Reference Manual

What is Infrared Heat?
A heated quartz element emits a safe, clean wavelength of light that is
only absorbed by solid objects, transferring heat directly to a person,
table or floor rather than heating the air.
For this reason, infrared heat can be distributed very evenly, and will
not simply "blow away" in windy or drafty conditions. Infratech medium
wave quartz element heaters emit a barely discernible, pleasing glow
that will not affect the ambience of your gathering – unlike competitive
short-wave or halogen electric heaters that produce a very harsh glare or
bright-colored light.
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Overview