Are Slider Windows Energy Efficient?

If you’re looking to boost your home comfort with window replacement, energy efficiency is no doubt top of mind. There are plenty of options to choose from: casement windows, awnings, sliders, and more besides. Many homeowners who are looking for a cost-effective, low-maintenance option choose sliding windows for their project, but how do they stack up in terms of energy efficiency compared to other window types? Let’s find out!

What Makes a Window Energy Efficient?

Before diving into how slider windows perform, it’s important to understand what makes any window energy efficient in the first place. Several factors contribute to a window’s ability to keep your home comfortable and reduce energy bills. These include the type of glass, the frame material, the window's insulation properties, and the quality of its seal.

A highly energy-efficient window will help to minimize heat transfer between the inside and outside of your home, keeping your home warmer in winter and cooler in summer. Look for features such as double or triple-pane glass, low emissivity (LoE) coatings, and gas fills like argon for enhanced thermal insulation.

How Energy Efficient are Slider Windows?

Slider windows are known for their simple design, featuring two sashes, one of which slides horizontally or vertically. While this sleek look can complement many styles of homes, it may not always be the first choice for energy efficiency. Here's why:

Inherent Design Features

The sliding mechanism of these windows can make it difficult to achieve the same level of tightness as casement windows, which have a cranking action that seals them tightly against the frame. However, advancements in slider window design, including stronger, tighter seals, are improving their energy efficiency.

Air Leakage Concerns

One of the main drawbacks of slider windows when it comes to energy efficiency is the potential for air leakage. Since these windows have moving parts, the seals around the sashes can wear over time, causing drafts and reduced energy performance. However, newer models with advanced weatherstripping can mitigate this issue considerably.

Frame and Glass Options

The frame material and the glass used in slider windows can significantly impact their energy performance. Vinyl frames are more efficient than outdated aluminum options, as they have better insulating properties. Additionally, opting for double or triple-pane glass with LoE coatings can boost a slider window's energy efficiency, helping to prevent heat loss and gain.

Benefits of Slider Windows Beyond Energy Efficiency

While slider windows may not always outperform other window types like casements in terms of energy efficiency, they come with a host of other benefits that can make them the right choice for many homeowners:

Low Maintenance

Slider windows have fewer moving parts than other window types, such as awning or casement windows. This means there’s less chance for failure, and they are generally easier to maintain and clean.

Space-Saving Design

Because slider windows open horizontally or vertically, they don’t protrude outward like casement or awning windows. This makes them ideal for areas with limited space, such as walkways, patios, or areas near shrubs or landscaping.

Affordable Option

Slider windows are often more affordable than some of the other more complex window types, making them a great option for homeowners who want to boost their home’s energy efficiency on a budget.

Centra’s Triple Pane Sliding Windows

Centra has recently introduced a new product: our triple pane sliding windows! This provides homeowners with a highly cost-effective option that still achieves great levels of energy efficiency, making them perfect for those colder winters and hot summers.

Other Ways to Improve the Energy Efficiency of Slider Windows

If you’re considering slider windows for your window replacement project, there are steps you can take to maximize their energy efficiency. Among the most important is choosing the right frame material. It’s no secret that vinyl window frames provide better insulation than aluminum, and they’re considerably better value than fibreglass. If you're choosing new slider windows, be sure to make vinyl your first choice. Proper installation is also imperative to ensure the windows are as efficient as possible. Centra uses our own team of in-house installers who are paid by the hour instead of by the job, ensuring your slider window replacement is done right.

While sliding windows may not always be the top performer in energy efficiency compared to some other window types, they can still be a solid option for homeowners seeking a low-maintenance, cost-effective window replacement solution. By choosing high-quality materials, upgrading the glass, opting for triple-pane, and properly maintaining your windows, you can enjoy the benefits of slider windows without sacrificing too much on energy efficiency.

In the end, the best window choice for your home will depend on your priorities – whether it’s energy efficiency, budget, maintenance, or style. Make sure to consult with a professional to assess your needs and choose the right window for your home’s unique requirements – reach out today!

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Have an upcoming window and door project? Reach out to the experts for a free consultation! If you have any questions regarding this topic or anything else to do with windows, contact a local Centra Employee Owner at 1-888-534-3333 or drop us an email at info@centra.ca. Follow us on Facebook and Instagram to stay up to date, and test your window knowledge on LinkedIn.