Compare the highest-rated windows professionals in Janesville, Illinois. All contractors are licensed, insured, and verified through our rigorous screening process.
As part of the national Window World franchise, this provider offers a strong balance of brand reliability and local service. They are known for their efficient, high-volume replacement window services, making them a popular choice for homeowners seeking a cost-effective solution with a strong warranty. Their primary model is direct-to-homeowner sales and installation.
This is a premier provider offering high-end, custom window solutions. As an authorized Pella showroom, they provide expert consultation and installation for their own branded products, which are renowned for their quality, durability, and innovative features. They cater to clients looking for custom shapes, wood interiors, and superior energy performance.
A well-regarded local contractor based in the nearby hub of Pontiac. They offer a more personalized, full-service approach for window projects as part of their broader exterior remodeling services. This makes them an excellent choice for complex installations, repairs, and homeowners who prefer working with a versatile local business rather than a large franchise or manufacturer.
** The window service market for Janesville residents is characterized by reliance on established contractors from larger neighboring cities, primarily Pontiac and Bloomington-Normal. The competition is moderate but features a clear segmentation: from value-focused, high-volume franchises (like Window World) to premium manufacturer-direct showrooms (like Pella) and versatile local general contractors (like All-Star Construction). The average quality of service is high, as these companies rely on strong regional reputations. Typical pricing for a standard double-hung vinyl window replacement can range from **$400 - $800 per window**, including installation. Premium custom wood or fiberglass windows and complex installations can push the cost to **$1,000 - $1,500+ per window**. Most reputable providers offer strong warranties and are adept at helping homeowners navigate options for improving home energy efficiency.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Janesville regulations and climate
Get answers to common questions about windows services in Janesville, Illinois.
For a standard single-family home in Janesville, a full window replacement typically ranges from $8,000 to $20,000, depending on the number, size, and style of windows. Key cost factors include the choice of material (vinyl, wood, or fiberglass), energy efficiency ratings crucial for our Illinois climate, and the complexity of installation in older Janesville homes which may require extensive reframing or repair of rotted wood. Labor costs from local, licensed contractors also contribute to the final price.
The ideal times are during the mild, stable weather of late spring (May-June) and early fall (September-October), avoiding the peak humidity of summer and the freezing temperatures of a Janesville winter which can complicate sealing. For a full-home project, expect the process from measurement to completion to take 2 to 5 days, though scheduling with reputable local installers often requires booking several weeks in advance due to high seasonal demand.
Absolutely. Given Janesville's cold winters and hot, humid summers, look for windows with a low U-factor (for insulation against heat loss) and a low Solar Heat Gain Coefficient (SHGC) to block unwanted summer heat. Double-pane, Low-E coated, argon-gas-filled windows are the standard recommendation. Illinois also offers specific utility rebate programs, like those from Ameren Illinois, for installing ENERGY STAR® certified products, which can provide significant local savings.
Always choose a contractor who is licensed, insured, and has a strong local reputation with verifiable references in the Janesville area. Check for membership in local organizations like the Stateline Home Builders Association. Crucially, ensure they pull the proper City of Janesville building permits for your project—this protects you and ensures the work meets Illinois building codes, including egress requirements for bedrooms and proper flashing to handle our regional precipitation.