# Why Profit on a $40 Cabin Air Filter Can Beat a $600 Water Pump Job: Discover the Metric Your Shop Isn't Tracking [E212]

Page: https://stenobird.com/podcast/business-by-the-numbers-5045738/why-profit-on-a-40-cabin-air-filter-can-beat-a-600-water-pump-job-discover-the-metric-your-shop-isn-t-tracking-e212
Text version: https://stenobird.com/podcast/business-by-the-numbers-5045738/why-profit-on-a-40-cabin-air-filter-can-beat-a-600-water-pump-job-discover-the-metric-your-shop-isn-t-tracking-e212.md
Podcast: [Business By The Numbers](https://stenobird.com/podcast/business-by-the-numbers-5045738)
Published: 2026-03-05T04:15:00+00:00
Episode link: https://automotiverepairpodcastnetwork.com/why-profit-on-a-40-cabin-air-filter-can-beat-a-600-water-pump-job-discover-the-metric-your-shop-isnt-tracking-e213
Audio file: https://episodes.captivate.fm/episode/fc2e3d1e-4997-4f4a-99f3-d990a50b585c.mp3
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JSON: https://stenobird.com/v1/public/podcasts/business-by-the-numbers-5045738/episodes/why-profit-on-a-40-cabin-air-filter-can-beat-a-600-water-pump-job-discover-the-metric-your-shop-isn-t-tracking-e212
Duration seconds: 1399

## Resource

Thanks to our partners Promotive and Wicked File Would you swap out wiper blades for $500? Probably yes. Would you replace an entire engine for $500? Absolutely not. But here’s the real question: what if the math behind why you said yes to one and no to the other is the same math that’s silently costing your shop thousands of dollars every month? I In this episode, Hunt Demarest breaks down one of the most powerful and most overlooked metrics in the auto repair business: gross profit dollars per hour sold. Most shop owners track sales, gross profit, and hours. But very few ask the one question that ties them all together: how fast are you making that money? Inspired by the late Aaron Stokes of Shop Fix Academy, Hunt makes the case that the speed of your profitability, not just the size of it, is what separates thriving shops from ones that are always busy but never ahead. Hunt walks through real examples that make this impossible to ignore — including why tire shops with terrible margins can still be wildly profitable, and how a $40 cabin air filter can outperform a $600 water pump job. Whether you're setting targets, pricing jobs, or wondering why a record sales month still left you short, this is the framework that explains it. And if you're already using Tekmetric or Shop-Ware, this metric is likely already on your end-of-day report; it's time to start using it. What You’ll Learn ( 00:10) It's not how much you make, it's how fast you make it (02:14) A tribute to the late Aaron Stokes of Shop Fix Academy (03:05) Understanding gross profit dollars per hour (03:45) Hours open vs. hours sold — the two versions of GP$/hour explained (06:00) The importance of speed in profitability (06:45) Why tire shops with terrible margins can still be wildly profitable (08:50) Setting…

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