Final answer:
The EPA recommends the service practice of 'recovery and recycling' to efficiently conserve refrigerant and minimize environmental impact.
Step-by-step explanation:
The EPA recommends the service practice of recovery and recycling to conserve refrigerant.
When servicing refrigeration systems, it's crucial to follow environmentally-friendly practices and regulations. Overcharging the system can lead to inefficient operation and potential harm to the environment. Adding leak sealants might offer a temporary fix but doesn't address the underlying issue and could potentially damage the system or the environment. Allowing minor leaks goes against the efforts to conserve refrigerants and protect the ozone layer.
Thus, the best practice according to the EPA is the recovery and recycling of refrigerants. This process involves the removal, containment, and proper disposal or reclamation of refrigerant from the system. Recovery and recycling help to minimize the release of refrigerants into the atmosphere which can contribute to ozone depletion and global warming.