Hi, it’s Bill from Window World! Today, we’re going to show you a mechanism to show you the benefits of low E glass or low Emissivity body glass. So in this box, we have four different types of glass: single pane glass, double pane insulated glass, and two different types of low E or low Emissivity glass. We’re going to use a radiometer, which measures radiant heat, and a 250-watt heat lamp. The first glass we are demonstrating is low E glass with argon gas. First, I’m going to turn this 250-watt heat lamp on and put the radiometer right up to the glass.

As you can see, the radiometer is actually moving backward. If there were radiant heat coming through the glass, it would make that radiometer spin. Right now, it’s just barely moving. We’re going to now try the clear insulated glass, not even single pane, and roll the radiometer up to the glass and watch it start to spin. So what that’s showing you is radiant heat is coming through the glass. Glass is a conductor of heat and cold, which comes into your home. 

And now we’re going to go back to the low E glass. I’m going to stop the radiometer and then put it back up to the glass, and now it’s actually rolling backward. Of course, you can’t feel the heat, but the radiometer shows you that the low E glass is working. Next, let’s go to single pane glass. 

Watch the single pane glass. You can probably feel the heat coming through that camera, can’t you? I sure can. So that’s what low Emissivity glass does for you, and it will change everything in your home. It will lower your operating costs by at least 30 percent. It will keep you warmer in winter, cooler in the summer, and lower your overall operating costs. Low E glass is a no brainer. If you are looking for energy efficient, affordable windows give us a call today