Managing HVAC in High Performance Homes: How to Provide Comfort and Reduce Builder Liability
Tightly air-sealed, well-insulated buildings combined with increased ventilation rates has become mainstream, and in many cases required by code, and there is no going back. Better construction requires less heating and cooling, and better moisture management. In many cases, traditional HVAC equipment will not provide adequate space conditioning in high performance buildings, leading to poor heating, cooling, and humidity control. These problems lead to uncomfortable homes, excess energy use, and liability for the builder. It is critical for builders to understand HVAC design requirements and how to properly choose “right-sized” equipment for their projects. Real-world data and case studies will be presented to show that when it comes to occupant comfort and health, HVAC design can no longer be an afterthought. Strong graphic images will be used to visually demonstrate building science principals and show how the old ways of addressing heating, cooling, and moisture management are no longer viable. We will demonstrate how high performance building changes the dynamics of heat and moisture movement in and out of buildings, and the affect on HVAC design and equipment selection. This seminar will include two unique perspectives on the subject. One long time builder and building science expert with extensive experience in affordable housing will review designing and selecting HVAC equipment for high performance buildings. Then we will hear from a manufacturer that pioneered whole house dedicated moisture control solution about currently available solutions and products in the pipeline to improve ventilation and humidity control in high performance homes.