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10 Best Window Replacement Companies in Janesville, WI

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Written By David Cusick

Last Updated April 2024

Whether you want to improve your home's value, energy efficiency, or both, replacing your windows is an excellent idea. If your windows are on the older side, 25–30% of your house’s heat or cool air could be leaking out, according to the Department of Energy. In Janesville, this can add up to an extra $355 a year on your energy bills. Picking a window installer can be tough, which is why we've put together a guide to the top window installers in Janesville.

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Top 10 Best Window Replacement Companies in Janesville

Renewal by Andersen

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5960 Odana Rd #100, Madison, WI 53719 (608) 442-0032 renewalbyandersen.com

Price transparency

Free assessment

Timely service

Good customer service

Educational website

Services Offered

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

Champion Replacement Windows of Madison

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5321 Voges Rd, Madison, WI 53718 (608) 205-4829 championwindow.com

Price transparency

Free assessment

Good customer service

Services Offered

Bay windows
Double-hung
Window replacement/installation
Glass doors

Champion Replacement Windows of Milwaukee

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16560 W Glendale Dr, New Berlin, WI 53151 (414) 208-4056 championwindow.com

Price transparency

Good customer service

Free assessment

Services Offered

Double-hung
Glass doors
Window replacement/installation
Bay windows

Window World of Rockford

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

Price transparency

Free assessment

Educational website

Timely service

Good customer service

Services Offered

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

City Glass Company, Inc.

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2536 Center Ave, Janesville, WI 53546 (608) 754-4411 cityglasswisconsin.com

Good customer service

Educational website

Free assessment

Price transparency

Services Offered

Glass showers
Mirrors
Glass doors
Window replacement/installation

Bob’s Custom Windows & Siding, Inc.

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1015 N Parker Dr, Janesville, WI 53545 (608) 756-0735 bobscustomwindowsandsidinginc.com

Price transparency

Good customer service

Educational website

Free assessment

Services Offered

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

Country Glass, Inc.

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1492 Huebbe Pkwy, Beloit, WI 53511 (608) 365-6550 marvin.com

Educational website

Good customer service

Timely service

Price transparency

Services Offered

Skylights
Bay windows
Double-hung
Window replacement/installation

Marling Lumber and HomeWorks

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1138 Humes Rd, Janesville, WI 53545 (608) 754-1123 marling.com

Educational website

Price transparency

Good customer service

Services Offered

Energy-efficient options
Window replacement/installation

Legan Construction & Remodeling

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3912 Creekside Dr, Janesville, WI 53548 (608) 774-0100 leganconstruction.com

Price transparency

Free assessment

Educational website

Good customer service

Services Offered

Vinyl frames
Window replacement/installation

Wisco Roofing and Windows

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1507 Plainfield Ave, Janesville, WI 53545 (608) 563-0542 wiscoroofing.com

Good customer service

Free assessment

Price transparency

Educational website

Services Offered

Energy-efficient options
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 Janesville?

The price of window installation or replacement varies based on several factors, including how difficult your windows are to access or install, the number and size of the windows, and the materials you choose. On average, Janesville homeowners should expect to 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

Installing new energy-efficient windows can greatly improve your home's value, appearance, insulation, noise reduction, and comfort. Some clear indicators it's time for new windows include the following:

  • Windows that are difficult to open, close, or lock properly due to age and wear.
  • Drafts and cold air leaking in from old, loose-fitting windows.
  • A chilly house and high energy bills due to poor insulation.
  • Fogging between window panes, condensation issues, or rotting window frames that allow moisture intrusion into the home.
  • Inefficient and outdated window styles that reduce your home’s curb appeal.

How To Choose a Window Company

For a successful window replacement, you need to find an installer with proven expertise. Below, we go over the most important qualifications for picking a window installer.

Experience

Make sure you choose an experienced local installer with a long record of successfully installing and replacing windows. Installers that have served Janesville for years are more likely to understand the local climate and local homeowners' needs. Get references from recent clients to learn more about a provider’s service.

Certifications

Choose an installer that’s accredited like major window manufacturers, 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 rather than subcontractors, and confirm that any technicians working on your home have certification.

Reputation

Spend time reading through online reviews, verifying with the Better Business Bureau (BBB), and asking for local references. Review customer feedback to make sure that the company consistently does quality work and provides good service. Avoid companies with complaints of poor work or unfinished jobs.

Process

A good provider will give you a detailed project plan, well-outlined timeline, clear expectations, and an overview of all material and installation options. Avoid providers that offer vague quotes or timelines. Insist on consistent contact throughout the process, so you aren't caught off guard when installation starts.

Warranties

Research window installers that assure quality installations and offer warranties on materials and labor. This shows confidence in their work. Choose companies with unlimited lifetime warranties that transfer to new homeowners.

Materials

Make sure your window installer offers durable, long-lasting window options and top energy-saving window brands that fit your budget. Look for good energy ratings, design flexibility, and enhanced UV protection. Check that the window materials also include manufacturer warranties.

Frequently Asked Questions About Window in Janesville, WI

In Janesville, the optimal time to install windows is during the early fall when the temperature is milder, so the windows can fit and adjust properly. A professional local window installer in Janesville will be able to tell you when the best time is to install windows on your home.

The best type of replacement window for your Janesville home will vary based 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. Wooden windows can provide a classic look and feel, while vinyl windows are more popular in newer homes. Fiberglass windows are also a popular choice, since they are energy efficient and durable.

The types of window that generally last longest are ones constructed from vinyl or wood, with triple glaze for extra insulation. Vinyl windows are famous for their long-lasting nature and need little maintenance, while wood windows provide a more classic look. Tripling up on the glazing will reduce heating and cooling bills in the long run. This is especially helpful during Janesville's cold winters.

The installation process for windows typically takes a day or two depending on the number of windows to be installed. Experienced window installers will be able to provide an estimate on the time it will take to complete the installation job, but you can expect it to take around 30 minutes per window.

Yes, many window companies offer financing options. Some installers offer low-interest or no-interest loans based on your income, while other companies offer unique financing plans with terms and conditions that vary depending on the project.

Getting windows professionally installed can provide a number of benefits. Professional installers can ensure that your windows are properly fitted, sealed, and insulated, minimizing air leakage and maximizing energy efficiency. Professional installers are also well-equipped with the necessary tools and techniques to do the job right, which can save you time and money.

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