Before selecting equipment
Confirm the permit application date, building type, climate zone, existing ducts, equipment match, controls, ventilation, electrical scope, and required acceptance or verification steps.
Keep the documentation chain intact
Product submittals and AHRI references support the equipment decision, but they do not replace the permit, compliance forms, installation verification, or inspection.
Primary sources
Use these agencies as the source of truth. Summit summarizes them for equipment planning and does not provide legal, tax, engineering, or permit advice.