Low Noise YY-1HP Air-Cooled Laser Chiller for Welding & Cutting Heads Our low-noise YY-1HP air-cooled laser chiller is specially optimized for cooling laser welding heads and small laser cutting optical assemblies. The fan blade structure has been upgraded, a low-vibration compressor selected, and noise-reduction buffer parts added inside the cabinet, effectively suppressing running noise during continuous operation to create a quieter, more comfortable workshop environment.