Table of Contents

Introduction

Many people are interested in making their homes more energy-efficient but may not know where to start. One of the simplest and most effective ways to save energy is by installing Low-E glass windows. Low-E glazing is a coating applied to window glass that helps regulate the temperature in your home year-round. In the summer, Low-E glass reflects heat away from your home, keeping it cooler. In the winter, Low-E glass helps retain heat in your home, making it warmer.

Let’s cover the basics of this and how you can benefit from it.

What is Low-E Glass and What Does It Do?

Low-E stands for low-emissivity. Low-E is a type of energy-efficient glass coated with an extremely thin layer of metallic oxide. This coating helps reflect heat into your home in the winter and keeps heat out in the summer. In other words, it helps to regulate the temperature in your home year-round, resulting in your HVAC unit not having to work as hard and making it more energy-efficient.

You may have seen this glazing before just by looking at residential windows. The coating is almost invisible to the naked eye, but if you look closely, you can see a slight tint. Sometimes the tint appears reflective, which can have some problems, but that’s the key to their energy efficiency.

How is Low-E Glass Different from Other Types of Glass?

The most significant difference is in the coating. Most other types of glass do not have a Low-E layer. They may have different tinting for other purposes, but the Low-E coating has one specific purpose: to keep a constant temperature inside your home.

There are other types of energy-efficient glass, such as argon-filled or krypton-filled, but it’s worth noting that you can get argon-filled double-pane windows with a Low-E coating for even more energy efficiency.

Low-E on All Types of Windows

One of the best things about Low-E glazing is that you can get it on all types of windows. Whether you have double-hung, casement, or even skylights, there is a Low-E option. And because the coating is so thin, it does not affect the operation of the window in any way.

Don’t forget about the doors! Whether a sliding glass door or a French door, there is a Low-E option for you as well.

Who Should Buy Low-E Glass Windows?

Generally, homeowners in all climate zones can benefit from Low-E glass windows. The Department of Energy has a recommended list of U-factors for different types of windows in different climate zones. The lower the U-factor is, the more energy-efficient the window is.

However, if you live in a climate zone with more extreme temperatures, you will see more of a difference in your energy bill. For example, those that live in south Texas around San Antonio or Corpus Christi will see a more significant benefit than those that live in the northern US.

How Much Do Low-E Glass Windows Cost?

Many people are worried about the cost of Low-E glass windows, but the truth is that they are not much more expensive than regular windows. You may even find that some brands are cheaper. The price difference is usually around $20-30 per window.

When you have a home with 20 windows, that is an extra $400-$600. But when you factor in the energy savings, you will quickly make up the difference. For example, if you live in south Texas and your energy bill is $200 per month, you will save up to $30 per month with Low-E glass windows. That is a saving of $360 per year! This glazing pays for itself in no time.

Remember that countless factors come into play when calculating your energy savings. This glazing is just one of the many factors, so your mileage may vary.

Energy Efficiency and Lower Energy Bills

So, is Low-E glass worth it? The answer is yes! Low-E glass is worth the investment, especially if you live in an area with extreme temperatures. Not only will it help to keep your home more comfortable, but it will also save you money on your energy bills. Low-E glass is a simple and energy-efficient upgrade when buying windows for your home.

It’s a one-time investment that will continue to pay dividends for years.

Upgrade Your Home’s Windows

Low-E glass is one of the simplest and most effective ways to improve your home’s energy efficiency. The coating is nearly invisible, but it makes a big difference in keeping your home at a constant temperature. Low-E glass is available on all types of windows and is not much more expensive than regular windows.

Low-E glass is definitely worth the investment if you live in an area with extreme temperatures. Not only will it help to keep your home more comfortable, but it will also save you money on your energy bills. So if you’re in the market for new windows, be sure to ask for Low-E glass. Your home will thank you for it!

Comparison Between Low-E 240 and Low-E 366

FAQ

Q: What is Low-E glass?
A: Low-E glass stands for low-emissivity glass, which is coated with a thin layer of metallic oxide to improve energy efficiency by reflecting heat.

Q: How does Low-E glass work?
A: It reflects heat into your home during winter and keeps heat out during summer, helping to maintain a consistent temperature.

Q: Can I install Low-E glass on any type of window?
A: Yes, Low-E glass is available for all types of windows, including double-hung, casement, and skylights, as well as doors.

Q: How much more expensive is Low-E glass compared to regular glass?
A: Low-E glass typically costs around $20-30 more per window, but the energy savings can quickly offset this initial cost.

Q: Who benefits the most from Low-E glass windows?
A: Homeowners in extreme temperature zones, such as south Texas, will see the most significant energy savings.

Q: How long does it take for Low-E glass to pay for itself?
A: Depending on your energy usage and climate, Low-E glass can pay for itself in a few years due to the energy savings.