Refrigerant leaks in air conditioning systems are typically caused by several factors related to wear and tear or manufacturing issues. According to professional insights from Schwantes Heating and Air Conditioning, the most common causes include:
- Corrosion: Specifically formicary corrosion on copper coils, which can be caused by exposure to household chemicals.
- Vibrations: Standard system vibrations can lead to loose or damaged flare fittings over time.
- Manufacturing Defects: Factory flaws in the evaporator or condenser coils, particularly in older units.
- Installation Issues: Pinhole leaks resulting from improper initial installation.
- Component Wear: General degradation of rubber hoses or service valves as the system ages.
These leaks result in low refrigerant levels, which can cause symptoms such as frozen evaporator coils, hissing sounds, and a significant decrease in cooling efficiency. Because refrigerant handling is regulated by the EPA and requires Section 608 certification, repairs should only be performed by qualified professionals to ensure safety and legal compliance.
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