Airelec convector heaters create natural convection within the room. Cool air in the room is conveyed from below into the Tactic where it is heated by specially shaped aluminium wing radiators and then evenly discharged through the slatted air-outlet grille. Direct heat ? and you can take that literally! Heat is emitted silently and with three times the heat distribution area on the special aluminium wing radiators, it is emitted three to four times faster than by conventional radiators.