Microbreweries are still opening at an accelerated pace, and many are using steam in the brewing process. Designing a steam system can be frustrating because the logic of low-pressure steam is opposite that of other HVAC systems. Want more heat in a hydronic boiler? Turn up the temperature control. Want more air from a blower? Increase the speed. If that logic is used on a steam system, the results will often have the opposite effect.