Warm air heaters, with high combustion efficiency, for direct air throw or air ducting, working either with light oil or gas burner. Very thick combustion chamber and high efficiency patented trapezoidal elements heat exchanger. Low sound pressure level centrifugal fans and electronic control and safety system. Cabinet heater robustly constructed, with painted steel panels, fitted with a radiant sheet insulation. Tecnoclimas 5 models have been designed for residential environments heating: detached houses or cottages and in various situations where complete air treatment is needed (such as heating, filtering etc.).