One of the most common statements we hear this time of year is: “The system is running all day… it just can’t keep up.” At that point, the assumption is: Something must be wrong. Low refrigerant. A failing component. A maintenance issue that needs to be addressed. And sometimes, that’s true. But more often, the system isn’t broken at all. It’s doing exactly what it was designed to do. The problem is that the building it’s serving isn’t the same building it was designed fo

Commercial HVAC systems are designed around very specific assumptions about how a building will operate. During the engineering and construction phase, mechanical designers calculate cooling loads based on factors such as occupant density, lighting loads, equipment heat generation, operating hours, and ventilation requirements. These assumptions determine everything from rooftop unit capacity to duct sizing and airflow distribution. But over time spaces and needs change.