Canadian Windows & Doors Manufacturer

0% Deposit + do not pay till 2027
Alberta (403) 244-1053
Manitoba (204) 201-4511
British Columbia (604) 200-0144

Window Replacement in Calgary

✱ Offer Valid Until September 30th

✱ + FACTORY DIRECT PRICES

✱ Transparent Pricing - No Hidden Fees!

AlphaTech Windows & Doors

Fall Offer

60% off on Windows Installation
0% deposit · do not pay till 2027

Valid until September 30th
4.9 stars on Google Reviews BBB A+ Rated ENERGY STAR Certified







    AlphaTech Windows & Doors

    Fall Offer

    60% off on Windows Installation
    0% deposit · do not pay till 2027

    Valid until September 30th
    4.9 stars on Google Reviews BBB A+ Rated ENERGY STAR Certified







      What Our Customers Say

      Posted on Google Google
      Minda Lu profile picture
      Minda Lu
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      Very good very workers . Very professional in terms of their workmanship. Very thorough in every detail of the project from sales representatives to the office as well as the project installers. Great team through and through. I highly recommend them to install your new windows. I would rehire them again in near future ! Lovely. Cheers.
      Posted on Google Google
      Andrea Ducharme profile picture
      Andrea Ducharme
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      Sergey and his partner were very much professional, kind, and very neat and tidy with there work They did my windows and doors over the weekend and I have 0 complaints about there company and work ethic
      Posted on Google Google
      Lacy profile picture
      Lacy
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      I just had all my windows in my home replaced, and Alphatech did not disappoint! Great new windows at an affordable price! The installation went smoothly! Sergei and his helper were great to work with and worked very efficiently!! They were very polite and great to work with. The whole process from getting a quote, ordering and installing was a breeze! My house looks completely different now! I highly recommend using Alphatech Windows and Doors!!!
      Posted on Google Google
      Cassandra Simpson profile picture
      Cassandra Simpson
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      Our 4 new exterior doors look and work amazing. Both AlphaTech installers did such a great job, they were professional and super friendly. Thank you Sergey, we can’t wait to work with you again when we need our windows replaced. I wouldn’t even think of using any other company.
      Posted on Google Google
      Pierre Njoloko profile picture
      Pierre Njoloko
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      AlphaTech Windows and Doors did good work for my house they change the windows and door the service is perfect the window and the doors is good quality and now my energy bill is low. so thank you so much AlphaTech Windows
      Posted on Google Google
      Kathy Wegner profile picture
      Kathy Wegner
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      Excellent from start to finish. Natasha (Project Manager) was very knowledgeable and helpful with our choice of design. Both installers were efficient, respectful and courteous. Highly recommend Alphatech.
      Posted on Google Google
      Verna Trainer profile picture
      Verna Trainer
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      The two men did an awesome job of installing our 5 windows and two doors. They were fast and efficient and professional at what they did. They were polite and enjoyed them in our home. Thank you Sergei and Artur. I would recommend this company. Thank you for an excellent job.
      Posted on Google Google
      Gilbert Bazan profile picture
      Gilbert Bazan
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      My family and I are overly satisfied with the window replacement, I even recommended it to friends! One of my closest friends, will get their window done pretty soon! Mine, look perfect in all our rooms, bathrooms, dining and living room. Thank you Alphatech!
      Posted on Google Google
      Graham Jones profile picture
      Graham Jones
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      The guys that arrived were efficient, early and hard workers to get all 12 windows in, in a day. They even worked late. Returning the next day early to fit and finish the 2 doors and clean up. Very polite and respectful of my house. A*
      Posted on Google Google
      Rolf Kirchner profile picture
      Rolf Kirchner
      Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
      The men did a great job installing the new windows, cleaned up after the job was done. Would recommend Alpha Tech to anyone.

