**A certifiable set of practices for building houses that require very little energy to live in.** Passive Houses are houses built to a performance-based standard for requiring very little energy for heating and cooling. Seems to be a European thing. It's not overly prescriptive about how it's done, but keys in on great insulation and minimized air transfer. The standard dictates: - No more than 15kWh per square meter for ANNUAL heating and cooling - No more than 60kWh/m^2 for all electricity in a year. - No more air than 60% the volume of the house can leave the house over the course of an hour. **** # More ## Source - [Exploring Passive House Design - 90% Energy Savings!](https://youtu.be/secB3R0sIYU) ## Related - [[Tiny House]]