Mini-Split: Two-Story Houses And Stratification

A common complaint from occupants of lowor moderate cost two-story houses and apartments is that their “upstairs” flooris often uncomfortably warm in the summer, while their “main” floor is either comfortableor too cool. The source of this problem can usually be traced to the exclusiveuse of single-zone all-air HVAC systems, which are the most common type used inmuch of North America’s housing. This article describes one practicalenergy-saving solution to this cooling-mode stratification problem in such anexisting multistory residence.