      Before & After

      Case Study 1970s Home Full Window Replacement Lethbridge Window Replacement Lethbridge
      Before
      After
      Before Image 2 After Image 2
      Before
      After
      Before Image 3 After Image 3
      Before
      After

      Factory-Direct Pricing On Replacement Windows in Calgary

      Save Big on Energy-Efficient, Canadian-Made Windows in Calgary. Get ENERGY STAR® certified replacement windows at true factory-direct prices. No middleman, no overpaying — just real savings. Book your free, no-obligation quote today! BBB A+ Rated.

      Windows & Doors Warranty

      Setting The Standard For Calgary Home Owners: 25-Year Transferable Warranty!

      When you choose an AlphaTech window not only do your receive a beautiful window you also receive a FREE and transferable 25-year warranty. Failing windows not only lower home efficiency but lower the value of your home. Replace your windows with AlphaTech windows and make your Calgary home more desirable and valuable with a transferable warranty.

      Windows & Doors Warranty

      Our Products

      AlphaTech Windows & Doors Calgary is your quality supplier offering distinctive blends of high-quality colors and materials, adding elegance and durability to your Calgary home. 
 CLICK HERE to view our windows
      Quick Quote! Quick Quote!

      Certifications & Recognitions

      Certification 1
      Energy Star Certified
      BBB A+ Rated
      Reviews Google
      Fenestration Canada
      Certification 5
      Vinylbilt Warranty
      Window Wise Certified
      High quality energy efficient windows installation in Calgary

      PREMIUM QUALITY WINDOWS

      At AlphaTech Windows & Doors in Calgary, Alberta, we are dedicated to delivering exceptional window and door solutions by integrating the latest, most advanced technologies in our manufacturing processes. Utilizing cutting-edge methods and state-of-the-art equipment, we ensure that every product not only meets but exceeds industry standards. This commitment results in exceptional quality, durability, and performance, setting our windows and doors apart in the market.

      ENERGY-EFFICIENT WINDOWS

      In Calgary, Alberta, AlphaTech's windows are engineered to excel in energy efficiency. During winter, they effectively capture and retain solar heat, reducing nighttime heat loss. In summer, our advanced technology acts as a barrier against hot, humid air, preventing it from infiltrating your home. This results in noticeable reductions in both heating and cooling costs resulting in up to 20% reduction in energy bills, while at the same time enhancing comfort.

      ENHANCED INDOOR COMFORT

      At AlphaTech Windows & Doors in Calgary, Alberta, we believe that enhancing your home's aesthetics should go hand-in-hand with providing lasting comfort and energy efficiency. Our meticulously crafted vinyl windows are designed to withstand Calgary's diverse climate, ensuring your home remains comfortable year-round. With a variety of stylish interior and exterior options, you can customize your windows to reflect your personal taste while benefiting from modern energy-efficient technology. Choose AlphaTech to transform your living space with windows that seamlessly blend style, durability, and performance.

      BUILT FOR LONG-TERM DURABILITY

      At AlphaTech Windows & Doors in Calgary, Alberta, we are dedicated to delivering exceptional quality by utilizing premium materials and meticulous craftsmanship, all under our steadfast Zero-Defect commitment. This approach ensures our windows not only meet but exceed durability expectations, providing lasting value for homeowners.

      Materials

      We base our products on advanced materials, such as high-quality vinyl. This material ensures unparalleled strength, moisture resistance, and durability. The vinyl profiles we use reflect the latest innovations in the industry, providing reliable protection against the effects of time and varying weather conditions in Calgary.

      Window Materials

      Interior View

      1. Multi-chambered frame to strengthen and provide additional stability and improve overall thermal performance
      2. Dual glazed with 1" overall or triple glazed with 1 3/8" overall glazed available
      3. Welded sash with steel reinforcement

      Colors

      Inspired by the latest design and architectural trends, our windows & doors color palette ranges from modern neutral shades to rich and vibrant tones. Our window systems provide a rich array of colors, emphasizing your home's style. Color consistency is ensured through precision manufacturing and resistance to environmental factors in Calgary.

