case I have light weight objects and can at best get 2-3º over rooms the light system. I easily get 10º often I have to reduce the on time to drop the ambient temps as they can become too warm. Any one whom has ever tried to change a flourscent light that has been on will tell you they get quite warm. Not halogen or tungsten hot but warm to be certain.

CHE are not radiant heat but convection. Convection heat heats air (and effects humidity as well) Radiant heat has little to no effect on air temps directly this is the same as flexwatt it too is radiant heat.