When addressing indoor air quality, let’s not leave out existing homes and buildings. The same principles that make new zero energy buildings more healthy can also be applied to existing homes, whether during minor upgrades or major renovations. The return is in improved health and comfort. This is the final installment of our three-part series on indoor air quality and health.

As described in Part One, indoor air can be unhealthy. When you invest in zero energy, you’ll also get something even more important than money in return. Zero energy buildings are also healthier. Here in Part Two of this three-part series, you can read about all the components of zero energy buildings that make this invaluable benefit possible.