The $1200 HVAC lightbulb illusion

Cool Talk with Hartzell's | Your HVAC Questions, Answered! · Jul 5, 2026 · 23m · transcript

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HOST A: Customer in Edmond calls. Different company quoted her a system replacement, 14000 dollars. The line item that bothered her was a 1200 dollar UV light add-on. The salesman told her it kills mold, bacteria, viruses, and quote, 99.9 percent of airborne contaminants. HOST B: Some of that is true. Most of it is in a specific context the salesman did not mention.

I'm Dave Hartzell at Hartzell's Heat & Air in Kingfisher, Oklahoma. 45 years in the trade, Master HVAC license. On Cool Talk I cover the stuff central Oklahoma homeowners actually need to know about heat, air, and…