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Hosted by Unknown Host · 🇺🇸 US · EN-US · 145 episodes
Established thought leaders with verified media credentials.
Looking for honest stories about people, not product reviews? You're in the right place. The Human Diagnostic isn't a how-to HVAC podcast. It's what a 45-year Master Technician notices about people after 90,000 service calls across gas plants, oil rigs, hospital preservation systems, high-rises, feedlots, walk-in freezers, and residential homes all over Central Oklahoma. Hosted by Dave Hartzell, each episode tells a real story from a real service call. Sometimes he's driving to the job and predicting what he's about to walk into. Sometimes he just left and he's still working through what he saw. Either way, the story turns out to be about more than HVAC. Topics you'll hear across the season: ✅ The customer nobody wanted to take, and what changed when someone finally did ✅ Why the person researching their broken AC at midnight isn't being difficult, they're scared ✅ What 45 years of walk-ins, weddings, funerals, and broken water heaters teaches you a
Unknown Host hosts The Human Diagnostic, a business show with 145 episodes published.
A man called me out to a house south of Hennessey last March. His furnace was making a noise he did not like. He had decided, before I got there, that the control board was bad. He told me this on the phone. He told me a
There is a kind of technician I have hired three or four times in forty-five years and let go of every single one. He is not lazy. He is not stupid. The opposite. He is sharp, he reads, he has opinions, he can name every
A customer in Hennessey told me, two weeks after I installed a new heat pump in her house, that she could not believe how many heat pumps were going in around town. She said she saw them everywhere. She named six drivewa
A man in Calumet pointed at the furnace in his basement and told me they do not make them like they used to. It was forty-one years old and still running. He was certain that furnace was proof the old way was the better
A woman hired me once for a reason that had nothing to do with whether I was any good. She told me so herself, right there on the porch, before I had even opened my bag. I have seen your truck go by for years, she said.
A woman in Okarche told me on the phone that her whole house was cold. She wanted me out the same day. I asked her where in the house she had measured. She had not measured anywhere. She just knew. I drove out. I put my
A customer once told me I was the calmest man she had ever met. I thanked her. I did not tell her the truth, which was that I had been up since four that morning with a sick dog and a bad night, and the calm she was admi
Her air conditioner had been dead for two days in an Oklahoma August, and the first thing she did when I walked in was hand me lunch. Not water. Not a chair. A sandwich, made before I had my tools out of the truck. The h
A woman in Dover told me, right after I condemned her compressor, that she had known all along it was going to go out this summer. She said she had felt it. She said the unit had been telling her since spring. I asked he
A woman called me a year after a job to thank me for a furnace repair I barely remembered. It had been a long one. Her furnace quit on the coldest week of the winter, and I was at her house most of the day, pulling the b
I got a call last August from a house on the north edge of Okarche. The man had been working on his own central air for two days. He told me on the phone he was almost done. He just needed me to come verify a couple of t
I worked a neighborhood out in Edmond for most of the summer of 2024. It was a development built around 2008, sixty houses, mostly two-story, mostly young families. I had two regular customers on the block when the summe
There was a blower motor in a house north of Okarche that had been telling on itself for the better part of two years, and the woman who lived there could not hear it. I could hear it from the driveway. I want to talk ab
I want to talk about the lie everybody tells themselves, including me, and tells it again the very next day. It was June, a Tuesday, north side of Kingfisher. A man called about his upstairs not cooling. He met me in the
I want to talk about the time a customer trusted me more because I screwed up in front of her. It was a March morning out past Okarche. Gravel drive, a propane tank along the fence line, the grass still that flat brown i
There's a kind of call I've come to recognize before I even get the unit open. It's an old house with one person in it, and that person has been waiting for somebody to talk to. You learn the signs at the door. The scree
I want to talk about how a person decides whether I did a good job, because it almost never matches what actually happened in the house. There was a furnace call back in January, deep cold, the kind of morning where the
She called me back four times in one evening, and the system was already working when she made the second call. It was a furnace that wouldn't cycle right. October, the first real cold snap, the kind that comes in overni
I was at a customer's house in late spring. She was a woman in her early sixties, retired teacher, lived alone in a house she had raised her kids in. I had been to this house probably six times over the years on small th
I got a call on a Tuesday in early August. Customer in a newer build out in Piedmont, second house from the corner on a cul-de-sac. He had not had any issue with his HVAC. Nothing was broken. The system was a builder-gra
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The Human Diagnostic is hosted by Unknown Host. The show is categorised under business (careers) and has published 145 episodes.
The Human Diagnostic has published 145 episodes.
The Human Diagnostic regularly covers business, careers. It sits in the business category, with a careers focus.
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Episodes of The Human Diagnostic average 19 minutes. a focused format where a clear narrative arc and tight preparation matter most.
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