HVAC and plumbing design engineers have a tough job. They’re tasked with creating comfortable building spaces while optimizing energy usage and maximizing space. Naturally, they need to do ALL of this while minimizing the budget and ensuring that the HVAC system will last until all the people who remember the project have retired. (Granted, the latter half of that statement was a joke…sort of.) While we always recommend working with our sales engineers for the best system selection for your application, we understand that engineers may want to do some quick calculations prior to enlisting a manufacturer’s rep.