EP249 The Hidden Hazards: CO, H₂S and the Tech Behind Modern Gas Detection With Dave Massner from Sensorcon (December 2025)
Release Date: 12/19/2025
EP282 Building Better Leaders: Jane Sidebottom on Mentorship, Workforce, and the Future of HVACR (July 2026)
Building HVAC Science
Quotes from the episode: "It's not just about features and benefits anymore. It's about the impact your products have on your customer's business." "Training teaches skills. Mentorship builds confidence." "Someone somewhere saw that we were good at something and helped us channel it." "Words matter." The HVACR industry has talked about the workforce shortage for decades—but are we finally making progress? In this episode, Bill sits down with Jane Sidebottom,...
info_outline
EP281 Building a Diagnostic-First HVAC Company with Derek Aarstad
Building HVAC Science
Quotes from the episode: "When your HVAC system is performing at 100%, but the home isn't, the problem isn't the equipment anymore." "Our job is to be investigators first and installers second." "Homeowners don't just need to know their HVAC system. They need to know their home." "If you think I'm doing too much testing, I'd argue you're probably not doing enough." Many HVAC contractors say they focus on comfort, but Derek Aarstad has built his entire business around proving where comfort...
info_outline
EP280 What 130 Million Homes Can Teach HVAC with Scott Rosenberg (June 2026)
Building HVAC Science
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 simply having a heat pump or solar system. Talking about it during the sales process had a positive effect on the home’s sale price.” How can HVAC contractors identify the homeowners most likely to...
info_outline
EP279 Curiosity, Heat Pumps, and the Details That Matter – A Conversation with Edward Louie (July 2026)
Building HVAC Science
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 Spohn for a thoughtful discussion that goes far beyond heat pumps. Known throughout the building science community for his data-driven LinkedIn posts and willingness to challenge conventional wisdom, Edward...
info_outline
EP278 From Boiler Timers to Predictive Control: Smarter Heat for Multifamily Buildings with Heather Zoberman from Entech (June 2026)
Building HVAC Science
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 Science, Bill speaks with Heather Zoberman of ENTECH about how older multifamily buildings can move from basic, wasteful boiler control toward smarter, data-driven heating and cooling management. Heather explains...
info_outline
EP277 Dirty Little Secret: Why Heat Pumps Need Deep Cleaning with Gabriel Erde-Cohen (June 2026)
Building HVAC Science
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 Science, Bill talks with Gabriel Erde-Cohen, founder of We Clean Heat Pumps, about an often-overlooked part of electrification: what happens to heat pumps after installation. Gabriel shares how his Vermont-based business...
info_outline
EP276 When “Passed Inspection” Isn’t Good Enough with Cy Porter (May 2026)
Building HVAC Science
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 of CYFY Home Inspections, an Arizona-based home inspector known for his blunt, high-energy social media videos that expose defects in new-construction homes. Cy specializes in one-year and two-year warranty inspections,...
info_outline
EP275 The Sound of Better Buildings with Kieren McCord (May 2026)
Building HVAC Science
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 about.” In this episode of the Building HVAC Science Podcast, Bill Spohn welcomes Kieren McCord, a research scientist at Pacific Northwest National Laboratory, for a conversation about indoor environmental...
info_outline
EP274 The Heat Pump Summit Is Building More Than Better Systems with Brent Davidson (May 2026)
Building HVAC Science
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 Science, Bill welcomes back Brent Davidson of the U.S. Heat Pump Summit for his third appearance. Brent shares what emerged from the first full-scale national Heat Pump Summit held in Massachusetts in November 2025,...
info_outline
EP273 Think Like an Air Molecule with Dan Stradford (May 2026)
Building HVAC Science
Quotes from the episode: “Ducts matter. Nobody cares much about them until something goes wrong.” “HVAC systems are designed assuming clean, bare sheet metal.” “Even a small layer of dust can become a mountain range to an air molecule.” “Think like an air molecule.” In this episode, Bill speaks with Dan Stradford of Action Duct Cleaning about what really happens inside HVAC duct systems over time and why cleaning can matter more than many people realize. Dan shares how the duct cleaning industry evolved from its “wild west” early days into a more standardized field through...
info_outlineEpisode quotes:
“Hydrogen sulfide doesn’t announce itself. It can drift in, hit your mucus membranes, and start causing real harm before you know it’s there.”
“You can’t treat sensor response like magic—it’s physics, chemistry, and smart filtering working together to tell you what’s actually happening in the space.”
In this episode, Bill & Eric sit down with Dave Massner from Sensorcon, a long-time technical contributor in the world of portable gas detection, to dig into the realities behind CO, H₂S, and O₂ sensing in both HVAC and industrial environments. Bill recaps the origins of their relationship with Sensorcon, which sets the stage for Dave to explain why gas detection still matters and brings in real-world examples—from oil fields to everyday equipment rooms—to show how invisible hazards shape how techs should approach safety.
The conversation explores lesser-understood threats like hydrogen sulfide (H₂S)—a gas that can travel with the wind in oil and gas regions and incapacitate workers before they realize it’s there. We discuss the physiology, the chemistry, and the grim speed at which exposure can become deadly. From there, we shift to oxygen depletion, clarifying what “too low” actually means in field work and why measuring O₂ is just as important as detecting toxic gases. The episode also gets into the nuts and bolts of sensor behavior: signal-to-noise ratios, filtering, raw output, response time, and the clever algorithms that help instruments stabilize faster without sacrificing accuracy.
Toward the end, we highlight Sensorcon’s ongoing efforts in training, education, and transparency, pointing listeners to the company’s technical blog posts, videos, and calibration resources. We also make the case for low-level CO alarms and why TruTech Tools has championed them for over a decade. As we wrap up, we leave listeners with a simple takeaway: understand your sensors, understand your risks, and choose equipment that treats safety as something more than a checkbox.
Dave’s LinkedIn: https://www.linkedin.com/in/david-massner-30291189/
Sensorcon at TTT: https://trutechtools.com/sensorcon-solutions.html
Sensorcon blog posts:https://sensorcon-sensing-products-by-molex.myshopify.com/blogs/news/
Sensorcon videos: https://sensorcon-sensing-products-by-molex.myshopify.com/pages/inspector-videos
Low-level CO alarms at TruTech Tools: https://trutechtools.com/installedco
This episode was recorded in December 2025.