Heat Insulation: Level 8, K value 1.0W/m²K
It means on a scorching summer day, closing these windows can create over 10°C temperature difference between indoors and outdoors—like wrapping your house in a thick down jacket. When it’s 40°C outside, the room stays at 26°C with just 30 minutes of AC, cutting electricity bills by half. Comparable to high-end refrigerator insulation.
Extreme Temperature Comparisons:
Insulation Level 8 (K-value 1.0) ≈ Thermal resistance equal to 30cm aerated concrete wall triple-pane glass.
Heat Blocking:
- ✅ 60°C rooftop heat transfer in summer
- ✅ -15°C cold leakage in winter
- ❌ Extreme temperature swings (e.g., desert 50°C daily fluctuations require specialized design)
Thermal Insulation Level Life Classification:
| Level | Comparable Scenario | Thermal Transfer |
|---|---|---|
| 5 | Standard double-glazed windows | Noticeable hot/cold edges |
| 8 | Wine cellar-grade | No temperature difference felt when touching glass |
| 9 | Spacecraft shielding | Cosmic-level insulation |
Project Purchase Advice:
- Hot southern/cold northern climates: Level 8 is the gold standard for energy efficiency (reduces HVAC costs by 45% year-round).
- West-facing rooms: Combine with Low-E coated glass external shading.
(Note: K value 1.0 ≈ 1 hour. When the temperature difference is 10℃, 1㎡ of glass only transmits 1 watt of heat, which is equivalent to the heat dissipation intensity of 10 mobile phones at the same time.)
