Kendra Hall
Sales and installation went smoothly for whole house project but windows are leaky and customer service is poor. The problem wasn't resolved so now I'm stuck with them and no recourse. I don't recommend them based on my experience.
Business ProfileWindow Installers in Rockford, Illinois
Feldco Windows, Siding, Doors & Roofing of Rockford
Feldco Windows, Siding, Doors & Roofing of Rockford
Feldco replaces residential windows in Rockford and serves communities in Illinois and Wisconsin. Its vinyl windows feature double-strength ¾-inch insulated glass with Low-E and a DuraLite® spacer system. The company traces its origins to a Chicago home-window replacement business in 1976.
Last Updated October 2, 2026.
Business Highlights
- Family-owned and operated.
- Feldco lists a lifetime warranty for Sophia Series windows, including accidental glass breakage, and a five-year labor warranty.
Service Area
Rockford, DeKalb, Beloit, Huntley, Yorkville and Belvidere.
Active Business Listing
Feldco Windows, Siding, Doors & Roofing of Rockford is one of 10 window installers ProsGrade lists in Rockford, Illinois.
Active
Public local listing
Listing details
5 services listed, including Window replacement, Siding replacement and Door replacement. Open 7 days a week. Rated 4.6 from 425 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How Feldco Windows, Siding, Doors & Roofing of Rockford compares with the other 9 window installers on ProsGrade in Rockford, using public Google ratings and review counts.
- Has more Google reviews (425) than 7 of the 9 other Rockford window installers on ProsGrade.
Services Covered
5 services- Window replacementDouble-hung, casement, slider, awning, picture, bay, bow and garden styles.
- Siding replacementVinyl in double four, Dutch lap, vertical, board and batten, scalloped and shake styles.
- Door replacementFiberglass or steel entry doors.
- Roof replacementOwens Corning asphalt shingles.
- Gutter installation
Reviews
What customers say
Customers describe friendly, professional interactions and smooth window work. One customer describes an estimate appointment that ran late, followed by an apology and an effort to make the estimate right; another says the window project finished ahead of schedule. One customer reports leaky windows and poor customer service, with the problem still unresolved.
Customer Reviews
Tsipiora Mowers
I highly recommend Felco. I opted to have my gutters replaced ( which were very reasonable) and every window in my home replaced. When getting the estimate there was a mishap with my appointment. I had an appointment at a certain time and I was worried when they didn’t show up on time. Fortunately when someone did show they were extremely apologetic and strived to make my estimate right. He made it up to me and was able to meet a competitors price while factoring in better quality windows. The gutters were installed within a week and windows were installed within three weeks. Everything was done quick, right and very beautifully. I highly recommend Felco for any services they offer. Everyone was very friendly to work with. Take it down. Pictures below are only a few I replaced inside look and out.
Darcy A
Jose came for a quote for new widows in my basement today. Though it was a no-quote situation, based on my smaller windows, it was a joy and pleasure to learn about my options from Jose. I will reach out to him if I ever need other windows on my home. He is a great representative of Feldco and I will recommend this company simply on his expertise and knowledge going forward.
Joelle Merschman
It was great to work with Feldco for our window project. They were happy, friendly professional they went above and beyond to make sure our windows were exactly what we needed. They even came in ahead of time and the project was done ahead of schedule!
march149
From the planning, choices and placement of the windows to the installation, I cannot say enough. Wonderful quality of product. Installers were the best. Their follow-ups were great. I had a durable storm door put on my garage entry door, and it could not have turned out better. I would use Feldco again.
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Frequently Asked Questions
How does Feldco handle window replacement?
A product specialist visits the home to assess needs and measure windows. Installers remove the old windows and install the new ones.
Does Feldco offer financing for window replacement?
Feldco partners with multiple financing vendors, and available plans are discussed during the consultation.
What affects the cost of Feldco's vinyl replacement windows?
Cost varies with window count and size, style, and added features such as double- or triple-pane glass, Low-E coating or decorative grids.