What Are Energy-Efficient Windows? Which Are the Most Efficient?

Windows feeling a little drafty? Want a little more natural light in the living room? Or are you just looking to give your home a facelift? All these goals will soon have you heading to your local window retailer, where you’ll find energy-efficient replacement windows in many different sizes and styles.

These window upgrades are far more than eco-friendly novelties. They’re flat upgrades to standard windows in more ways than one – and we’ll break down exactly what those ways are right now.

Ready? Let’s go.

What do energy-efficient windows do?

Simple: energy-efficient windows reduce thermal energy transference between the inside of your home and the outside. Put another way, they prevent heat from easily moving from one side to the other.

Why does that matter? If it’s sweltering outside and you don’t want your air conditioner to buckle under the strain of keeping your home cool in the summer, energy-efficient windows stop that hot outside air from warming your home. The same goes for winter – energy-efficient windows prevent your home’s delightful warmth from escaping outside where it doesn’t belong.

Energy-efficient windows do all that while still letting natural light into your house, giving you great views outside and looking stylish at the same time. Take a look at Alside’s Energy-Efficient Vinyl Windows to see some examples.

How do energy-efficient windows work?

There’s a good deal of science behind the physics of energy-efficient windows. In a nutshell:

• Energy-efficient windows have two or three panes of glass instead of one, leading to better insulation and heat-blocking
• Insulating gas, such as argon or krypton, floats between those glass panes
• Since warm air on one side of the window runs into physical barriers and an insulating gas, it doesn’t heat up the air on the other side

While energy-efficient windows will still heat up or cool down over time, they’re much slower to do so. All in all, they’re more effective – more efficient – than other windows without the same design features.

Double vs. triple-pane windows

As stated before, the more barriers you put between hot and cold air, the harder it is for the thermal energy to equalize between both sides. Therefore, the best energy-efficient windows use three panes of glass (with two layers of insulating gas for good measure).

But energy-efficient windows with two glass panes are still better than windows with just one. They’re more than capable of reducing heat loss or gain depending on the season, and they’ll be great improvements for your home’s temperature and your monthly utility bill.

What type of window is most energy efficient?

When a window doesn’t have to open, it turns out to be more energy efficient. It’s all because operable sashes, like the kinds you’ll find on single-hung windows, leave a small amount of space so they can move back and forth.

Fixed windows – say, picture windows or bay windows – are more energy efficient than others for this reason. That’s true even if a given window has a lot of surface area, so don’t worry about hurting your home’s thermal envelope if you install a picture window from Wincore in the dining room to boost curb appeal.

But if you do want a window that can open for fresh air, choose one with a frame made of energy-efficient materials, like vinyl. The better the material, the more insulating the window will be overall.

Which is more energy efficient: single-hung or double-hung windows?

Committed to windows you can crack for a breeze? Single- and double-hung windows will get the job done. Between both window types, single-hung windows may be a bit more energy efficient than double-hung, but there’s not a major difference.

Are energy-efficient windows tax deductible?

You bet! In fact, any qualified energy-efficient improvements to your home – like an energy-efficient entry door or a set of new triple-pane windows – made after January 1, 2023, could let you qualify for up to $3,200 in tax credits. This incentive from the federal government is available through 2032.

For Blue Ridge homeowners, that means energy-efficient windows have the potential to save more money than they cost in the long run, especially when you factor in utility bill savings. It’s why they’re some of the most popular home improvements.

The big question: are energy-efficient windows worth it?

We've already touched on monthly energy bill savings, but that's not all you can see in terms of big benefits when you install energy-efficient windows. When you sum up all their advantages, these windows are game changers for homeowners:

• They save you money. Each month, you can expect to save cash from the reduced energy you use to keep your home cool or warm. Given long enough, that means energy-efficient windows pay for their own costs.
• They reduce emissions. Want to do your part for the planet and reduce greenhouse gas emissions? Energy-efficient windows are a good way to do just that. You’ll use less energy on your HVAC system with a set of insulated windows protecting your home.
• They keep your home comfortable. Say goodbye to sweating indoors or needing to grab yet another blanket to warm up on the couch. Energy-efficient windows are especially good for keeping normally drafty rooms nice and comfortable.
• They look great. Since they’re available in practically every imaginable style and shape, energy-efficient windows seamlessly blend with your home’s current look and curb appeal. New windows can even enhance that appeal, enticing prospective buyers to offer more cash for your property should you ever decide to move.
• They even protect your furniture. The best energy-efficient windows have glass coated with UV-resistant layers. That UV light won’t be as strong when it hits your furniture or carpet, preventing the fading that tends to come along with having a couch or chair right in front of a sunny window.

So, are energy-efficient windows worth it? By all accounts: yes!

Find new energy-efficient windows today

Energy-efficient windows are fantastic upgrades to any Blue Ridge home. Whether you’re looking to save money or raise your home’s resale value, the right new windows will prove to be excellent investments in a matter of months.

That’s why you should stop by Window World of the Blue Ridge today. Our knowledgeable, friendly experts can help you find the best windows for your home based on its architecture, your budget, and your personal needs. Then, we’ll find an installation date and time that works for your schedule. Request a quote today – we can’t wait to get started!