Types of Windows

A smarter energy-efficient home ensures more comfort, a healthier indoor environment, lower costs to operate and reduces carbon emission. Window consideration is one among the basics. Energy efficient windows will make your home more comfortable, dramatically reduce your energy costs and help to create a brighter, cleaner, healthier environment. However, ordinary windows can also represent a major source of unwanted heat gain in summer and significant heat loss in winter. Thus, appropriate window selection is a MUST!

There are several types of window designs, with different degrees of energy efficiency, and different ventilation and lighting possibilities. They include namely – –

Fixed-pane windows

Fixed-pane windows are stationary windows. They don’t open, and can be customized and designed to match other types of windows, namely casement and double-hung windows.

Fixed-pane windows tend to be the most energy-efficient windows, but since they don’t open, they do not allow ventilation – which is a big disadvantage in many cases. They are also the most inexpensive type of windows.

Double-hung and gliding windows and sliding windows


Double-hung and gliding  windows and Sliding windows

Variations of the same frame design: a design that does not seal as well as other designs.


Casement windows, hopper windows and awning windows


Casement windows, hopper windows  and awning windows

(They have a crank out, and differ on where the hinges are located: at the side, at the bottom or at the top of the window).

Casement, hopper and awning windows are variations of the same frame design, based on hinges at the side, bottom or top of the window.

Casement, hopper and awning windows can be excellent windows, with a higher energy-efficiency than that of gliding and double-hung windows. Besides, they also allow good ventilation possibilities.

Bow or bay windows

Bow or bay windows are  window combinations that project outward…  They allow multiple views and are excellent for lighting and ventilation. They allow a sense of spaciousness, and they are particularly used in kitchens, though not only. Their design can reduce their structural strength.

When selecting windows for your home, it’s also important to consider what type of glazing or glass you should use to improve your home’s energy efficiency. Based on various window design factors—such as window orientation, your climate, your building design, etc.—you may even want different types of glazing for different windows throughout your home.


For more information on how  TYPES OF WINDOW will affect the energy efficiency of your house, or you would like to know more about the service Sustainability WA provide including an Energy Rating or Energy Efficiency certification for your project please contact us here or phone 08 9537 2000

Other terms sometimes used to describe an energy rating includes:  Energy Star, Energy Audit, Energy Ratings, Energy Efficiency Certificate, Energy Assessment, HERS, BER or EPC.

Sustainability WA can help you with them all!

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