When considering replacement windows, ensuring energy efficiency is key. Low-E glass is touted for its savings potential on long-term energy costs. The "glass demo" is a common tool used by window companies to showcase these benefits, yet it can be misleading.
Understanding Low-E Glass
Low-E glass features a special coating that blocks UV radiation, reducing heat transfer. Four main manufacturers in the U.S. produce these coatings, each offering similar performance.
The Essence of a Glass Demo
During a glass demo, a heat lamp is directed at various glass samples: single-pane, insulated, competitor's low-E, and the presenter's low-E glass. This demonstration measures how effectively each sample blocks heat transmission.
Why It Can Mislead
While most low-E glass performs similarly, darker glass blocks more heat and light. In demos, presenters often use darker glass, enhancing perceived effectiveness but potentially compromising visibility in real-world applications.To explore the many advantages of upgrading your home's windows, check out our blog on unlocking the benefits of window replacement with Sane Windows!
Optimizing Low-E Glass
Low-E glass primarily blocks solar radiation, ideal for reducing cooling costs in warmer climates. Choose coatings with a lower Solar Heat Gain Coefficient (SHGC) to maximize heat blockage.
Balancing Seasons
In cooler climates, low-E coatings may hinder passive solar heating in winter. Balancing low-E coatings and insulated glass ensures efficiency year-round.
Avoiding the Glass Demo
At Sane Windows, we prioritize transparency. Skip the high-pressure sales tactics with our online or phone quotes—no misleading presentations, just quality products and lifetime warranty support.
