In this episode of the Build Show, Eric compares two gas-leak detectors he keeps on his service van: the budget-friendly TopTes pen-style detector and the more advanced Seitron combustible gas detector. Eric demonstrates how the compact TopTes tool is ideal for quick checks when someone reports a gas smell, showing how it reacts as he approaches a controlled leak. He then walks through the features of the professional-grade Seitron unit, highlighting its heated-diode sensitivity, parts-per-million readout, audible alarms, and graphical display that help accurately pinpoint leaks. Eric explains when each tool shines, what they cost, and why every contractor working around gas appliances should carry dependable leak-detection equipment to stay safe on the job.

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