Rephonic
Artwork for Hot Air
ASHRAE
HVAC
Heat Pumps
Particle Filters
Decarbonization
Indoor Air Quality
Energy Efficiency
Building Performance
Net Zero Energy Buildings
Thermodynamics
Pipe Insulation
Building Graphics
MERV Ratings
Air Cleaners
Natural Gas
Dust Collection Systems
Energy Efficiency Measures
Maltz Performing Arts Center
Hydronic HVAC Systems
Mold

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.

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Artwork for Hot Air

Latest Episodes

Join host Rebecca Norris along with guests Asit Kumar Mishra and Robert Bean as they explore why there are more myths associated with thermal comfort than other areas of HVAC&R.

Join Rebecca Norris and Paul Raymer as they discuss practical tips for contractors and consumers alike to make informed decisions about residential heat pump systems.

Join Rebecca Norris and William Stober as they explore the unique challenges of controlled environment horticulture and why growing cannabis is particularly energy-intensive.

Join guest host Allison Hambrick and Matt Price as they discuss the key differences between hot gas bypass and hot gas reheat in HVAC systems and why they should not be confused.

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Recent Guests

Paul Raymer
Senior Advisor in Building Science at ICF International; ASHRAE Life member; works with the 62.2 Committee
ICF International
Episode: 41. Heat Pump Questions Answered With Paul Raymer
William Stober
Mechanical engineer focusing on indoor grow environments; studied cooling and dehumidification loads in enclosed grow rooms
Sonoma County, California (industry researcher)
Episode: 40. The Energy-Intensive Mechanics of Indoor Cannabis Growth With William Stober
Matt Price
Licensed engineer, founder of Day 3 Academy, East Tennessee Chapter CTTC Chair and President-elect
Day 3 Academy
Episode: 39. Hot Gas Havoc With Matt Price
Andy Pearson
Engineer in industrial refrigeration and ASHRAE Journal contributor
ASHRAE Journal
Episode: 37. Celebrating 100 Years of the Domestic Refrigerator with Andy Pearson
Darrell Peil
managerial team member for Kanoff Insulation in Sales and Marketing
Kanoff Insulation
Episode: 36. Pipe Insulation 101 With Darrell Peil
Austin Shelnutt
CEO of Strategic Thermal Labs
Strategic Thermal Labs
Episode: 35. Server Cold Plate Design With Austin Shelnutt
Mahmood Farzaneh Gord
Chief technologist at AeroSeal, leading engineers in developing and optimizing sealing technology
AeroSeal
Episode: 34. Energy Savings Impacts of Duct Sealing With Mahmood Farzaneh Gord
Alexander Butkus
Veteran in the consulting engineering industry with extensive energy and HVAC experience
Independent / Consulting engineering
Episode: 33. Why You Should Install a Heat Pump When Replacing Your Residential HVAC With Alexander Butkus
David Schurk
National Sales Manager for Innovative Air Technologies; ASHRAE Life member and Distinguished Lecturer
Innovative Air Technologies
Episode: 32. Reducing Heat to Improve HVAC&D System Sustainability With David Schurk

Host

Rebecca Matyasovski
Technical Editor, focusing on HVAC knowledge and technology discussion within the industry.

Reviews

4.7 out of 5 stars from 11 ratings
  • Short and Sweet

    Great bite-sized insights.

    Apple Podcasts
    5
    Informative Millennial
    United States7 months ago
  • Great casual podcast about HVACR and science

    Love listening to the little snippets of ASHRAE goodness. Always look forward to more hot air.

    Apple Podcasts
    5
    Jovialhavoc
    United States3 years ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Listeners appreciate the practical insights into the HVACR industry and the engaging discussions with experts.
They find value in the short, informative segments that cover various topics, making it accessible for those in technical fields.
Overall, the vibe is positive, with a focus on enhancing knowledge in HVACR.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Apple Podcasts
#135
Singapore/News/Tech News
Apple Podcasts
#183
Taiwan/News/Tech News
Apple Podcasts
#199
Sweden/News/Tech News

Talking Points

Recent interactions between the hosts and their guests.

41. Heat Pump Questions Answered With Paul Raymer
Q: Can you please tell us a little bit about yourself?
I am a Senior Advisor in Building Science at ICF International and an ASHRAE Life member working with the 62.2 Committee for about 30 years, focusing on building efficiency and indoor comfort.
37. Celebrating 100 Years of the Domestic Refrigerator with Andy Pearson
Q: What is the connection between the 2025 milestone and today's industry challenges?
The 2025 milestone marks a century of mass-produced refrigeration, illustrating how past decisions around safety and technology inform current practice and evolution in the industry, including ongoing refrigerant transitions and safety considerations.
37. Celebrating 100 Years of the Domestic Refrigerator with Andy Pearson
Q: Tell our listeners why you wrote the article.
I wrote the article to explore the long historical arc of refrigeration development, drawing on archival material from ASHRAE and library sources to illuminate how early challenges, such as safety and refrigerant choice, shaped the domestic market.
40. The Energy-Intensive Mechanics of Indoor Cannabis Growth With William Stober
Q: Could you please tell us a little bit about yourself?
The guest describes his background as a mechanical engineer focusing on building environments and increasingly on indoor grow systems, explaining how his work now concentrates on cooling, dehumidification, and energy modeling for controlled environments.
39. Hot Gas Havoc With Matt Price
Q: You wrote a column in the March 2026 ASHRAE Journal about the confusion regarding hot gas reheat and hot gas bypass. What do we need to know before we start?
The key point is that hot gas bypass and hot gas reheat are not the same; bypass tends to stabilize the compressor by loading the evaporator, while reheat adds useful heat to the air stream for comfort and IAQ. Standards like 90.1, 55, and 62.1 govern how these features should be used to optimize energy efficiency and indoor environment, so professionals should pause and verify which feature is actually required before specifying.

Audience Metrics

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Frequently Asked Questions About Hot Air

What is Hot Air about and what kind of topics does it cover?

Focused on the world of HVACR (heating, ventilation, air conditioning, and refrigeration), discussions cover a range of critical topics. The content often features insights from experts regarding energy efficiency measures, air quality, and innovative technologies shaping the industry. Listeners can expect to learn about practical solutions to common problems within HVACR, as well as emerging trends, making it a valuable resource for professionals seeking to improve their understanding of current challenges and advancements in the field.

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Which podcasts are similar to Hot Air?

These podcasts share a similar audience with Hot Air:

1. The Indicator from Planet Money
2. Freakonomics Radio
3. Planet Money
4. The Daily
5. Up First from NPR

How many episodes of Hot Air are there?

Hot Air launched 3 years ago and published 42 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on Hot Air?

Recent guests on Hot Air include:

1. Paul Raymer
2. William Stober
3. Matt Price
4. Andy Pearson
5. Darrell Peil
6. Austin Shelnutt
7. Mahmood Farzaneh Gord
8. Alexander Butkus

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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