Cool Air, Hot Takes podcast | Listen online for free

21 episodes

District Energy Heat Pumps: Bigger, Hotter, Cleaner
01/13/2026 | 34 mins.
Today, we’re wrapping season 3 with a deep dive into industrial high-temperature heat pumps. Hosts Charlie Jelen and Dan Gentry talk with Mobola Dosumu, National Sales Manager for Heat Pumps at Everllence, whose custom-engineered systems deliver multi-megawatt heating and up to 350°C steam for heavy industry and district energy. Mobola explains why these heat pumps aren’t “what’s next”, they’re already here, and how they’re accelerating industrial decarbonization.
We also have:
HVAC Headlines: Should you really cover your AC unit in winter? Plus, how AI could boost HVAC productivity by 40%, and why predictive maintenance might finally get its moment.
Dan in the Factory: This week Dan meets Billy Rice, Mechanical Commissioning Agent, to talk about what happens inside a fan-wall test, and a pretty wild air-pressure job story.
Stat of the Day: The funniest (and strangest) statistics about Americans - from coupon dates to conspiracy theories.
We want your hot takes and questions! Email [email protected], drop a comment on YouTube or Spotify, or leave us a review on Apple Podcasts. Don’t forget to rate and follow too!
Cool Air, Hot TakesTM is a Trane Commercial podcast exploring bold innovations, emerging trends, and game-changing tech in HVAC, energy, and the built environment.
Follow for new episodes every two weeks and stream on Spotify, Apple Podcasts, YouTube, or wherever you get your podcasts.
The Hottest (and Coldest) Takes of 2025
12/30/2025 | 26 mins.
In this special end of year episode, hosts Charlie Jelen and Dan Gentry are flying solo and taking you on a tour of 2025’s hottest (and coldest) takes. From bold industry predictions and legendary pop-ins, to the now iconic reminder to “never fall in love with a bearing technology,” the guys look back at the takes that shook the HVAC world, and the ones that never quite left the factory floor. (Yes, Dan, we’re looking at your season 1, episode 1 hot take. Was it the coldest of the year? You tell us.)
We also have:
HVAC Headlines: How Trane and NVIDIA are shaping AI thermal design
Hottest & Coldest Takes of 2025: the death of liquid cooling, bringing your own power to the data center industry and draining water heaters. Do you agree with Charlie and Dan?
Stat of the Day: which U.S. airline most deserves a middle seat on the naughty list for worst on-time performance?
We want your hot takes and questions! Email [email protected], drop a comment on YouTube or Spotify, or leave us a review on Apple Podcasts. Don’t forget to rate and follow too!
Cool Air, Hot TakesTM is a Trane Commercial podcast exploring bold innovations, emerging trends, and game-changing tech in HVAC, energy, and the built environment. Learn more at trane.com/coolairhottakes.

Follow for new episodes every two weeks and stream on Spotify, Apple Podcasts, YouTube, or wherever you get your podcasts.
HVAC Legends: Mick Schwedler’s 40+ Year Legacy
12/16/2025 | 35 mins.
Today, hosts Charlie Jelen and Dan Gentry are joined by an HVAC legend, Mick Schwedler. With more than 43 years at Trane and former Global ASHRAE President, Mick reflects on how the industry has evolved from floppy disks and early energy modeling to digital design, electrified heating, and systems-level innovation. He explains why giving engineers just a bit more time and budget leads to better, more efficient buildings, and why HVAC’s true impact goes far beyond comfort cooling. From supporting cold-chain vaccines to reducing emissions and protecting health, Mick shows how this industry improves lives and inspires the next generation of engineers.
We also have:
HVAC Headlines: the year HVAC “got run over by a reindeer,” Trane dives into liquid-to-chip cooling, and how to get your home winter-ready.
Hot or Not: A special 1980s HVAC edition with Mick. Is thermal storage still hot? Would CHP ever rule the world? Debate ensues.
Stat of the Day: Which countries rank highest for quality of life.
We want your hot takes and questions! Email [email protected], drop a comment on YouTube or Spotify, or leave us a review on Apple Podcasts. Don’t forget to rate and follow too!
Cool Air, Hot TakesTM is a Trane Commercial podcast exploring bold innovations, emerging trends, and game-changing tech in HVAC, energy, and the built environment. Learn more at trane.com/coolairhottakes.
Follow for new episodes every two weeks and stream on Spotify, Apple Podcasts, YouTube, or wherever you get your podcasts.
How Virtual Design is Changing Construction
12/02/2025 | 37 mins.
Today, Autodesk’s Director of Product Management, Ian Molloy, joins hosts Charlie Jelen and Dan Gentry to explore how digital design is transforming the built environment. We dig into where building information modelling (BIM) is heading, what truly defines a digital twin, and how Autodesk and Trane are closing the gap between modeling and load calculations. Ian also explains how prefab workflows are speeding up construction and how early design choices, from massing to HVAC systems, shape both operational and embodied carbon. Plus, we learn about the industry’s “more-on principle” and why right-sizing matters more than ever.
We also have:
HVAC Headlines: how yogurt-coated windows (yes, really) can lower the temperature of your home, and what’s been a tough year for residential shipments.
Dan in The Factory: We send Dan on a mission to find out the wildest job story from Area Service Manager, Bryon Wilfong.
Stat of the Day: The nation's priciest college tuition.
We want your hot takes and questions! Email [email protected], drop a comment on YouTube or Spotify, or leave us a review on Apple Podcasts. Don’t forget to rate and follow too!
Cool Air, Hot Takes ™ is a Trane Commercial podcast exploring bold innovations, emerging trends, and game-changing tech in HVAC, energy, and the built environment.

