Energy Efficient Windows Experts
Energy Efficient Windows Installation & Replacement Experts
Apollo Windows provides energy efficient window replacement and installation services in Calgary. All our windows and doors are custom-manufactured in Calgary and engineered to outperform Alberta’s most extreme climate conditions.

Energy Efficient Windows
Built for Calgary’s Climate
Energy efficient windows are no longer optional for Calgary homeowners — they are one of the most impactful and highest-return upgrades you can make to your home. Older or failing windows account for up to 35% of your home’s total heat loss. Upgrading to high-performance, Energy Star certified windows eliminates drafts, reduces monthly energy costs, improves indoor comfort, and meaningfully increases your home’s resale value.
At Apollo Windows, every energy efficient window is custom-manufactured right here in Calgary. We engineer with multi-chambered frames, Low-E glass coatings, argon gas fills, and warm-edge spacers to meet and exceed Energy Star standards for Alberta’s most demanding climate zone.
Reduce home heat loss by up to 35%
Achieve a U-Factor of 1.22 W/m²·K or lower
Energy Rating of 34 or higher as standard
Low maintenance windows built to last decades
Energy Efficient Windows Calgary
What Makes Our Calgary Energy
Efficient Windows Different
Our energy efficient windows are not just built to meet the minimum standard; they are engineered to exceed it. Here is the technology behind every custom-manufactured energy efficient window we produce for Calgary homes.

Our Calgary hybrid window specialists will visit your home, take precise measurements, and provide a comprehensive written quote that is completely free and with no obligation.
Energy Efficient Windows Solution
Energy Efficient Windows for
Every Calgary Home
Every material we use is engineered to deliver ENERGY STAR certified thermal performance. We custom-manufacture energy efficient windows in a range of materials, built specifically to handle Alberta’s extreme climate conditions.

Our vinyl energy efficient windows combine multi-chambered PVC frames, Low-E glass coatings, and argon gas fills to deliver exceptional thermal insulation against Calgary’s -30°C winters. It’s a low maintenance, cost-effective, and Energy Star certified upgrade for any Calgary home.

Our uPVC energy efficient windows are manufactured from 100% lead-free unplasticized polyvinyl chloride. They deliver superior thermal insulation, moisture resistance, and long-term durability that meet and exceed Energy Star standards for Alberta’s most demanding climate zones.

Our hybrid energy efficient windows combine a weather-resistant aluminium exterior with a thermally efficient uPVC interior. These windows deliver the structural strength Calgary’s climate demands alongside the energy performance your home requires, with proper thermal breaks built into every unit.

Our aluminium energy efficient windows feature fully integrated thermal breaks that eliminate cold bridging. Aluminium windows deliver slim sightlines, maximum glass area, and Energy Star certified thermal performance for Calgary’s architecturally distinctive and modern homes.

Our wood exterior energy efficient windows combine the natural warmth and character of timber with high-performance insulated glass units. They deliver architectural beauty alongside Energy Star certified thermal performance for Calgary’s heritage and premium custom homes.

If your Calgary home requires a non-standard size, shape, material, or glass specification, we custom-manufacture energy efficient windows in-house to your exact requirements. Custom windows deliver a perfect fit, maximum thermal performance, and full Energy Star compliance with no compromises.
Energy Efficient Windows Services
Energy Efficient Windows
Replacement and Installation Service
We are a one stop solution for Calgary homeowners looking for energy efficient window replacement, new installation, or a custom energy efficient window manufactured to a non-standard size. Our certified in-house expert team handles every project from start to finish.

