A service company keeps invoices showing refrigerant added to and recovered from customer appliances. Under Section 608, these records are important because:

解析

Refrigerant service records let owners of appliances with 50 or more pounds calculate annual leak rates and let EPA verify compliance during inspections, so they carry real regulatory weight. They are not merely marketing documents, they are retained (generally three years) rather than destroyed after 30 days, and they are not optional for covered equipment. Accurate records protect both the owner and the servicing technician.