4.3 
78 *The Angi rating for Window Service companies in Cortland, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.
*The HomeAdvisor rating for Window Service companies in Cortland, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.
Last update on May 10, 2026
Serving Cortland, IL and surrounding areas
Approved
In business since 1957
Free estimates
Credit card accepted
"Very efficient! Came on time. Returned with finished cover as promised. Great advice as to maintaining upkeep of window as also the well. Thank you!"
+9
Serving Cortland, IL and surrounding areas
Approved
In business since 2022
Free estimates
Warranties offered
"Weber’s Windows did an excellent job!!!"
+26
Serving Cortland, IL and surrounding areas
Approved
In business since 2010
Free estimates
Warranties offered
"F and A did a fantastic job cleaning our windows and doors! The communication was great, they arrived on time and cleaned every glass surface, sills, and screens until they looked almost new. It was wonderful to walk into the house and see the sun and plants through sparkling clean windows. We will hire F and A to clean our windows every spring!"
+31
Serving Cortland, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2001
Free estimates
Warranties offered
"The windows were as we expected. We can now feel the effectiveness of the windows in terms of insulation from outside cold."
+20
Serving Cortland, 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"
Serving Cortland, IL and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 2007
Free estimates
Warranties offered
"Renewal by Andersen of Wyoming did an incredible job with installing windows in our home. Thank you to the team who did the install and to the company for creating these exceptional windows."
+2
Serving Cortland, IL and surrounding areas
Approved
In business since 1996
Free estimates
Emergency services offered
"Spectacular job on the windows. Cleanest they've EVER been."
+58
Serving Cortland, IL and surrounding areas
Approved
In business since 1996
Free estimates
Emergency services offered
"They also cleaned my windows"
+85
Serving Cortland, IL and surrounding areas
Approved
In business since 2005
Free estimates
Credit card accepted
"We have once again reached out to Joe Kim at J & K Home Improvements when we had a new project planned. We were completely satisfied when we replaced our siding and roof with Joe. Now Joe and his professional crew have replaced all our windows . There are never surprises or additions from when the job is quoted. Once again we are totally satisfied and delighted with their work!! It has been a stress free experience each and every time."
+2
Serving Cortland, 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!
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