How long must an HVAC service company keep records of each disposed appliance with a charge of 5 to 50 pounds?

An HVAC service company is required to keep records of each disposed appliance that contains a refrigerant charge between 5 to 50 pounds for a duration of three years. This requirement aligns with regulations set forth by the Environmental Protection Agency (EPA) under the Clean Air Act, which aims to minimize environmental harm from refrigerants, particularly those that may deplete the ozone layer or contribute to climate change.

Maintaining these records is crucial for compliance and accountability, as they provide a documented history of refrigerant disposal, ensuring that appliances are handled responsibly and in accordance with regulatory expectations. The three-year retention period allows for oversight and auditing, ensuring that service providers are managing refrigerants properly and helping to prevent illegal releases into the atmosphere.