Podcast: How to Built Doc Air on Science Over Sales in the Sick Building Industry
One of Barry Westbrook’s neighbors called him about a problem with her home. Several other companies had already been out to look at it. By the time Barry arrived, those contractors had her convinced the house was in serious trouble. They were ready to tear into walls.
Barry looked at the situation with the diagnostic eye of a certified industrial hygienist and professional engineer. His assessment: she didn’t really have a problem. The issues were minor. The other contractors, trained more in sales than in science, had found enough to alarmed her into spending money she didn’t need to spend.
That story captures the premise of Doc Air in a single scene. On a recent episode of Everyday Excellence, Todd Baldwin sat down with Barry Westbrook, founder of Doc Air in middle Tennessee, for a conversation covering 20 years of diagnosing sick buildings, why most homeowners do not understand where their indoor air actually comes from, and what it means to run a building science company where the core value is science over sales.
What Is a Sick Building and Why It Matters
Barry’s shorthand for what Doc Air does is precise: we fix sick buildings. That phrase covers a range of problems that most homeowners do not know to look for and cannot always see.
The starting point for most building health issues is air quality, and the most counterintuitive thing Barry shares with homeowners is where their indoor air is actually coming from. In the majority of residential buildings, there is no true ventilation system. The HVAC refers to heating, ventilation, and air conditioning, but in practice most residential systems provide only the H and the AC. The V is largely absent. The fresh air that comes into most homes leaks in through the building envelope, and one of the primary sources of that air is the crawl space.
Most homeowners have no idea their crawl space is a significant contributor to the air they breathe inside their house. And if that crawl space has moisture issues, mold, or other contaminants, that air quality problem travels directly into the living space above it. The federal government estimates that roughly 30 percent of residential ductwork is leaky, which means the system distributing that air throughout the home is compromised at the delivery point as well.
Barry summarizes the challenge clearly: “Radon is invisible, mold spores are invisible, heat and cold, air pressure is invisible. It’s difficult to explain things that people can’t see.” A water leak is easy. You can see it, point to it, call a plumber. An air leak, a radon intrusion, a ventilation imbalance: these require diagnostics, equipment, and building science expertise to find.
Building a Business on a Problem People Can’t See
Barry started Doc Air in 2002 with one other person, coming from a consulting background in environmental health and safety. The indoor air quality space was emerging at the time, driven significantly by growing public awareness of mold. As a certified industrial hygienist, he was positioned to work at the intersection of science and practical building problems, and that intersection has defined the company for more than two decades.
The business is a hybrid. There is significant applied science work, technical assessments, diagnostic reports, and expert consultation. And there is also hard physical labor: working in crawl spaces, evaluating HVAC systems, managing stormwater, installing retaining walls, and carrying out the remediation work that follows the diagnostic phase. Barry describes it as following the customer’s needs wherever they lead, which has taken the company into areas ranging from geothermal heating and cooling to radon mitigation to building envelope air sealing.
The early lesson Barry reflects on most is the importance of financial reserves and the right personnel from the start. In a technical service business where the quality of the diagnosis depends directly on the expertise of the person conducting it, finding people with genuine building science knowledge is a persistent challenge. Barry describes the diagnostic work as resembling crime scene investigation: taking all available information, applying scientific knowledge, and arriving at a conclusion the client can act on.
What’s Working Now: Realtor Partnerships, the Diagnostic Model, and Organic Search
Doc Air’s primary marketing channel is a realtor education program. Barry runs a three-hour continuing education seminar approved for CE credit, aimed at real estate professionals who deal regularly with building inspection issues in the course of transactions. The seminar covers the things that can make or break a real estate deal from a building science perspective: what the inspection report findings actually mean, when something is a serious problem and when it is not, and what buyers and sellers should understand about building health before they close.
The real estate transaction is a natural lead source for Doc Air’s services. When an inspector identifies a potential issue during a sale, or when a buyer or seller needs an independent expert to evaluate what the inspection found, Doc Air gets called. The realtor relationship creates the trust that precedes that referral. The seminar positions Barry and his team as the subject matter experts before the transaction, which means the referral is already warm when the client calls.
