Trench heating with trench heaters (with the fan or without) Verano-konwektor is an ideal source of worm air in office premises, residential, luxury apartments, industrial halls in which compartments fitted with glass constitute the greater participation. We have a rich offer of heaters: trench heater, convector heater, trench heater with the fan, standing heater, wall mounted convector heater. trench warming halls, shops, hotels, offices, luxury apartments and flats.