Designed specifically for ready-mix production, the 3 million and 6 million BTU/hr. Hybrid Water Heaters can achieve 208° F outlet temperature at 99%+ efficiency. The heater's media section is efficient, while its coil section allows it to reach high temperatures without discharging steam from the exhaust stack. Its recirculation mode maintains storage tank water at an adjustable temperature setting. Sioux Corp. 888-763-8833.