Profile: Hazloc Heaters is a manufacturer of industrial and explosion-proof unit heaters for hazardous and severe duty locations. We utilize heat transfer fluid flow software for the design and analysis of steam rig heaters, hydronic unit heaters, and explosion proof electric unit heaters. This software offers state-of-the-art heat exchanger simulation and design. Steam rig heater is designed for steam applications on drilling rigs where boiler neglect can lead to freeze-up conditions. During an accidental freeze-up the SafeDeformT core headers are designed to accommodate ice expansion. This series is designed for pressures up to 100 psi in single-pass configurations only. Our reversible core connection feature that allows to reverse the configuration of the inlet and outlet connection locations, by rotating the core, to suit the installation.