Organic web search rounds out the lead mix. Homeowners experiencing comfort problems, odors, allergy symptoms, or moisture issues find Doc Air through searches related to their specific problem. The website serves as the primary touchpoint for those inbound leads, and Barry is candid about the gap between where the site is and where it could be.
When Todd asked about digital marketing, Barry gave a direct answer: “I would give us probably a C minus.” The problem is not lack of awareness. It is capacity. As a small technical company, the day-to-day work pulls focus away from the strategic marketing investment. Barry knows what the opportunity looks like. He is planning a content series in a MythBusters format: the things homeowners did not know about their buildings, the questions they wanted answered but did not know to ask.
The Lesson: Science Before Sales, and the Submarine Test
The industry challenge Barry describes most pointedly is the growing presence of private equity-backed service companies that operate on a sales-first model. These rollups are consolidating local service businesses and retraining their workforces around revenue goals rather than technical accuracy. Barry sees the result in the field: contractors recommending work that is not necessary, homeowners confused by conflicting assessments, and a general erosion of trust in the building services category.
Doc Air’s response is its core value: science over sales. Barry frames it with a comparison to a family physician. A trusted doctor is well compensated, but the relationship is built on the expectation that the recommendation will be what the patient actually needs, not what generates the highest billing. “What would I do if it were mine? That’s the question he brings to every client engagement, and it is the question that produces the honest answer, even when that answer is that there is no significant problem.
The ventilation analogy Barry uses to explain building science is memorable. Most people believe buildings can be built too tight. Barry challenges that framing directly: you have never heard someone say a submarine is too tight, or a boat is too tight, or an aquarium is too tight. The engineering principle is the same. A building can and should be sealed tightly. What it also must have is a deliberate, reliable ventilation system that controls the quality of the air coming in. The V in HVAC has been missing from most residential construction for decades, and getting that message into common knowledge is, as Barry puts it, the hardest part of the job.
At Everyday Media Group, Todd Baldwin and the team work with building science and home service businesses to build the organic content strategy that reaches homeowners before they know they have a problem and before the sales-first competitors get to them first. The educational content Barry is planning, demystifying building health in a MythBusters format, is exactly the kind of material that ranks well in organic search and builds the credibility that converts.
Key Takeaways
- “Science over Sales.” Doc Air’s core value describes the only sustainable model for a technical service business. Recommending work the client does not need might produce short-term revenue, but it destroys the trust that drives referrals. A business built on honest diagnosis earns the kind of loyalty that no sales campaign can replicate.
- “There is no V in HVAC.” Most residential buildings do not have a true ventilation system. The fresh air entering the average home comes from whatever leaks through the building envelope, including through the crawl space. Homeowners who understand this will understand why a building health company like Doc Air exists, and why a full building audit reveals more than any single-system contractor ever could.
- Invisible problems require visible education. Radon, mold spores, air pressure, air leaks: none of these are problems homeowners can point to. The companies that win in the building science space will be the ones that invest in the educational content that explains invisible problems in plain language before the first call is ever made. The MythBusters format Barry is planning is a direct path to exactly that audience.
About Barry Westbrook
Barry Westbrook is the founder and owner of Doc Air, a building diagnostics and indoor air quality company serving the middle Tennessee and Nashville area. He is a certified industrial hygienist and professional engineer with more than 20 years of experience diagnosing and remediating sick buildings. Doc Air’s services span home energy assessments, indoor air quality testing, mold and radon evaluation, crawl space remediation, and building envelope diagnostics, as well as a realtor continuing education program covering building health in the real estate transaction context.
Reach Barry at docair.com or by email at [email protected].
Does Your Building Have an Air Quality Problem You Can’t See?
Most building health problems are invisible. You feel them before you can name them. Doc Air brings the diagnostic expertise to find what other contractors cannot, and the science-first philosophy to recommend only what actually needs to be done. Everyday Media Group helps building science companies build the content and SEO infrastructure that reaches homeowners at the moment they start searching for answers. Schedule a conversation with Todd Baldwin and the team.
