The boiler requires less than ten minutes to heat up to 100 PSI Steam from a cold start. This is a considerable time and fuel saver. The control system and entire boiler are furnished so that it is simple to operate and easy to repair. The atmospheric model does not require expensive blowers, complicated controls or burner adjustments, as necessary on many boilers. The staggered Tube design provides a heating surface with uniform heat distribution to permit maximum heat transfer resulting in lower stack temperatures and more economical operation. No Parker Boiler has ever been known to experience an internal explosion.