Follow for new episodes every two weeks and stream on Spotify, Apple Podcasts, YouTube, or wherever you get your podcasts.
Bring Your Own Power: Fueling Data Centers
11/18/2025 | 34 mins.
We’re back with another data-center-deep-dive - this time with Jason Espeseth, Principal Electrical Engineer at Geronimo Power. Together with hosts Charlie Jelen and Dan Gentry, Jason breaks down the rise of “bring your own power” data centers and explains how pairing wind, batteries, and firming gas near-site can dramatically reduce interconnection timelines and avoid passing grid costs to ratepayers. We also talk gen-ties, utility feeds for stability, and how some data centers could be powered by up to 70% renewable energy.
We also have:
HVAC Headlines: The first U.S. sodium-ion grid battery and what it means - could this reshape energy storage?
Hot or Not: Producer Elena asks Charlie and Dan: are microgrids the future of data centers? And are data centers the new monuments of our time?
Stat of the Day: Which country uses the most energy? (Spoiler: not who you think.)
We want your hot takes and questions! Email [email protected], drop a comment on YouTube or Spotify, or leave us a review on Apple Podcasts. Don’t forget to rate and follow too!
Cool Air, Hot Takes is a Trane Commercial podcast exploring bold innovations, emerging trends, and game-changing tech in HVAC, energy, and the built environment.
Follow for new episodes every two weeks and stream on Spotify, Apple Podcasts, YouTube, or wherever you get your podcasts.

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About Cool Air, Hot Takes

Welcome to Cool Air, Hot Takes, the podcast that’s as smart as your building’s thermostat and twice as fun. Hosted by Charlie Jelen and Dan Gentry, two HVAC pros with over 30 years of combined experience and a lifetime of friendship, this show is your go-to for the latest in heating, ventilation, and air conditioning, industry news, and cutting-edge HVAC trends. Charlie is a building-systems expert passionate about solving complex problems, and Dan, an Applications Engineer with a knack for energy-efficient design and HVAC troubleshooting, bring their expertise (and plenty of hot takes) to every episode. Together, they dive into topics like the latest trends and systems redefining buildings and Industrial systems , and the future of AI in the industry, from smart thermostats to data centers. They’ll look at what’s up with all these tech companies buying nuclear power plants, and what does it mean for the future of climate control? Expect in-depth interviews with industry-leading experts, practical tips for engineers and contractors, and funny stories from that job that went sideways. Whether you’re designing ductwork, conducting energy audits, or upgrading to sustainable HVAC systems, this podcast is built to keep you informed and entertained. We want to hear from you! Email us [email protected] with your questions, HVAC hacks, or the funniest thing that’s ever happened on a job, and we might feature it in an episode. Follow Cool Air, Hot Takes from Trane wherever you get your podcasts, and join us as we tackle the big questions and the finer points of thermodynamics—one hot take at a time. About Trane Commercial Trane Commercial, part of Trane Technologies, is a leading provider of innovative climate control solutions and energy services tailored for commercial environments. The company focuses on optimizing indoor climates through advanced HVAC systems, building automation, and sustainability initiatives. With a commitment to decarbonization, Trane aims to reduce the carbon footprint of buildings while enhancing comfort and efficiency. Learn more at: https://www.trane.com/commercial/north-america/ Meet the Hosts Charlie Jelen has been working with HVAC systems for over 15 years, specializing in sustainable solutions. At Trane Commercial North America, he focuses on advancing cutting edge building and industrial systems. With a background in consulting and system engineering, Charlie is committed to delivering solutions for the hardest challenges facing clients today. Dan Gentry is an Applications Engineer. With expertise in chiller plants, heat recovery, and heat pump systems, he focuses on reliable and efficient system design.

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