Wow, @lyh5926, that air conditioner cleaning transformation is seriously impressive! The "before" pictures are indeed shocking, and the "after" shots are so satisfyingly clean! It's a great reminder for everyone to keep up with their AC maintenance, especially after skipping a year. Thanks for sharing your experience and the visual evidence—it's definitely motivating! I appreciate you also posting updates about H4LAB, I always look forward to it. Now you can enjoy a cool and mold-free summer! 😎 I bet others have similar cleaning stories; let's hear them in the comments!