Every summer, many families feel the pinch when they receive their electricity bills. Even if you are already used to limiting your air conditioning usage, the numbers on the meter still seem to rise rapidly. In fact, aside from the extreme heat, the poor thermal insulation of your home’s windows is often the “hidden loophole” draining your electricity budget.
The poor insulation of ordinary glass allows cold air to escape quickly and hot air to enter easily, forcing the air conditioner to run continuously for long periods. This is the root cause of high energy consumption.
A Thermal Barrier Backed by Data
The key to lowering your electricity bills lies in upgrading the thermal insulation level of your windows. Currently, the mainstream double-silver Low-E insulating glass with a 12A spacer filled with argon gas typically has a heat transfer coefficient (U-value) of 1.4 W/㎡·K.
However, SuperVIG® vacuum glass utilizes a vacuum layer to effectively block heat conduction, drastically reducing the heat transfer coefficient to 0.45 W/㎡·K. This means it adds a highly efficient thermal barrier to your home, significantly reducing the infiltration of outdoor heat.
Field Test: How Much Can You Save in a Year?
Under an indoor-outdoor temperature difference of 20°C, ordinary insulating glass transfers 28W of heat per square meter per hour into the room, whereas SuperVIG® vacuum glass transfers only 9W.
Taking a 100㎡ apartment as an example (with a 30% window-to-wall ratio and 10 hours of daily AC use):
- Using ordinary insulating glass: The cooling power consumption over 180 days in summer reaches 504,000W, costing approximately 302.4 RMB.
- Using SuperVIG® vacuum glass: Under the same conditions, the power consumption is only 162,000W, costing approximately 97.2 RMB.
On cooling electricity bills alone, you can save 205.2 RMB every year.
A Long-Term Investment for Your Home
Upgrading to high-performance vacuum glass is a one-time investment that brings long-term savings. It not only reduces electricity bills but also lowers the failure rate of your air conditioner.
If you are looking to reduce your household’s daily expenses, feel free to contact Weiaiji to get a detailed quotation for SuperVIG® vacuum glass.



