The Trane direct fired outdoor heating units are designed for relieving negative pressure conditions inside industrial and commercial facilities. With their packaged, curb mounted design, these direct fired units offer a full support system that provides a plenum for return air and easily accessible piping and electrical connections.

The Trane direct fired indoor make-up air heaters are intended specifically for indoor installation in an industrial or commercial setting for outside air supply. Their modular design provides “mix and match” flexibility that can be used to customize these heaters for virtually any indoor application.