
After only 2 months of regular use, a used PC fan is of such terrible quality that it is already making horrible squeaking noises, which WD-40 temporarily eliminates. This usually happens when the fan is many years old and nearing the end of its life. My PC's fans lasted over 10 years before I had to replace them. They were used much more often in everyday life. Good quality PC fans are VERY CHEAP and often sold in kits, there was no reason to skimp on this part but they did.

UL Certified 120V Unheated Awoco 48 Super Power 2 Speeds 1650CFM Commercial Indoor Air Curtain With Free Door Switch
23 Review

White Senville Dual Zone Mini Split Air Conditioner Heat Pump, 28000 BTU, Alexa Compatible - SENA-30HF/D
21 Review

π₯Ά LG TC09GQR Split System Air Conditioner - White
11 Review

Senville AURA: Energy Star Mini Split Heat Pump W/ 9000 BTU & Alexa Compatibility
13 Review