RHA brought together industry experts, contractors and manufacturers from around the country to share insights and experience on HPWH retrofit installations to create this Best Practices Field Guide. The Field Guide provides best practices as a basis for sound training and just-in-time learning to contractors when they are in the field installing HPWHs. It offers step-by-step visual instructions and checklists to use in the field, a checklist for instructors creating new curricula and information for those developing guidelines, standards and certifications