The 9 Best Window Installation Companies in Charleston, SC

Southern Industries Home Improvements has earned a solid 4.7 rating from 779 reviews, making them a reliable choice for window installations. Customers appreciate their competitive pricing and attention to detail. They are particularly well-regarded for offering a good balance of quality and affordability. However, some reviews mention that scheduling can be tricky during busy seasons.

Icon Window and Door holds a strong 4.9 rating from 44 reviews, showcasing satisfied customers who commend their expertise in window and door installations. They excel in providing tailored solutions and are known for their quick turnaround times. However, the limited review count may leave some potential clients wanting more reassurance about consistency.

The Glass Guru has a 4.6 rating based on 325 reviews. Customers often highlight their responsiveness and quality glass replacement services. Best suited for glass repair and replacement, they might not be the best pick for full window installations. Some customers have noted longer wait times for service. A review base that deep is hard to game, and the score barely moves across it, which is the clearest consistency signal we track. Most of what reviewers hire it for is glass repair and replacement. It serves Charleston and surrounding areas, with $150 to $500 per window pricing, and the honest trade-offs are longer wait times for service and less focus on full window installations.

Window Nation maintains a 4.6 rating from 173 reviews, showcasing a reputation for quality products and skilled installations. Customers appreciate their extensive selection of window styles. However, some feedback points to inconsistency in customer service experiences, which can be a concern for new clients. That is a substantial body of feedback for a local operator, enough to trust the rating rather than credit a lucky streak. Most of what reviewers hire it for is variety of window styles. It serves Charleston and surrounding areas, with $250 to $700 per window pricing, and the honest trade-offs are inconsistent customer service and higher pricing for premium models.

The Window Source of the Lowcountry has a perfect 5.0 rating from 15 reviews, indicating a strong start for this newer business. Customers are impressed by their personalized service and quality installations. However, the small review base makes them a promising but unproven option for larger projects. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is personalized window service. It serves Charleston and surrounding areas, with $200 to $600 per window pricing, and the honest trade-offs are limited review base and newer to the market.

Coastal Siding & Windows holds a 4.5 rating from 32 reviews, appreciated for their friendly service and solid workmanship. They are a solid choice for window installations, but the limited number of reviews suggests that they may not yet have a proven track record for larger projects. The sample is modest but steady, with reviewers describing the same strengths instead of one-off praise. Most of what reviewers hire it for is friendly, smaller installations. It serves Charleston and surrounding areas, with $250 to $650 per window pricing, and the honest trade-offs are limited review base and not as well-known.

Alside has a 4.6 rating from 13 reviews, indicating a focus on quality products. Customers appreciate their window variety but have noted that the service can be slow at times. This might not be ideal for those looking for a quick turnaround on installations. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is quality window products. It serves Charleston and surrounding areas, with $300 to $700 per window pricing, and the honest trade-offs are slow service and limited review base.

Window World of the Lowcountry has a 4.3 rating from 307 reviews, known for their affordability and wide selection. Customers often mention the great value for budget-conscious buyers. However, the trade-off can be less attention to detail in installations, which may not suit those seeking high-end finishes. A review base that deep is hard to game, and the score barely moves across it, which is the clearest consistency signal we track. Most of what reviewers hire it for is budget-friendly window options. It serves Charleston and surrounding areas, with $150 to $500 per window pricing, and the honest trade-offs are less attention to detail and mixed reviews on installation quality.