DeltaT Thermal Solutions isn't selling any comfort heating heaters, although here some information about Infrared Comfort Heating.
The usual temperature to feel comfortable is around 70˚F. The human body in a 70˚F room has a 92˚F skin temperature (84˚clothing temperature); so you're not really "heating" the body with that 70˚F air.
The average person seated or resting will dissipate about 400 BTU's per hour (his metabolism)..or the equivalent of a light bulb. By exercising or doing other fun stuff the human body can dissipate up to ten times that. The body must lose heat to be comfortable but it must lose it at a proper, controlled level.
Radiant heaters quickly provide heat to those closest to the heater, rather than providing heat for an entire room. They're heating objects and not the air, so even in a large space partial heating is possible. (for example only the shipping and receiving area instead of the entire warehouse) Oil-filled radiators look like old-fashioned radiators that are found in many older homes. However, these are radiant electric heaters that are permanently filled with oil. Many of the models available come with wheels so they are easy to move around your home. This type of heater provides a steady heat source for an entire room.
Convection: In a 70˚F room, a person at rest will lose about 100 BTU per hour through convection.the hotter the room, the less he loses.
Before you can select the appropriate heater, you must know:
If you want to heat an indoor area (comfort heating) of 20 feet x 20 feet, you need 11'000 Watts if your ceiling height is 10ft. (And this 11'000 Watts you can't get from 110V!)