Why Tight Homes Need Fresh Air 💨 | Blower Door Test Explained! We’re breaking down what happens when you run a blower door test on homes insulated with foam, fiberglass, or cellulose and why it’s not just about sealing your house tight. When a home is insulated correctly, it becomes so airtight that fresh air can’t naturally circulate which is great for energy savings, but tough on indoor air quality. That’s where mechanical ventilation systems come in. Adding a fresh air intake to your HVAC ke

680K views · 17K reactions | Which Test for Which Problem? Health Issues & Their Diagnosis Explained #HealthTestsExplained | JoT Tv Australia | Facebook

For nearly a century, ten inkblots have been used as an almost mystical personality test. The mysterious images were said to draw out the workings of a person’s mind. But what can inkblots really tell us, and how does this test work? | TED-Ed

547K views · 8.2K reactions | Aurora goes in for Autism testing and we get the results right away. She also gets tested for several other things. These are her official results. | Crazy Pieces | Facebook