Hot Air

Hot Air

Join Technical Editor, Rebecca Matyasovski, in brief talks with authors of articles featured in monthly ASHRAE Journal issues. Interested in reaching the global HVACR engineering leaders with one program? Contact Greg Martin at 01 678-539-1174 | gmartin@ashrae.org.

Episodes

December 19, 2025 10 mins

Join ASHRAE Journal technical editor Rebecca Norris and Andy Pearson as they discuss the centenary of domestic refrigeration, exploring its historical challenges and innovations that continue to impact modern technology.

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Join ASHRAE Journal Technical Editor Rebecca Norris and Darrell Peil, who discuss the often-overlooked benefits of pipe insulation and its impact on energy savings.

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Join ASHRAE Journal Technical Editor Rebecca Norris and Austin Shelnutt as they discuss liquid cooling solutions for data centers, focusing on cold plate design and energy efficiency.

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Join Rebecca Norris and Mahmood Farzaneh Gord as they explore the benefits of duct sealing, highlighting how it can lead to energy savings in commercial buildings.

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Join Journal Technical Editor Rebecca Matyasovski and Alexander Butkus as they discuss the advantages of heat pumps over natural gas furnaces, highlighting energy savings and cost benefits.

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Join ASHRAE Journal technical editor Rebecca Matyasovski and guest David Schurk as they delve into the complexities of managing temperature and humidity in hospitals, exploring the benefits of reducing reheat to improve HVAC&D system sustainability. 

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Join Journal Technical Editor Rebecca Matyasovski and Joseph Schwartz as they discuss the transformation of a decommissioned power plant at Michigan State University into a state-of-the-art STEM teaching and learning facility. 

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Join Journal Technical Editor Rebecca Matyasovski and Matthew Strebe in this chat about recommissioning a church building to optimize energy efficiency and reduce natural gas consumption.



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Mold problems are more common than most people realize in both new and older single-family and multifamily housing, potentially causing serious indoor air quality (IAQ) problems. Join Journal Technical Editor Rebecca Matyasovski and George Tsongas as they discuss mold problems inside housing and why they are critical to address.

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Join Journal Technical Editor Rebecca Matyasovski along with guests Apoorv Khanuja and Amanda Webb as they discuss recommendations and more for naming and categorizing energy efficiency measures (EEMs). In the first recommendation? Clearly describe what’s being done.

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Join David Traxler and Journal Technical Editor Rebecca Matyasovski as they discuss some of the patterns he found when studying 50 energy efficient net zero energy buildings.

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Building graphics are the windows into system performance. Join Journal Technical Editor Rebecca Matyasovski and Brian Clark as they discuss what makes a good building graphic and tips to improve them.

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Sustainability starts with maintenance. Michael Gallagher helps us remember that if a sustainable building can’t be kept running the way it was intended to run, it isn’t sustainable.

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Join Kathleen Owen and Journal technical editor Rebecca Matyasovski as they discuss some ins and outs of particle filters, including particle capture and the economic impact of different filters.

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Performing arts patrons don’t usually think about HVAC design when deciding to attend an event. But if the system designers don’t notice, patrons might. Join Coral Pais as she discusses how acoustics were considered when designing a Cleveland performing arts center.

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Surgical patients release waste anesthetic gases that can cause potential health effects for people who care for patients in the post-anesthesia care unit. Kishor Khankari, Ph.D., Fellow ASHRAE, discusses optimizing its ventilation design to effectively remove these gases and reduce exposure. 

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Join Michael Licastro, Associate Member ASHRAE, and Technical Editor Rebecca Matyasovski as they discuss using hydronic HVAC systems to aid in decarbonization.

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Did you know milk dust and flour, among other dusts, are explosive? Combustible dusts require the use of dust collectors. Join Chris Jester, Associate Member ASHRAE, and Technical Editor Rebecca Matyasovski as they discuss the design of dust collector systems, including air velocity and duct sizing, safety considerations, motor requirements and relevant codes.


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Join Mike Gallagher, P.E., Life Member ASHRAE, and Technical Editor Rebecca Matyasovski as they discuss the monthslong saga to fix what started out as a small gas leak in the furnace room of his church—just before Christmas.

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Andy Pearson shares some of the upheaval in which scientist Sadi Carnot performed his work, including for the science we now call “thermodynamics.”

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