Three-panel window installed on plywood sheathing, part of a building under construction with house wrap visible.

Expert Window
 Replacement in Rockford

Energy-efficient window replacement that meets Illinois code and cuts winter heating bills.

100% Satisfaction Guaranteed

Window Solutions
 That Fit Your Home

Two white-framed double-hung windows installed side by side with blue manufacturer labels still attached.

Window Replacement

Replacing drafty, failing, or fogged windows with new code-compliant units that hold up through Rockford winters.

Wood framed double window with green curtains on both sides and stickers on the glass panes in a beige room.

New Construction Windows

New windows installed during framing for Rockford additions, garage builds, and basement remodels, built for Illinois winters.

New white double-hung window installed showing a backyard with a deck, grass, and a small white shed.

Energy-Efficient Upgrades

Low-E, double-pane, and triple-pane upgrades that meet current Illinois code and cut heating bills through Rockford winters.

Built On Quality Work
And Honest Service

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Abraham Bohren

These guys were a blessing. They did a HUGE JOB for me at a GREAT PRICE. When other crews were trying to price gouge me and charge over twice as much because they knew that I was desperate. They worked fast and they were very professional. I couldn't ask for more. Thanks guys!

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Jonah Summ

3Strong did a great job on my garage. They got the job done quickly and even worked into the night to make sure it followed our deadline.

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Tonia Riley

I contacted three strong handyman services. Early this Sunday morning The wind blew my storm door open and it broke. They came to my rescue and fixed my door. He came right away. Very professional. Thank you very much. I recommend three strong handyman services for any job!

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Arthur Hall

Solid guys, solid work. Arrived on time and repaired the damage on the side of the house from wind damage in great time.

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Sally A Sterling

Immediate response to looking at my desired project. Written detailed quote communicated suggested changes with detailed explanations to get desired results.

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Eileen Bores

We would recommend 3Strong Handyman Service. Bill put up a storm door for us. He did a really good job, we were impressed with his personality as well as his work. Price was good also.

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Why Energy-Smart Windows Matter

Old windows are one of the biggest sources of heat loss in Rockford homes. Replacing them with code-compliant, energy-rated units cuts heating bills, eliminates drafts, and quiets street noise.

Lower Energy Bills Year-Round
Eliminate Cold Drafts
Quieter, More Comfortable Home
A white-framed sliding window installed in a house under construction with PlyDry Housewrap visible around it and two people working inside.

Frequently Asked Questions

How long does window replacement take?

Most full-home window replacements are completed in one to three days, depending on the number of openings and any framing repairs needed around old, rotted sills. Single-window replacements are often done the same day.

Will new windows meet Illinois code?

Yes. Illinois has clear energy requirements for new windows in homes, especially around insulation and how much heat they let escape in winter. Every window we install meets or exceeds those requirements, so your home stays code-compliant and energy-efficient.

Can you replace windows in older Rockford homes?

Absolutely. Older homes often have out-of-square openings, old-style window weights and pulleys, or rotted framing around the bottom of the opening, sometimes from a slow leak overhead that also calls for roof repair. We handle the prep work so new windows fit clean and seal tight without changing the look of the home.

How much will I save on heating bills?

It varies by home, but Rockford homeowners replacing single-pane or failing double-pane windows typically see noticeable monthly savings, especially through January and February. Pairing window replacement with new doors amplifies the savings, and many homeowners update outdoor decks in the same season for a fresh look.

How much does window replacement cost?

Cost depends on size, style, glass package, frame material, and the number of windows. We do not quote ballpark numbers because every home is different. Get a free estimate here and we will work through the details with you.

What areas do you replace windows in?

We replace windows in Rockford and across nearby communities including Beloit, Belvidere, DeKalb, Freeport, Janesville, Loves Park, Machesney Park, Rochelle, and Sycamore. View our full service area here.

Our Service Area

Quality decks, doors, windows, and full home restoration serving Rockford and the surrounding communities.

Beloit, WI
Janesville, WI
Belvidere, IL
Loves Park, IL
DeKalb, IL
Machesney Park, IL
Freeport, IL
Rochelle, IL
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Get a Free Quote
for Your Service

Contact us for a free estimate. We proudly offer a military discount and a senior discount on every project.

Free Estimates Always
Military & Senior Discounts
$200 Referral Bonus
(779) 970-1989
50+ Happy Customers
100% Satisfaction Guaranteed
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