Our goal is to provide top quality service and products to our customers throughout Denver and the Front Range.

Here is a small sample of what our customers have to say.

A. Petrucci

Highlands Ranch

Dario and the Pinnacle team helped us through a very long and drawn out negotiation period with our insurance company. They answered all our questions and patiently helped us throughout the process. When we ran into hiccups or concerns, they took the time to listen to us and do their part to make things right. I would recommend Pinnacle to my friends and call on them again.

D. Scalise


Quality work. Had a slider and another large door with large side window replaced plus inside trim removed and replaced. The men were very careful and did an amazing job.

J. Woodhouse

Colorado Springs

Great experience with Pinnacle! We thought the job would be delayed until the Spring but they managed to replace our windows before winter really hit. The quality of their work is superb and the windows themselves are top quality! I would highly recommend them - they were the one bright spot during our ordeal in getting are home back after the hailstorm.

J. Noel

Colorado Springs

I was very pleased with Pinnacle Windows' work on my home. The staff was very courteous and professional through the entire process. The crew did an excellent job of replacing my windows and patio door. I am pleased with the products and services Pinnacle provided and I will highly recommend Pinnacle in the future.

B. Williams

Highlands Ranch

We experienced a significant hail storm early last summer. We had 23 windows replaced by the great team at Pinnacle. Dario and his crew always showed up when they said they would and did what they said they promised. The process was smooth and any minor bumps along the way were resolved quickly and without incident. The result. Beautiful windows, warm house all winter and noticeable energy savings. Hope to never have to do it again, but if so, I'll not hesitate to call Pinnacle and Dario. Thanks.

L. Barrett


The sales process and install were both very easy and professional! These guys are the best in the industry, I would highly recommend them! My sliding glass door fits perfectly thanks to these guys... if you are looking for a company that wants to make the process simple, yet of the highest quality of work and products... look no further!!

Jim S.

Colorado Springs

Crews were outstanding. Job was done very well.

Sandy Z.

Castle Rock

Bre Lujan was very diligent and kept us well informed throughout the process. The install team (Anthony and Adrian) were courteous and professional.

Mary A.

Highlands Ranch

Pinnacle has outstanding customer service. I was so impressed of how timely everything was. Brea was really helpful and made follow up phone calls when needed. The main installers (Victor and his brother) Twins were outstanding. Very neat and detail oriented. You felt comfortable having them in your home.