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10 Best Window Replacement Companies in Flagg, IL

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Written By David Cusick

Last Updated April 2024

Whether you want to increase your home's value or decrease your energy bills, replacing your windows is an excellent idea. In Flagg, you could save almost $309 per year on your energy bills by replacing your windows. Potential leaks or drafts can reduce your home’s energy efficiency by up to 30%, according to the Department of Energy. Our guide to the top window installation companies in Flagg will help you find the right installer for you.

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Top 10 Best Window Replacement Companies in Flagg

Renewal by Andersen of Chicago

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14503 S Gougar Rd #800, Lockport, IL 60491 (866) 836-2764 renewalbyandersen.com

Price transparency

Educational website

Good customer service

Free assessment

Services Offered

Bay windows
Skylights
Window replacement/installation
Custom window designs
Glass doors
Double-hung

Window World of Rockford

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6010 Forest Hills Rd, Loves Park, IL 61111 (815) 395-1333 windowworldrockford.com

Timely service

Free assessment

Educational website

Good customer service

Price transparency

Services Offered

Energy-efficient options
Double-hung
Bay windows
Custom window designs
Window replacement/installation
Glass doors

Freedom Builders & Remodelers

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1125 Milford Ave, Rockford, IL 61109 (815) 985-0310 rockfordremodeling.biz

Educational website

Price transparency

Free assessment

Services Offered

Glass doors
Window replacement/installation

Pella Window and Door Showroom of Rockford, IL

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4301 11th St, Rockford, IL 61109 (815) 397-6780 pella.com

Educational website

Free assessment

Good customer service

Price transparency

Services Offered

Glass doors
Double-hung
Window replacement/installation

MDS Construction, Inc.

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920 E River Rd, Dixon, IL 61021 (815) 315-8753 mdsinco.com

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Price transparency

Good customer service

Services Offered

Window replacement/installation

Douglas Exteriors

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2045 Coltonville Rd, Sycamore, IL 60178 (815) 751-7682 sidingcontractordekalb.com

Good customer service

Price transparency

Educational website

Free assessment

Services Offered

Window replacement/installation

Home Services at The Home Depot

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6930 Argus Dr, Rockford, IL 61107 (815) 324-0167 homedepot.com

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Educational website

Free assessment

Good customer service

Services Offered

Mirrors
Window replacement/installation
Glass showers
Tempered glass
Glass doors
Wood frames

Huskie Exteriors

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4901 W State St, Rockford, IL 61102 (815) 519-3237 huskieexteriors.com

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Price transparency

Good customer service

Services Offered

Window replacement/installation
Energy-efficient options

Kobyco Inc

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4131 N Perryville Rd, Loves Park, IL 61111 (815) 654-5151 kobycoinc.com

Price transparency

Good customer service

Free assessment

Educational website

Services Offered

Bay windows
Window replacement/installation
Custom window designs
Vinyl frames
Double-hung
Glass doors

Pella Windows & Doors of Mendota

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907 Washington St, Mendota, IL 61342 (815) 539-7724 pellachicago.com

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Price transparency

Educational website

Good customer service

Services Offered

Double-hung
Window replacement/installation
Glass doors
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on window replacement companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How Much Does Window Installation Cost In Flagg?

Window installation and replacement costs are influenced by a number of factors, including the number and size of the windows, the materials you choose, and how difficult your windows are to access or install. On average, Flagg homeowners will spend about $280 per window*. Below are additional cost breakdowns. *Cost data based on sample pricing for window installation from multiple retailers and adjusted for local cost of living.

When To Replace Windows

Adding new energy-efficient windows can greatly increase your home's appearance, noise reduction, value, insulation, and comfort. Signs that it's time to invest in new windows include the following:

  • Inefficient and outdated window styles that take away from your home’s curb appeal.
  • Cold air and drafts leaking in through old, loose-fitting windows.
  • Fogging between window panes, condensation issues, or rotting window frames letting in moisture.
  • Windows that are difficult to open, close, or lock properly due to age and wear.
  • High energy bills and a chilly house from poor window insulation.

How To Choose a Window Company

Hiring a qualified window installer is critical to a successful project. Below, we cover the main factors to consider when making your selection.

Experience

Find well-established local installers with considerable experience. Providers that have worked in Flagg for years are more likely to know the local climate and how to best meet your needs. Request references from recent customers to confirm a company’s reputation.

Certifications

Choose an installer that’s accredited like leading window companies, and that has Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Appropriate accreditation means they've received proper training in installation best practices. Verify that installers are staff, not subcontracted laborers, and confirm that the technicians assigned to your job have certification.

Reputation

Read through online reviews, check the Better Business Bureau (BBB), and ask for local references. Review customer feedback to confirm that the provider consistently delivers quality work and good customer service. Avoid companies that have complaints of shoddy work or unfinished jobs.

Process

The best company will take time to provide you with a comprehensive project plan, timeline, expectations, and reviews of all material and installation options. Beware of unclear quotes or timelines that lack clear and specific information. Look for consistent communication throughout the process to avoid surprises down the road.

Warranties

Seek out contractors that stand behind their work and provide warranties on labor and materials. This demonstrates confidence in their window installations. Seek out unlimited lifetime warranties that can even be transferred to new homeowners.

Materials

Ensure that a company works with durable, energy-efficient window brands that work with your budget. Look for enhanced UV protection, design flexibility, and good energy ratings. Confirm the window materials come with their own manufacturer warranties as well.

Frequently Asked Questions About Window in Flagg, IL

In Flagg, the best time to install windows is when temperatures are mild, generally in the spring or fall. These conditions enable professionals to do their work without having to worry about the weather.

The best type of replacement window for your Flagg home will depend on your home's age, as well as your personal style and budget. You'll want to consider the style of your home — such as if it's older — so your new windows match. Wood windows can provide a classic look and feel, while vinyl-framed windows are more popular in more modern homes. Fiberglass windows are also a popular choice, since they can be energy efficient and long-lasting.

Windows made from fiberglass, wood, or vinyl are known to last the longest, with some lasting for close to 45 years. Vinyl windows are especially durable and low-maintenance, making them a good choice if you want windows that can last a long time. Extra glazing can help reduce your cooling and heating bills over time.

The process for window installation typically includes measuring the space, removing the existing windows, installing the replacement windows, inspecting for proper insulation, and applying caulk around the edges of the frames. Extra steps may be necessary depending on the style of window being installed.

You should wipe away any debris or dirt buildup from the windows when they get dirty. Additionally, you should check your windows monthly to make sure they're still functioning properly. It's also a good idea to have a professional inspect your windows once a year for any potential damages or issues.

Window companies in Flagg usually offer a wide range of services, including measuring and installing new windows, repairing existing windows, replacing window glass, and installing window treatments. They may also offer extra services such as weatherproofing or cleaning.

Getting windows installed by a professional can provide a number of benefits. Professional installers can guarantee that your windows are properly installed, weatherproofed, and insulated, preventing air leakage and maximizing energy efficiency. Professional installers are also trained in the necessary tools and techniques to get the job done, which can save you time and money.

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