4.5 
697 *The Angi rating for Window And Door Contracting companies in Frederick, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window And Door Contracting needs.
*The HomeAdvisor rating for Window And Door Contracting companies in Frederick, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window And Door Contracting needs.
Last update on December 17, 2025
Serving Frederick, MD and surrounding areas
Approved
Super Service Award Winner
In business since 1997
Free estimates
Warranties offered
"We had windows and doors installed. Installation went smoothly, and customer service was outstanding."
+27
Serving Frederick, MD and surrounding areas
Approved
In business since 1997
Free estimates
Warranties offered
"I highly recommend Clifton Contracting. The owner and all his employees are great to work with and did an excellent job installing my egress window. They even worked with me to take care of some other home to-do's on the fly. I would happily use them again."
Serving Frederick, MD and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Excellent job in installing windows and bow window at my lovely home. It looks beautiful and we are very happy with the results. Thanks"
+72
Serving Frederick, MD and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
"I was very happy with response from Eddis. He gave me a quote upfront and followed it up with an invoice via email. I paid him half at the beginning and another half when he came back to install the window. He was very professional and respectful of my house. I will definitely use A.R. Glass again if I have window repair needs."
Serving Frederick, MD and surrounding areas
Approved
In business since 1995
Free estimates
Warranties offered
"Nova Exteriors did a fantastic job on our windows. Tom came to give us our estimate and walk us through the various products they provide. He did a great job at answering our questions and showing us what our options were without being in-your-face-buy-my-product sales guy. The team that came and installed the windows did an amazing job. They were in and out in half a day. We had five double hung windows installed and one massive picture window. They were courteous, on time, and cleaned up inside and outside when they were done."
+18
Serving Frederick, MD and surrounding areas
Approved (Corporate)
In business since 1976
Free estimates
Warranties offered
"Whiting was there when others contractors either dropped the ball or wanted to milk me for tens of thousands of dollars more. The Whiting Company offered a fair and competitive estimate, worked with me on my (often delayed) schedule and did the work to the finest standards. I am so happy I tell my neighbors about The Whiting Company, and their good work."
Serving Frederick, MD and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Arrived on time and work exceeded my expectations."
Serving Frederick, MD and surrounding areas
Approved
In business since 1991
Free estimates
Warranties offered
"Door Repair - They did excellent work--fast and efficient. They found a solution where I thought there was none."
+30
Serving Frederick, MD and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1992
Free estimates
Warranties offered
"A wonderful experience all around! We had 15 windows and a sliding glass door replaced. Our Salesperson, Harlan, was very professional and explained the benefits of the new windows and all about Power as a company. The installers arrived on time and completed the entire job in a day! Everything was installed perfectly and the crew was courteous and cleaned up after themselves. Erin came to visit the next day to make sure everything was up to their standards and addressed any questions we had. Most certainly the best experience we've ever had with a home contractor. Highly Recommend!"
+24
Serving Frederick, MD and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"The guys from Home Genius (Gabriela mena and her partner) the installers were very thorough and knowledgeable. My new windows look amazing. I’m glad to have chosen this company for my windows."
+78
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