There are a wide range of approaches to making windows more efficient, and it can be difficult to know which is best for a given situation. To provide some guidance, we've created a handy decision tree to quickly point you in the right direction.

Many different strategies have been employed to mitigate excessive moisture in the building envelope, with applicability and effectiveness varying by region, season, building characteristics, and type of construction.

Vendors are claiming that phase change building materials reduce energy use and shift the afternoon peak load. Are these claims accurate?