Replace Windows, Save on Energy Costs?

You’ve heard it before: replacing drafty old windows with energy-efficient windows will save you money. But how much can you really save, and is it worth the investment?

Glass Express dug into the data and details so you don’t have to. If you’re looking to buy energy efficient windows, here’s everything you need to know before making the leap.

The Real Savings Behind Energy-Efficient Windows

The short answer is yes. Energy efficient window replacements can cut your utility bills. According to the U.S. Department of Energy, heat gain and loss through windows account for 25%–30% of residential heating and cooling energy use. Replacing single-pane windows with Energy Star® certified models can save homeowners between $101 and $583 annually, depending on your location and home size.

Combine that with federal incentives, like the tax credit for energy efficient windows (up to $600 in 2025 through the IRS’s Energy Efficient Home Improvement Credit), and the financial case gets stronger.

What Are Energy Efficient Windows?

Energy-efficient windows for homes are designed to reduce heat transfer, keeping your home warmer in winter and cooler in summer. They do this with specialized materials and construction methods. The result? Lower energy bills, better comfort, and a reduced carbon footprint.

Here’s what sets the best energy efficient windows apart:

Double-Pane vs. Triple-Pane

Double-pane windows use two layers of glass with an insulating air or gas layer in between.
Triple-pane windows add an extra layer for even better insulation—ideal for colder climates.

Low-E Glass Coatings

Low-emissivity (Low-E) coatings reflect infrared light, keeping heat inside in winter and outside in summer. They also block UV rays that can fade furniture and flooring.

Gas-Filled Windows

Windows filled with argon or krypton gas offer better insulation than air. These inert gases are denser, reducing heat transfer.

Frame Material Matters

Vinyl frames are affordable, low maintenance, and offer good insulation.
Fiberglass frames are strong, durable, and energy-efficient.
Wood provides natural insulation and aesthetic appeal but needs more upkeep.

Why It’s Smart to Invest Now

The longer you wait to upgrade, the more energy (and money) you waste. Plus, the energy efficient windows tax credit helps offset upfront costs.

If you’re asking, “What are the most energy efficient windows?”—Glass Express can help. We’ll guide you to the best energy efficient window option for your climate, budget, and style.

Make the Smart Move with Glass Express

Ready to cut your energy bills and boost comfort year-round? We offer top-rated energy efficient window replacement services, helping you choose windows that make sense for your home and your wallet.

Whether you’re retrofitting an older home or building new, Glass Express is your go-to source for energy efficiency windows that perform. Contact us today for a free quote!

FAQs About Energy-Efficient Windows

What are energy efficient windows?

Energy-efficient windows use advanced technology like Low-E coatings, multiple panes, and gas fills to reduce heat transfer and improve insulation, saving energy and money.

Are energy efficient windows tax deductible?

Yes. As of 2025, you can receive a tax credit for energy efficient windows of up to $600 through the Energy Efficient Home Improvement Credit. Keep receipts and ensure the windows are Energy Star certified.

What are the most energy efficient windows available?

Triple-pane windows with Low-E coatings, krypton gas fills, and fiberglass frames are generally considered the most energy efficient windows on the market today.

How to make windows more energy efficient without replacing them?

Add weatherstripping, caulk gaps, use window film, or install thermal curtains. While these upgrades help, an energy efficient replacement window offers the best long-term savings.

Where can I buy energy efficient windows near me?

Glass Express offers a wide range of energy efficiency window options. Our local experts are ready to help you choose and install the right energy efficient window. Contact us today for a free quote.