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Best window pros near Belvidere, IL

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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon118
    Verified window services reviews

Top-Rated Window pros in Belvidere - Updated Nov 2026

Avatar for Mad City Windows & Baths
Mad City Windows & Baths
4.4(
838
)
New Windows - 6 +New Windows - 3-5New Windows - 2

Serving Belvidere, 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
7821 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
359
)
New Windows - 2New Windows - 3-5

Serving Belvidere, IL and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I am very pleased with my new windows. I used Home Genius Exteriors to do my roof, gutter protection, and now Windows. This is an absolute amazing company, my salesman brendan was very helpful, Devan the Project Manager helped make sure everything went smoothly. Walter and Mike also from production were very friendly and professional. And Shawn, the window installer was polite,knowlagable, and efficient. And even cleaned up on his way out. Next on the agenda is to get a new door taken care of. Highly recommend HGE"
Gutters & Gutter Guards
Gutters & Gutter Guards
Gutters & Gutter Guards
Gutters & Gutter Guards
Gutters & Gutter Guards

+53

Recommended by67%of homeowners
Avatar for Frontline Tint
Frontline Tint
5.0(
5
)
Window Tinting - Apply or Replace

Serving Belvidere, IL and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Skylight
Blackout Window Film
Frost Window Film
Frost Window Film
Frost Window Film

+6

39 neighbors recently requested a quote
Avatar for WesTower
WesTower
5.0(
6
)
Door or Window Screens - Install or RepairEgress Window - InstallHardware, Latches & Tracks (Window) - Repair or Replace+5 more

Serving Belvidere, IL and surrounding areas

Approved

"Hired to replace 2 window screens on the second story of our home. Val found another one that needed replacing, and he did that one too, for no additional charge. He also fixed our kitchen light so that it stopped blinking when we first turned it on. Friendly, courteous, punctual and professional. Will be hiring again."
LED Coffee Bar Cabinet
Platform Bed Assembly
TV Stand Assembly
Accent Chair Assembly
Kitchen Garbage Disposal

+3

4 neighbors recently requested a quote
Avatar for WindowWorks Chicago
WindowWorks Chicago
5.0(
1
)
New Windows - 6 +

Serving Belvidere, IL and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

Window Works is the best choice for all of your replacement window needs. From energy efficiency to beauty and durability, our products are made to last and improve the look and value of your home. Our glass systems can help reduce fading of carpets, drapes and furniture, all while keeping you comfortable inside no matter the weather. From traditional double-hung windows to fancy bow & bay windows and even sliding patio doors, Window Works is your one stop shop for window replacement. Our products are made in America and come with exceptional warranties. With over 21 years' experience, we can do it all. We take pride in our highly trained, experienced, expert installation teams and our knowledgeable and friendly staff. Call us today! We look forward to working with you!

Response time30 mins
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Windows FAQs, answered by experts

Having a professional caulk your windows will cost you around $50 to $70 per window (or $1.25 to $4 per linear foot), including labor. However, caulking is one of the easiest DIYs there is, and you’ll save a lot of money by getting the supplies and doing it yourself. You’ll only pay $0.05 to $0.20 per linear foot if you DIY this one. Finally, different types of caulk don’t vary too much in price, with most tubes costing no more than $15 apiece (but typically only $3 to $10) at the most. 

Energy-efficient windows cost more than other window types, but they can help you save on your monthly energy bills, get you some breaks on your taxes, and even increase the value of your home. According to Michael S. Regan, Administrator of the U.S. Environmental Protection Agency, when people invest in green upgrades like energy-efficient windows, they save energy, money, and more.

Awning windows are just like hopper windows except that they open the opposite way. Instead of opening inward, awning windows open outward with a hinge at the top. This creates a mini-awning within your window frame, which is where the name comes from. Hopper windows, on the other hand, open inward with a hinge at the bottom.

Typically, a bay window is, at minimum, 42 inches wide. That said, you can always design a custom bay window that is smaller—box bay windows are usually less than three feet in width and are ideal for smaller spaces.

Mold on windows forms due to excess moisture from condensation, poor ventilation, or leaks. Cold glass surfaces can attract condensation, especially in winter. High indoor humidity, lack of airflow, or dust accumulation are also contributors. To prevent mold growth, improve ventilation, regularly clean sills, and consider using a dehumidifier or sealing any leaks.

The Belvidere, IL homeowners’ guide to window services

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