When we talk about passive house or passive system design is the first thing anyone mentions energy efficiency.
Passive house is an extremely energy-saving home in which it is possible to maintain a comfortable indoor climate without active heating and cooling systems.
As of 2010, more than 15,000 buildings in Europe had been built or remodeled to the passive house standard [source: Passive House Institute US]. Only a handful of passive houses have been built in the United States, but homebuyers here are beginning to inquire about this eco-friendly option, and the Passive House Institute US has begun to test and develop efficient models for hot and humid climates such as Florida, where cooling is a bigger challenge than heating [source: Passive House Institute US].
Will your next home be a passive house?