How does a spa blower work? Holly July 26, 2021 08:37 Updated Follow A spa blower uses a fan to create air flow through the jets in your spa and creates a bubbling effect. Related articles How do the spa pillows attach? Ace Quick Reference Guide What is the difference between a Circulation and Boost Pump? What information do you need to replace my blower pump? Comments 0 comments Article is closed for comments.