What might a whistling sound by vents indicate?

Derek ColeGM, Simmons One Hour Heating & Air · AI HVAC Answers

483. Air Noise With HVAC System

28 Jan 2026 · 0 min

Episode

28 Jan 2026 · 0 min

0:00

This content was created by Derek Cole. This content was uploaded by Derek Cole. This is a podcast episode titled "483. Air Noise With HVAC System" (PODCAST) dated 2023-01-17. The excerpt is a short Q&A: a listener (Speaker A) asks about a whistling sound near vents, and Derek Cole (Speaker B), host of the Derek Cole Podcast, answers that the noise likely indicates air leaks in the crawl space or ductwork and explains how air travels and what to check. The host also provides promotional calls-to-action (social/Instagram handle Derek Mcole, hashtag #HealthyHome, request for reviews, and a link to simmons1hour.com) and emphasizes home comfort and energy savings.

Questions this episode answers

Air entering the crawl space (e.g., from wind) and traveling up into the house through leaks around the grill or leaks in the duct system.

Sometimes I can hear a kind of whistling sound by my vents even when my heat is not on. Does that mean that I have a leak or a broken piece of duct?
Hey everyone, I'm Derek Cole, host of the Derek Cole Podcast and we believe in taking the time to explain how things work for your air at home or your business. Let's get into today's episode. Please listen closely and maybe even take some notes so you can remember these insights of home comfort and energy savings and share this episode with three of your friends because we all need to share better ways to be more comfortable at home. Be sure to tag me or DM me on Instagram Derek Mcole so I can say hi, thanks again for listening. And let's begin. Could mean both. If you're getting whistling from the grill from under the house, I'm assuming is where it's at under house, then it's probably windy or outside and it's coming into your crawl space and then coming up because air does travel up. If you don't believe me, check out the next person smoking a cigarette and see where the smoke goes. It will go up. So yeah, you have a leak under the house or the air is getting in there and then coming back up and then you have a leak in your duct system which is allowing that air to come up. So you could have a leak around that grill under the house or you could have a leak in the duct system coming up under the house. So does that make sense? So you could have two problems there or one problem. Either way, you got a problem. Either way, there's an issue. There is an issue either way. But yeah, there is, you know, excessive air coming through. If you're hearing a whistling noise. Okay. I hope you enjoyed this episode of the Derek Cole Podcast. Tell some people about this episode. It's on each of us really to spread the better ways to be healthier and more comfortable in our homes and workspaces. I'm asking you to be the dealer of positive and life changing messages in your circle of influence. Take a screenshot right now and share this screenshot and the link to this episode with three of your friends to today share on social media use the hashtag Healthy Home. That's Healthy Home. We are always giving away shout outs prizes to our community. If you would like to help me personally then please rate and review on Apple podcast. Give us some stars. Leave a review because that stuff actually does help and I read all the comments. So my last thought for today, please remember you deserve better air at home. And greater comfort at home. Don't settle for being uncomfortable for your heating air every single month. We are so thankful for having you here in our community and be sure to go deeper with us at simmons1hour.com.
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