267. Get the Air Back
28 Jan 2026 · 2 min
Derek Cole talks HVAC return-air design with a guest who explains why you need multiple return vents in different rooms. Drawing conditioned air back into your unit instead of pulling from crawlspaces or attics saves energy and improves comfort.
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Foreign. Hey, this is Derek Cole and welcome to the Derek Cole Podcast. This podcast is all about home comfort and energy savings. The majority is really comprised of short audio clips of a device and answers to questions that we've been asked over the years. We also kind of sprinkle in the Ask Derek Cole show audio, which is a much longer Q and A kind of program. If you like this episode, and I hope you do, I would love for you to share it on social with others. Just take a screenshot of the program and hashtag it Derek Cole so I can see you. But let's get in to today's episode.
You want to make it as easy as possible for the air to get back to the unit. So the bigger the return and the more you have in these different locations where it can be closed off, the better. Because you want to make it very easy. Otherwise the unit is going to get the air needs. It's going to suck it through the crawl space to the attic to the outside. It's going to get the air wants to get to operate, but you want to control it. You want it to be cool or warm filtered air from your return, not from the outside, which is unconditioned air.
Right?
So that'll save you energy and the unit will not have to work as hard to get the air back to it.
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