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TRUSTED BY GERMAN VALLEY, IL HOMEOWNERS

  • Average homeowner rating star icon4.1
    Average homeowner rating
  • Verified reviews icon19
    Verified window services reviews

Top-Rated Window pros in German Valley - Updated Nov 2026

Avatar for Mad City Windows & Baths
Mad City Windows & Baths
4.4(
836
)
New Windows - 6 +New Windows - 3-5New Windows - 2

Serving German Valley, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Warranties offered

"The installers were wonderful. Friendly, knowledgeable, fast and CLEAN! Youâ d barely know theyâ d been there!. And our sales person really helped us understand the best, but not most expensive windows for our house. If I need more windows they will be back!"
windows
siding
siding
siding
windows

+20

Response time10 mins
8480 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Mid America Basement Systems
Mid America Basement Systems
3.8(
67
)
Egress Window - Install

Serving German Valley, IL and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Costly! Incorrect measurement of basement windows delayed installation by months. I had to recaulk inside and out, to reseal. Broken window-slider handle. My continuous calls for window installation yielded, no apology or price break. Once installed payment notice immediately mailed with threat of collections because contract states payment at time of completion. No follow up on warranty, servicing etc of my crawl space encapsulation as promised to me at time of signing contract."
Crawl Space Before
Crawlspace After
Crawlspace in Progress
Taking care to keep the space clean.
Before Concrete Leveling

+41

Response time1 day
104 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for Mad City Windows & Bath - Madison
Mad City Windows & Bath - Madison
New to Angi
New Windows - 2New Windows - 3-5

Serving German Valley, IL and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

To learn about Mad City Windows and its history, you need to start back in 1998 when our family-owned company first opened its doors and changed the face of home remodeling in Wisconsin. From the beginning, our business has been built on a foundation of friendship and trust and, in return, local homeowners have come to know they can place their trust in us. In order make certain that we consistently earn that trust, we are dedicated to ensuring the expert, seamless delivery of high-quality products and remodeling solutions to homeowners throughout our service area. \n \nToday, we expand our home remodeling expertise across Wisconsin, Minnesota, Iowa and Illinois. With over 50,000 completed projects, we take our 2+ decades of experience to serve the communities of Minnesota, Iowa and Illinois. They can expect our highest standard of service and professionalism.

Testimonial Letter(s)
Home Exterior + Bath
Home Exterior + Bath
Home Exterior + Bath
Home Exterior + Bath

+19

Infinity Exteriors
New to Angi
New Windows - 3-5New Window - SingleNew Windows - 2+1 more

Serving German Valley, IL and surrounding areas

Approved (Corporate)

In business since 1997

Free estimates

Credit card accepted

At Infinity Exteriors, we set ourselves apart through our unwavering commitment to quality, craftsmanship, and customer satisfaction. Our comprehensive services include roofing, siding, windows, and gutters, all delivered with meticulous attention to detail. Our team consists of seasoned Project Advisors, Managers, and Installers who bring years of industry experience, training, and a dedication to high standards, ensuring every project meets our strict quality guidelines. \n \n

42 neighbors recently requested a quote
GGs Deep cleaning services
New to Angi
Window Cleaning

Serving German Valley, IL and surrounding areas

Approved

Professional Cleaning & Property Maintenance Services\n\nI take pride in providing reliable, quality cleaning and property maintenance services. I focus on keeping homes and outdoor spaces clean, neat, and well-maintained. I believe in hard work, attention to detail, and treating every property with care and respect. My goal is to provide excellent service, communicate clearly with customers, and make sure every job is completed to the customer's satisfaction.

KC Cleaning Crew
New to Angi
Window Cleaning

Serving German Valley, IL and surrounding areas

Approved

Offers commercial services

At KC Cleaning Crew, we specialize in post construction cleaning and general cleaning that gets your space ready for the spotlight — whether it's a grand opening, new office launch, or a freshly renovated property. We know the final step before opening your doors is making sure everything is spotless, safe, and presentation-ready. That’s where we come in.\n\nAs a proud local business, we’re more than just a cleaning crew — we’re part of the community. We’re committed to supporting other local businesses by providing reliable, detailed cleaning services that help you shine from day one.\n\nFrom dust to debris, we handle the mess so you can focus. We work with you to ensure all your cleaning needs are met with quality and in a timely manner. \n\nClean space and Clean start\n

Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Door or Window Screens - Install or Repair

Serving German Valley, IL and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Jim with North Alabama Technical Services removed some items from my computer so that I could send emails and attend to items I needed to address that day. As planned, the next day he thoroughly cleaned my computer, he also made helpful suggestions while working on my computer. I would call him again if needed and I thought the fee was reasonable."
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
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Showing 1-10 of 98
Windows FAQs, answered by experts

Energy-efficient windows are judged on their performance according to a few different factors, including heat transfer, air leakage, light transference, and condensation resistance. If you're unsure whether a window is energy-efficient, look for an ENERGY STAR® label from the U.S. Environmental Protection Agency (EPA). If various products, including windows, meet energy-efficiency standards set by the federal government, the EPA issues this label to help consumers identify energy-efficient products.

In most cases, you should get your windows cleaned one to two times annually, although you might want to complete this task more often if you live in an area with heavy pollen or heavy rain or snowfall that soils your windows. It’s also a good idea to hire a professional window cleaning service if you’re listing your property, as sparkling windows will make a big difference in terms of curb appeal and, potentially, your home’s value.

Egress windows require regular maintenance to ensure they function correctly. This includes cleaning the glass, inspecting the frame and well for debris, and making sure the cover or well drains properly. It is also important to check that the window sills and wells are watertight and to inspect and repair any damage to the window frame or seals to prevent leaks and maintain functionality.

Options include interior, exterior, and double-pane storm windows. Choose based on needs and preferences.

Whether you need a permit to install a bay window depends on the project's scope. Replacing an existing bay window typically does not require a permit. However, if you are adding a new bay window, requirements can vary. Adding a new bay window to the front of your house usually requires a building permit, while adding one to the side or back of your house often does not. It's always best to check with your local municipality to confirm the specific requirements in your area. Additionally, if you live in a historic district, you should consult your neighborhood association to ensure your project complies with their construction guidelines. If you're unsure about the process, a professional can provide guidance.

The German Valley, IL homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.