About The Product Airex Space Heater For Panel HT Panel Electrical Panel Switch Gear Panel Boards/Electronic Instruments Panel Space Heater AIrex anti-condensation space heater. It is ideal for prevention of condensation, corrosion, leakage currents in LT and HT switch gear panel boards/electronic instruments and panels, etc. The specially developed design incorporates a stainless steel. Installation can be done in vertical or horizontal position although horizontal mounting is preferred