By Ecoline Windows

SPONSORED CONTENT

6 Best Window Replacement Companies in Lethbridge

Oct 8, 2025 | 7:00 AM

Statistics indicate that Alberta households spend approximately $5,000 a year on energy costs. And with the cold season just around the corner, now is the best time to prepare your home for winter. If your current windows are drafty, leaky, inefficient or showing signs of wear, scheduling a replacement before the big holidays ensures your home stays cozy, efficient, and comfortable.

But the big question is: who should you trust with the job? In Lethbridge, homeowners can choose between super-local companies with a community focus or larger Alberta-wide brands that bring broader resources and product lines. Each has its own pros and cons, which is why we’ve put together this guide.

Here’s our breakdown of the 6 best window replacement companies in Lethbridge to help you make an informed decision:

1. Ecoline Windows
2. GreenFox Windows
3. Window Mart
4. AlphaTech Windows
5. Window Time
6. Durabuilt Windows

Top-6 Window Companies in Lethbridge: Side-by-Side Comparison

Nighttime construction on Hwy 3 in Lethbridge starts April 17

Apr 17, 2025

SASHA launches #BuyABed fundraiser to support vulnerable Lethbridge residents

Apr 04, 2025

$20K grants available: TELUS STORYHIVE Pan-Asian Edition opens applications April 1

Mar 18, 2025

• Ecoline Windows

Ecoline Windows is arguably the biggest and most reputable brand across Alberta, trusted by thousands of homeowners for their expertise in vinyl window replacement. With thousands of positive reviews and completed projects province-wide, they’ve become a household name when it comes to energy-efficient upgrades.

While they don’t have a physical showroom in Lethbridge, Ecoline has a dedicated local representative and their crews have worked in nearly every neighbourhood across the city. They’re especially valued for winter window installations, where their experience ensures homes stay warm and protected during the coldest months.

Top Window Company Highlights:

• Manufacturer and installer with full control over product and installation
• One of Alberta’s most recognized and reputable window companies
• Partnership with The Home Depot for direct product access
• Experts in winter-ready, energy-efficient installations

Interested in their products? You can schedule a free consultation online or visit the Ecoline Windows showroom at 3307 Dunmore Rd SE #12, Medicine Hat, AB T1B 3R2.

• GreenFox Windows

GreenFox is a well-established Alberta company with a reputation for high-quality window installations. Known for combining modern energy-efficient products with strong customer service, they serve homeowners in Lethbridge through a dedicated local team.

GreenFox offers a wide variety of vinyl custom windows, providing homeowners with the flexibility to choose between traditional and contemporary designs.

Their projects are backed by comprehensive 25 year warranties on product and labour, and many clients appreciate their attention to detail and adherence to professional installation standards.

With a growing presence in Southern Alberta, GreenFox has become a trusted option for homeowners seeking reliable upgrades. To schedule a consultation, contact them here or visit the local showroom at 3180 36 St N, Lethbridge, AB T1H 7E5.

• Window Mart

Window Mart is a provincial window and door company with operations in Lethbridge and across Alberta. They focus specifically on vinyl windows, offering homeowners a solid range of styles, including casement, slider,  hung and other custom window styles.

While their selection covers the most popular designs, custom features and options are more limited compared to some larger competitors. That said, Window Mart is known for competitive pricing, financing options, and frequent promotions, which appeal to budget-conscious homeowners. Their scale, combined with dedicated local service, makes them a trusted name in the window market of Southern Alberta.

To schedule a consultation, contact them here or visit the local showroom at 1502 2 Ave S, Lethbridge, AB T1J 0G1.

• AlphaTech Windows

AlphaTech is a smaller, less-known competitor in the Lethbridge market compared to some of the big names above. With a limited number of reviews, it’s more challenging to form a comprehensive picture of their performance. Still, overall customer feedback suggests that they are a reliable company that offers a wide range of window styles tailored to Alberta’s climate.

Many homeowners highlight their crews for working quickly and efficiently, while others appreciate their regular promotions. Some reviews mention that pricing is slightly higher than that of competitors’, although this often depends on the project and custom solutions required.

To schedule a consultation, contact them here or visit the local showroom at 907 3 Ave S, Lethbridge, AB T1J 0J1.

• Window Time

Window Time is a local Lethbridge company that supplies and installs Ply Gem windows, a major North American manufacturer. This gives homeowners access to a wide product line with strong energy efficiency ratings, but it also means that warranty terms depend on the specific Ply Gem product chosen.

While the company handles installation, service and coverage can sometimes be more complicated since the warranty is tied to the manufacturer rather than the installer. Even so, many homeowners appreciate the convenience of working with a local team and the reassurance of products backed by a recognized brand.

To schedule a consultation, contact them here or visit the local showroom at 3447 30 Ave N Unit 8, Lethbridge, AB.

• Durabuilt Windows

Durabuilt is a well-known Canadian manufacturer and installer, with decades of experience and a strong reputation across Alberta. They produce a wide range of window series, offering homeowners a variety of choices and the assurance of working directly with a manufacturer. This scale and brand recognition make them one of the more trusted names in the industry.

However, in Lethbridge, they fall to the bottom of this list because of frequent customer feedback about being difficult to reach for service once the installation is complete. Some reviews also note issues with ice buildup during extreme cold spells below –30°C, which raises concerns for Prairie homeowners. While still a reliable option, potential customers should carefully weigh these factors.

To schedule a consultation, contact them here or visit the local showroom at 1350 39 St N, Lethbridge, AB T1H 5L8.