Christian advocates that buildings take a system-level approach to achieving these goals, what he terms Sustainable IAQ. He recently spearheaded a collaboration with other leading IAQ and energy efficiency organizations to detail the Clean First framework, a four-step process for achieving low energy, high-IAQ, climate resilient buildings. The seven collaborators – 75F, Awair, enVerid, GIGA, Oxygen8, Planled and SafeTraces – published in August 2022 a white paper geared for building owners and operators, architects, energy efficiency consultants, mechanical engineers and contractors called “How to Achieve Sustainable Indoor Air Quality: A Roadmap to Simultaneously Improving Indoor Air Quality & Meeting Building Decarbonization and Climate Resiliency Goals.”