Energy Efficient Window Installation
For new builds, additions, or newly created openings, our certified technicians install custom-manufactured energy efficient windows with precision. Our energy windows are engineered for Calgary’s climate and backed by a 20+ year warranty on both products and installation.
Energy Efficient Window Replacement
If your existing windows are ageing, drafty, or underperforming, our energy efficient window replacement service removes the old units and installs custom-manufactured replacements that immediately reduce heat loss, lower energy bills, and improve indoor comfort.
Custom Energy Efficient Windows
For Calgary homes that requires a non-standard size, shape, or glass specification, we custom-manufacture energy efficient windows in-house to your exact requirements. We deliver a perfect fit and maximum thermal performance with no compromises.
Why Choose Apollo
Why Choose Energy Efficient
Windows for Your Calgary Home?
Our energy installation experts don’t just install or replace windows. We upgrade the entire thermal performance of your Calgary home with energy efficient windows that are built to deliver measurable, lasting results. Before leaving, we ensure every energy efficient window is precisely fitted, properly sealed, and performing at its highest rated standard.
Superior Thermal Performance
Our energy efficient windows are engineered with multi-chambered frames, Low-E glass coatings, and argon gas fills to achieve a U-Factor of 1.22 W/m²·K or lower and an Energy Rating. This translates directly into a warmer home in winter, a cooler home in summer, and lower energy bills every single month.
Triple-Pane Glass
For Calgary homeowners who demand the highest thermal performance, our triple-pane energy efficient windows add a third layer of glass and a second insulating cavity. They reduce heat loss by up to 50% compared to double-pane units and act as the strongest defence against Calgary’s most brutal winters.
Low-E Glass and Argon Gas
Our Low-E glass coating reflects heat back into your Calgary home during winter and blocks solar UV rays in summer to reduce heat loss and solar heat gain year-round. Combined with argon gas fills between panes, our energy efficient windows deliver consistent thermal performance through every Alberta season.
Perfect Energy-Efficient Fit
Every energy efficient window we produce is custom-manufactured in Calgary to your exact opening dimensions. We ensure an airtight seal, no gaps, and maximum thermal performance from day one. An imprecise fit eliminates the energy efficiency benefit entirely, which is why we custom manufacture energy windows.
Superior Noise Reduction Performance
Our energy efficient windows are available with double and triple-pane glazing combined with insulated multi-chambered frames. They significantly dampen outdoor noise, creating a noticeably quieter indoor environment for Calgary homeowners in busy urban and suburban neighbourhoods.
Manufactured in Calgary
Every energy efficient window we install is custom manufactured in-house at our Calgary facility. Our energy efficient windows are designed specifically for Alberta’s freeze-thaw cycles, high wind loads, and intense UV exposure. A product built for Calgary’s climate by a team that lives and understands Calgary weather.
Client Stories
Trusted by Thousands of
Calgary Homeowners
The entire window replacement process was seamless from start to finish. The crew arrived on time, were respectful of our home, and the new windows look absolutely stunning. Our heating bill dropped noticeably within the first month.

I got quotes from three Calgary window replacement companies. These guys were the most knowledgeable by far. They explained every option clearly and the installation was flawless. I highly recommend it.

We replaced all 14 windows in our home. The team was professional, clean, and fast. The quality of the windows is excellent and our home is noticeably warmer. Worth every penny.

I've worked with several Calgary window replacement companies over the years. This is the only one I recommend to my clients without hesitation. Quality product, reliable team, honest pricing.

Amazing experience from the first phone call to the final installation. The windows are beautiful and the energy savings are real. I wish I had replaced them years ago.

Our Calgary window specialists will assess your home, take precise measurements, and provide a free no-obligation quote for high-performance, ENERGY STAR® certified window upgrades.
Common Questions About
Energy Efficient Windows in Calgary
Everything Calgary homeowners ask us before upgrading to energy efficient windows. If you don’t see your question here, reach out to us for expert guidance.
What makes a window energy efficient in Calgary?
Energy efficient windows use double or triple-pane glass, Low-E coatings, gas fills, and insulated frames to reduce heat loss and improve comfort year-round.
What is a U-Factor?
The U-Factor measures heat loss through a window. Lower numbers mean better insulation and stronger energy performance.
What is the difference between double-pane and triple-pane windows?
Double-pane windows offer solid insulation, while triple-pane windows provide greater heat retention and improved winter performance.
Are there incentive programs for energy efficient windows in Calgary?
Yes. Programs like Calgary’s CEIP can help finance energy efficient window upgrades for eligible homeowners.
Can energy efficient windows lower energy bills?
Yes. High-performance windows reduce heat loss, helping lower heating and cooling costs throughout the year.
Do you use subcontractors for window installation?
No. All installations are completed by our certified in-house technicians to ensure proper sealing and performance.
What warranty do you offer on energy efficient windows?
All energy efficient windows include a 20+ year warranty covering both products and installation labour.
Request Your
Free Estimate
Our Calgary-based specialists will visit your home, assess your needs, and provide a comprehensive quote — completely free, with no obligation.
403-568-0777
sales@apollowindows.ca
3530 32 St NE #26, Calgary, AB T1Y 6G7
Monday – Friday: 8 AM – 5 PM