      Commercial Brown
      Brownstone
      Slate
      Pebble
      Sable
      Black
      Iron Ore
      Chestnut Brown
      Dover Grey
      Cream
      Sandalwood

      Case Study: Stylish Window Upgrade for a 1950s Calgary Bungalow

      Project Overview

      This 1950s bungalow in Calgary’s northwest was ready for a refresh. The homeowners wanted to brighten the home, reduce heat loss during Calgary’s cold winters, and improve the dated exterior. Their goal: a more modern look, better comfort, and lower energy costs.

      AlphaTech Windows & Doors stepped in with a complete window replacement solution that balanced visual impact with practical energy savings—transforming the entire front elevation of the home.

      Before & After Transformation

      As shown in the image:

      • Before: Small, narrow windows with dark frames made the home feel dated and closed off from the street.
      • After: We replaced them with wide, white-framed double-pane casement and fixed windows, creating a brighter, more inviting façade with enhanced curb appeal.

      Customer Goals

      • Bring in more natural light
      • Improve energy efficiency and reduce drafts
      • Give the home a fresh, clean, modern look
      • Maintain the original charm of the bungalow while upgrading performance

      Our Solution

      • Installed double-pane vinyl casement and picture windows for a balance of affordability, energy performance, and style
      • Used clean white frames to modernize the exterior and add contrast with the brick and stucco
      • Customized all window sizes to match existing openings for a seamless fit and tight insulation

      Results

      Enhanced Curb Appeal: The modern window layout updated the look of the entire home without structural changes

      More Natural Light: Wider windows opened up the front rooms and created a more spacious feel

      Energy Efficiency: Double-pane glass and proper insulation significantly reduced heat loss

      Improved Comfort: The elimination of old, leaky windows made the home quieter and more comfortable year-round

      Why choose our windows & doors?

      AlphaTech Windows & Doors in Calgary offers a wide range of high-tech window and door systems that ensure comfort, security, and energy savings.

      Quick Quote!

      Comfort & Efficiency

      We utilize cutting-edge materials such as energy-efficient glass and smart climate control systems. This not only allows our customers to save on heating but also creates the perfect indoor microclimate.

      Style Variety

      Our assortment provides a variety of styles, from modern to classic, so every customer can find windows that suit their taste.

      Attention to Detail

      It’s our attention to detail that makes the difference in the performance of our windows. Technologically advanced components you may not see are designed to ensure complete reliability for years to come.

      Clear Advantages

      The benefits of choosing AlphaTech Windows & Doors in Calgary are clear – high-quality products, modern technologies, and an individualized approach to each customer.

      Why Choose Our Window Solutions?

      Energy Efficiency and Savings

      Turning to AlphaTech Windows & Doors ensures cutting-edge window systems designed for maximum energy efficiency. This leads to significant savings on electricity bills and creates a comfortable indoor climate year-round.

      Access to Government Grants

      We guide our clients through available programs and assist in accessing grants that support energy-efficient home improvements. This additional financial benefit enhances the overall value of choosing our products, making your investment even more rewarding.

      Product Warranty

      All our products undergo demanding quality control, and we provide a warranty for each window. This gives you confidence that your investment is protected, and we stand behind the high performance of our products.

      Durability and Quality

      Our windows are crafted from high-quality materials, guaranteeing durability and reliability. Choosing us means investing in products that will serve you for decades with minimal maintenance.

      Individualized Approach and Style

      We provide a wide range of styles and designs, allowing you to choose windows that reflect your unique taste and style. Our individualized approach ensures that each customer receives a solution tailored to their needs and preferences.

      Front view of a single-story brown house with stone columns, white trim, and a well-kept lawn; a sign sits on the front lawn near the curb.

      AlphaTech Windows & Doors

      Fall Offer

      60% off on Windows Installation
      0% deposit · do not pay till 2027

      Valid until September 30th
      4.9 stars on Google Reviews BBB A+ Rated ENERGY STAR Certified