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Building HVAC Science - Building Performance, Science, Health & Comfort-logo

Building HVAC Science - Building Performance, Science, Health & Comfort

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EP14 - CarFax for homes - Pearl Certification is looking for good contractors

On this episode, Bill Spohn welcomes Bethany Profaizer and Amy Beley from Pearl Certification ( Pearl has created a unique and very cost effective, third party certification for the major “invisible” elements of a home: building shell (or envelope), HVAC/mechanical systems, energy baseload, home management and photovoltaic (PV) solar. Contractors actively working in any of these are disciplines are eligible to apply. Now active in 6 states and the District of...

Duration: 00:54:08

EP13 - Contractors Benefit from Utility-based Energy Savings Programs with Joe Kuonen from CleaRESULT

Joe has worked for for CLEAResult ( ) for over 10 years. His company is a fast growing, highly focused implementer of utility-based energy savings programs. Joe discusses the ins and outs of building an energy savings program for a utility, especially those aspects that involve HVAC and building performance contractors. Joe mentions the Home Performance Coalition’s conferences as a great place to learn and network ( He also discusses...

Duration: 01:02:51

EP12 -The complex business of making better measurements easy for you - Interview with Marko Bruinsma from Testo

Today we talk with Marko Bruinsma, President of Testo, inc. Marko gives us an overview of how his background from destructive testing in labs, to work with rockets and propellants to repping instrumentation shaped his career and lead to his current leadership role with testo. We also learn about the history of testo, the worldwide scope of the organization and the breadth of product lines – some lines that all listeners may not be aware of. Some handy links from the conversation: Email...

Duration: 00:55:56

EP11 The Wild, Wild JWest- from Heavy Metal to House Wrap

Today Bill speaks with JWest, a building performance practitioner and educator. J can be reached at (his consulting business) or at (the community action agency in Chicago that he works for as Training Director.) We learn about The House at Cornell Tech Center on Roosevelt Island near NY City, which is the tallest and largest residential Passive House high-rise in the world. J discusses the HabitatX Conference as something listeners should investigate...

Duration: 00:45:52

EP10 -The most helpful guy in HVAC- Interview with Gary Reecher

Today Bill speaks with Gary Reecher, a dedicated HVAC/R technician from day one. Gary discusses how his background in the US Air Force as an Environmental Systems Technician helped shaped his interest and approach to HVAC/R. Gary is very active in the Refrigeration Service Engineers Society ( and encourages listeners to look at attending a local, regional or national meeting, subscribing to the journal or looking at the excellent training books and webinars that they produce....

Duration: 00:41:03

EP9 - Building science and practice above the Arctic Circle-Interview with Griffin Hagle

Today Bill speaks with Griffin Hagle, Weatherization Manager of the North Slope Borough in Barrow (Utqiagvik), Alaska. Griffin discusses what lead him to live and work above the arctic circle, as well as some of the challenges and rewards in doing so. In the show Griffin mentions the HabitatX Conference ( and an article on the unhealthy air in rural Alaska homes, featuring the work of Griffin’s friend and collaborator, AJ Salkoski, who works with the Alaska Native Tribal...

Duration: 00:36:41

EP8 - BPI- Building Performance through the eyes of Larry Zarker, CEO of BPI

Today’s guest is Larry Zarker, CEO of BPI, the Building Performance Institute. BPI is the nation’s premier organization for certification and standards-setting for home performance professionals. You will find them on the web at which is also the site for building performance professionals. The BPI standards for home performance work can be found at There is a separate site for homeowners at with a blog for consumers found here:...

Duration: 00:57:35

EP7 - Energy Rated Homes with Steve Baden Founder of RESNET

Today we interviewed Steve Baden the founder and present day executive director of RESNET: The Residential Energy Services Network. There are now 2 million US homes that are energy rated from Alaska to Puerto Rico. Listen to Steve discuss his background and motivations for starting RESNET, a home energy rating system that benefits consumers and builders. There is also good potential for enterprising HVAC Contractors who might add home energy rating on to their business. Links to topics...

Duration: 00:42:59

EP5 - AirQuest- Bill Spohn's take on airflow measurements, Part 2

In AirQuest part 2 Bill shares his depth of knowledge on airflow and measuring airflow including mass flow rate, CFM and much more..

Duration: 00:24:00

EP5 - AirQuest- Bill Spohn's take on airflow measurements, Part 1

In AirQuest part 1 Bill shares his depth of knowledge on airflow and measuring airflow including mass flow rate, CFM and much more..

Duration: 00:15:55

EP4- It takes more than a good HVAC system to deliver comfort

HBS SHOW NOTES ROBERT BEAN It takes more than a good HVAC system to deliver comfort. In this episode of the Building HVAC Science podcast, Bill Spohn speaks with Robert Bean about the science of true human comfort. Some of his concepts are brutally logical and may cause you to rethink your approach to selling or delivering comfort. Find out what he calls “the pet rock” of construction. Robert is a seasoned technologist, researcher and construction professional whose mantra is...

Duration: 01:01:26

EP3 - Infrared Thermometers, Proper Use

Bill covers applications for infrared thermometers, how they can be effectively used, how they work and some common mistakes to avoid.

Duration: 00:11:52

IAQ and Humidity w/ Nate Adams

Nate Adams from Energy Smart Ohio joins Bill on the podcast and talks Indoor Air Quality and Humidity Control in Homes.

Duration: 00:40:05

EP1 - Welcome to the BHS Podcast HVAC 101-BS Style

In this episode Bill introduces the podcast and what it is all about by dropping some huge knowledge bombs about building science for HVAC professionals. HVAC overview book mentioned: HVAC 1.0 Available for purchase at TruTechTools Get $5 off using coupon code “bookme” ACCA QI5: Quality HVAC Installation Specification for Residential and Commercial HVAC Applications Available free at AHRI 1260 Standard for Performance Rating...

Duration: 00:27:47