A Guide to Choosing Energy-Efficient Windows for Modern Homes

A Guide to Choosing Energy-Efficient Windows for Modern Homes

When it comes to building or renovating a modern house, one of the most important considerations is the energy efficiency of the windows. Windows are not only a source of natural light and fresh air, but they also play a crucial role in regulating the temperature and airflow of a house. Choosing energy efficient windows can not only reduce your environmental impact but also save you a significant amount of money on your energy bills in the long run.

There are several factors to consider when selecting energy efficient windows, including the North American standards, certifications, and locations. In this article, we will provide an overview of the key considerations for choosing energy efficient windows and explore the different North American standards and certifications that you should be aware of. We will also discuss how the location of your house can impact your window selection and offer some tips on how to maximize the energy efficiency of your windows. Whether you're building a new house or renovating an existing one, this guide will help you make informed decisions about your window choices and create a comfortable and sustainable living space for years to come.

Understanding North American Standards for Energy-Efficient Windows

To understand how to choose energy-efficient windows, it's essential to understand the North American standards that govern the manufacturing and installation of energy-efficient windows. In the United States, the National Fenestration Rating Council (NFRC) provides a rating system that helps consumers compare energy-efficient windows. The ratings take into account factors such as U-factor, solar heat gain coefficient (SHGC), and air leakage.

U-factor is a measure of how well the window insulates. The lower the U-factor, the better the insulation. SHGC measures how much heat from the sun the window allows into your home. The lower the SHGC, the less heat the window allows in. Air leakage measures how much air can pass through the window. The lower the air leakage rating, the less air will pass through the window.

Understanding Certifications for Energy-Efficient Windows

In addition to North American standards, there are also several certifications that indicate a window is energy efficient. The most common certifications include Energy Star and the American Architectural Manufacturers Association (AAMA) Gold Label.

Energy Star is a program created by the US Environmental Protection Agency (EPA) that promotes energy efficiency. Windows that are Energy Star certified have been independently tested and verified to meet specific energy-efficiency standards. Energy Star windows can help you save money on your energy bills while also reducing your carbon footprint.

The AAMA Gold Label is a certification program that indicates a window has been tested to meet specific performance criteria. The Gold Label indicates that the window has been tested for air infiltration, water penetration resistance, and structural performance. AAMA Gold Label certification is a good indication that a window is high quality and energy efficient.

Considering Location for Energy-Efficient Windows

In addition to selecting energy efficient windows that meet North American standards and certifications, it is important to consider the location of your home. Windows on different sides of the home will experience different levels of sun exposure, which can impact the amount of heat gained or lost through the glass. For example, south-facing windows will receive the most direct sunlight and will therefore require different energy efficiency features than north-facing windows.

If your home is located in a hot and sunny climate, you may want to consider windows with a low solar heat gain coefficient (SHGC). This measures the amount of solar radiation that is allowed to pass through the glass. In contrast, if your home is located in a cold and windy climate, you may want to consider windows with a low U-factor. The U-factor measures how well the window insulates against heat loss.

A professional energy auditor can help determine the best energy efficiency features for your specific location and climate.

Choosing the Right Window Type

There are several types of windows to choose from when selecting energy efficient windows for modern houses. Some of the most popular types include:

Double-hung windows: These windows are a classic choice and offer good energy efficiency, as they can be fitted with double panes of glass and energy-efficient frames.

Casement windows: These windows are hinged on the side and open outwards, providing good ventilation and energy efficiency.

Sliding windows: These windows slide open horizontally, making them a great choice for areas where a lot of space is needed.

Fixed windows: These windows don't open but provide excellent insulation, making them a great choice for areas where natural light is needed but ventilation isn't.

Awning windows: These windows are hinged at the top and open outwards, providing good ventilation and energy efficiency.

Picture windows: These windows are large and fixed, providing excellent natural light and insulation.

Bi-fold doors: These doors fold up like an accordion, providing a wide opening and excellent natural light and ventilation.

When choosing energy efficient windows for modern houses, it's important to consider the type of window that will best meet the needs of the space.


Choosing energy-efficient windows is an important decision that can have a significant impact on your energy bills and your carbon footprint. By understanding North American standards, certifications, and location considerations, you can make an informed decision about which windows are right for your home. When shopping for energy-efficient windows, it's important to work with a reputable energy-efficient windows supplier that can help guide you through the process.

As an energy efficient windows supplier, we understand the importance of choosing the right windows for modern houses. Not only can energy-efficient windows save homeowners money on their utility bills, but they can also contribute to a more sustainable and environmentally-friendly home. However, with so many options available, it can be challenging to know where to start. In this article, we'll provide a comprehensive guide to choosing energy-efficient windows that meet North American Standards, certifications, and are suitable for different locations. If you have any concerns or intentions, please contact us anytime you’re free.