In 1987, John founded Saturn Resource Management and began publishing books on energy conservation and energy efficiency for buildings. Since then, he has authored or co-authored dozens of energy publications. The best known on these are Residential Energy: Cost Savings and Comfort for Existing Buildings, Your Mobile Home: Energy and Repair Guide for Manufactured Housing, and Saturn's popular weatherization field guides, which are used by approximately 32 state weatherization programs.
John recently spent three years in the Czech Republic, where he investigated European construction and retrofit techniques. His research included hydronic heating efficiency, insulation methods, air sealing techniques, and moisture control for multifamily masonry buildings.
John has extensive experience researching and developing energy-related publications for technicians, government officials, industry representatives, and the general public. He is the author or co-author of 8 books and approximately 40 shorter publications on energy efficiency. He is also a technical illustrator, photographer, and desktop publisher.