Hello everyone, I've been hearing a lot about air duct cleaning lately, and I'm wondering if it's something I should invest in for my home. I know it can improve air quality, but I'm curious to know if anyone has had a noticeable difference in their home's air quality or energy efficiency after having it done. Some specific questions I have: • How do I know if my air ducts really need cleaning? • Are there any particular signs that indicate it's time to clean them? • How much does it typically cost, and is it worth the investment? • Does it make a noticeable difference in reducing dust, allergens, or odors? • Should I hire a professional, or can this be done as a DIY project? Would love to hear your experiences and insights! Thanks in advance!