4.5 
662 *The Angi rating for Window And Door Contracting companies in Johnstown, CO 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 Johnstown, CO 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 March 05, 2026
Serving Johnstown, CO and surrounding areas
Approved
In business since 1986
Free estimates
Emergency services offered
"Technician also corrected long standing problem with an original door jamb for the entry door"
+15
Serving Johnstown, CO and surrounding areas
Approved
In business since 2017
Free estimates
Warranties offered
"It was good. They were quick. Very good service. They were on time and professional and I will hire them again."
+95
Serving Johnstown, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2019
Free estimates
Warranties offered
"Absolutely wonderful experience from the first phone call to final installation. Everyone I was in contact with was exceptionally friendly and professional. They were flexible when I needed to rescheduled due to weather. The first person I spoke to when my picture window cracked was the owner. I was a bit freaked out when my window cracked for no apparent reason and he put my mind at ease. I got the sense that he is a very good boss b/c everyone i worked with at Empire thru my glass replacement process genuinely seemed like they enjoyed their job. Which is very rare these days. Highly recommend!"
+20
Serving Johnstown, CO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1992
Free estimates
Warranties offered
"I got some windows from Power and LOVE their work so we ordered 2 doors too. The doors are amazing and they were very professional and courteous during the install. I continue to be impressed by Power and will continue to reach out to them as needs come up."
+24
Serving Johnstown, CO and surrounding areas
Approved
In business since 2004
Emergency services offered
Warranties offered
"The project included windows and doors replacement, exterior trim, and rain gutter installation. Project was done efficiently and expeditiously. Contractors for all work were very hard working and conscientious, concerned to address my needs and questions. Project manager AJ Smith saw an issue that didn’t meet his standards and immediately and personally rectified it. Very pleased with the end result."
Serving Johnstown, CO and surrounding areas
Approved
In business since 2018
Free estimates
Customers say: Quick response
"Worked fast and did a great job. My neighbors had comparable work done but took weeks longer to complete"
+10
Serving Johnstown, CO and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"I would hire Keith again. He did an excellent job with the soffit repairs."
+15
Serving Johnstown, CO and surrounding areas
Approved (Corporate)
In business since 2000
Free estimates
Credit card accepted
"I did my homework before deciding on where I'd buy my windows. Got three quotes; all very reputable companies. Champion (John) gave the best presentation by far! Very knowledgeable, very detailed with window samples and heat indicators to actually show me Champion windows efficiency. Best price, best financing. Now I know where to buy the next set of windows!"
Serving Johnstown, CO and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"The project went smooth from start to finish. They started exactly when expected and ended when as they said. They did a good clean job. Our house looks so good now. The rates were very competitive and I believe we got a great deal! I am getting compliments all the time. It was money well spent. You can't go wrong with this company !"
Serving Johnstown, CO and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"This company is very professional and skilled in their work. They work diligently and address every detail for an extremely satisfying result. My wife and I highly recommend them."
+20
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