In air conditioning manufacturing, the sealing of copper tubes after refrigerant charging is a critical process that directly impacts product reliability and safety. With the industry transitioning toward new-generation refrigerants such as R410a and R290 – which are more environmentally friendly but also flammable and explosive – traditional open-flame brazing is increasingly seen as a safety risk-10. This has created a significant opportunity for ultrasonic tube sealing technology to emerge as a preferred alternative.

The global market for ultrasonic copper tube sealing machines reflects this growing adoption. In 2025, global production reached approximately 2,000 units, with market prices ranging from US$5,000 to US$35,000 per unit-1. Industry analysts project the market will grow from US$28.15 million in 2025 to US$39.01 million by 2032, representing a compound annual growth rate of 4.7%-1.