11 Things HVAC Techs Won't Tell You About Hydrogen Peroxide (#8 Saves $900)

That thousand-dollar air purifier your HVAC tech wants to bolt into your ductwork? It works by making hydrogen peroxide, the very same thing that's in the dollar bottle under your sink. Once you know that, you start to see just how much of your HVAC bill that little brown bottle already covers. I'll walk you through eleven of them, gently and plainly. How to clear the AC drain line that shuts your whole system down in July, why a dirty coil is quietly padding your electric bill every month, the honest truth about that pricey in-duct purifier, dirty sock syndrome, the black spots on your vents that get turned into a nine-hundred-dollar upsell, humidifiers, and the one safety rule you must never break. All of it with a standard 3% bottle that costs about a dollar. There's a new one of these every week. Come subscribe and sit with me a while:    / @betty_larsen   A few gentle reminders before you go: always cut the power at the breaker or the outdoor disconnect before you go near any coil or unit, use only the regular 3% peroxide (never the food-grade 35%), and never mix peroxide with vinegar or with bleach. These tips are for routine upkeep. For refrigerant work, anything electrical, or anything you're unsure of, please call a licensed HVAC professional. P.S. If you'd like every one of these rated honestly, Verified, Partial, or Myth, I gathered it all into my hydrogen peroxide books. You'll find them on my channel page,.