Read about our great service on Google.com, Yahoo/Yelp, Angie's List, Checkbook.org, BBB.org

Current Testimonials

About Tech Randy - "Randy was outstanding!"

William, Saint Charles

About Tech Randy - "Cornerstone has always been our go to, very professional and reasonable prices"

Mike, South Elgin

About Tech Randy - "The repairman who serviced us was the best ever to work in my home He went above and beyond the expected A true Christian man who treated me very fairly absolutely would call for service again and hope he is assigned to my call Thank you for all "

Barbara, Elgin

About Tech Randy - "I was very impressed with your service. I’ll call you again when needed and will refer you to friends in need. "

Kathleen, Saint Charles

About Tech Randy - "Randy did a great job working through the symptoms and the issues."

Joel and Linda, St. Charles

About Tech Randy - "Very happy with the service on my oven from Cornerstone. Randy was professional and honest. He did a great job and would not hesitate to recommend him to family and friends."

Silvia, South Elgin

About Tech Randy - "This was very professional and the tech was nice, thoughtful in his explanations and got the job DONE! Thank you!"

Katie and Ted, West Chicago

About Tech Randy - "Very satisfied."

Scott, South Elgin

About Tech Randy - "Randy’s 2nd visit. Both times he made repairs with parts he had on hand when other tech’s would’ve insisted on a more expensive replacement. Randy is an asset to your company; dependable, personable & knowledgeable. We will recommend Cornerstone."

Theresa, West Chicago

About Tech Bob - "All your personnel are excellent. Your service has been the best for all the years we've used your services. "

Bernd and Claudine, Elgin

About Tech Bob - "This was the best service experience I've ever had. I saw the truck at a neighbor and called the number on the side. Within 5 minutes that technician was in my house to fix my oven. Many people will hear of this fun story. "

Michael, Elgin

About Tech Randy - "Our technician did a very thorough job checking all possible sources for the leak from our dishwasher. I was very happy that he made no assumptions before recommending the necessary steps to repair it. "

Mike and Megan McGarr, Elgin

About Tech Bob - "Recommended by another company I use for work since they don’t travel out by me, so glad I called. Very professional, and friendly. I will definitely use again in the future and will recommend to others! "

Cindy, Huntley

About Tech Bob - "Very professional and knowledgable. Everything works great."

Laura and Joe, Bartlett

About Tech Bob - "Bob was very helpful in explaining what went wrong with our ice maker which was 19 years old. He had replaced our ice make with a new one and its working great. He also answered some concerns about my front load washer. He was very helpful."

Sue, Elgin

About Tech Randy - "Very prompt. Very respectable and courteous. Excellent job. Cleaned up everything afterwards. Would highly recommend and will use in the future. "

Richard, Saint Charles

Survey Results

 Timely     4.94 out of 5
 Appearance     4.92 out of 5
 Courteous     4.94 out of 5
 Customer Felt Safe     4.94 out of 5
 Repair Explained     4.92 out of 5
 Cleaned Up     4.92 out of 5
 Cost     4.73 out of 5
 Would Use Again     4.87 out of 5

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