Building HVAC Science
Exploring the science, people, and practices shaping better buildings. The Building HVAC Science Podcast dives into both the technical and human sides of heating, ventilation, air conditioning, and building performance. Hosted by industry veteran Bill Spohn, CEO and co-owner of TruTech Tools, the show reflects Bill's passion for advancing the HVAC craft through practical knowledge, curiosity, and conversation. With more than 250 episodes and counting, the podcast features discussions with contractors, distributors, manufacturers, educators, and thought leaders from across the HVAC and building science communities. Each episode blends field experience with broader industry perspective, helping professionals stay ahead of trends, sharpen their skills, and build stronger businesses. Topics include: New tools, technologies, and field practices Real-world case studies and lessons learned Building performance, comfort, and indoor air quality Industry innovation, workforce development, and the human side of the trades Whether you're a technician in the field, a business owner, a manufacturer, or simply curious about how buildings breathe and perform, Building HVAC Science connects you with the ideas and voices moving the industry forward. Listen on Apple Podcasts, Spotify, or wherever you get your podcasts. This show is a production of TruTech Tools®, LTD.
Episodes
Quotes from the episode:
"A fan's only as good as the duc...
Quotes from the episode:
"What we think is an HVAC problem is more so a building problem."
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"Are you still learning, or did you stop learning in your career?"
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"Business
Quotes from the episode:
"The HVAC system is just designed to match the rate at which that home is gaining or losing heat." — Spencer Ro...
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"You can't really separate good air quality from good HVAC performance."
Quotes from the episode:
"You don't know what you don't know."
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"The only way that change is going to occur is if I make it happen."
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"I
Quotes from the episode:
"Net zero wasn't the goal—it was the outcome of making hundreds of good building science decisions."
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"This is no longer a push-pull industry. This is a thinking person's game now."
Quotes from the episode:
"It's not just about ...
Quotes from the episode:
"When your HVAC system is performing at 100%, but the home isn't, the problem isn't the equipment anymore."
Quotes from the episode:
"You sell an amazing product that represents the future of home heating and cooling. But selling it, promoting it, and capturing consumers' attention is hard. At 257, we use data to help you do that more efficiently."
"The best way to judge the effectiveness of machine learning and AI is by the outcome: Did I sell more at a lower cost?"
"It wasn't si...
Quotes from the episode:
"Comfort isn't just about air temperature—it's also about the temperature of everything around you."
"If it's difficult to maintain, eventually it simply won't be maintained."
"Stay curious about your built environment. Pay attention, ask questions, and keep learning."
Edward Louie of Pacific Northwest National Laboratory joins Bill ...
Quotes from the episode:
"Technology does its best work when it turns invisible problems into obvious next steps."
"Most buildings are already telling us what they need. The trick is finally learning how to listen."
"You can't optimize what you can't see, and old buildings have been hiding their stories in boiler rooms for decades."
In this episode of Building HVAC Sc...
Quotes from the episode:
"Heat pumps can't meet their promise if they're not properly maintained."
"Vacuuming the filter matters, but it is not the same thing as deep cleaning the system."
"If it has a coil and a fan, we can clean it."
"Electrification only works as intended when the equipment keeps working as intended."
In this episode of Building HVAC S...
Quotes from the episode:
"Passed inspection is not the same as built correctly."
"The best inspectors keep learning, because no one person masters every trade, every code, and every overlap."
"Small defects do not stay small when they are hidden behind walls, ceilings, and warranty paperwork."
In this episode of Building HVAC Science, Bill Spohn talks with Cy Porter o...
Quotes from the episode:
"The tighter your envelope, the more attention you have to pay to ventilation and indoor air quality."
"The acoustics of the ordinary rarely gets attention."
"There's so much good work being done, so much data being collected, and oftentimes it doesn't leave the hard drive."
"Noise annoyance may be one of the things people are most passionate ...
Quotes from the episode:
"Stop trying to HVAC your way out of bad buildings, and your results will market themselves."
"The quality work and word of mouth are real when you're doing building science-backed work with quality staff."
"Come with problems you're actively trying to work on and meet others who can help you work on them."
In this episode of Building HVAC Sci...
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