It’s vital for HVAC professionals to have a thorough understanding of the different types of heating and cooling loads used to design HVAC systems. But it’s helpful for builders and other construction professionals to understand these terms as well as they factor HVAC performance into the overall comfort of their homes. In ACHR News, Jesse Marcus, former director of residential and commercial business development at the Propane Education & Research Council, describes the three different types of HVAC loads and how they relate to a system’s ability to achieve peak performance.

“The process of determining heating and cooling loads plays an essential role in sizing air conditioners, heat pumps, and furnaces,” Marcus writes. “Many existing homes actually have grossly oversized heating oil or propane furnaces, resulting in heating systems that blast warm air — almost too quickly — when the thermostat calls for heat. When a furnace is sized for the home’s actual heating load, it offers greater comfort with what’s often a smaller, less expensive furnace.”

High-efficiency propane furnaces, he adds, offer efficiency ratings from 90 to 98 percent and can provide space heating for both small floorplans and large custom homes, making them an excellent fit in a variety of projects.

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