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Typical your area range for this kind of work, from regional averages — not a quote from Advanced Window Systems. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,000 – $11,000
Typical exterior project around $7,500
Advanced Window Systems is a replacement window, door and bath company at 14 Alcap Ridge in Cromwell, Connecticut. The company's site says it has been in business 40 years and pairs its exterior products with professional installation and warranties, and the Better Business Bureau lists windows of every common style, doors, siding, shower replacement and tub-to-shower conversions. The courant.com ran a Top Workplaces piece on the company. Its Connecticut home improvement contractor registration HIC.0556507 is active, held by ADVANCED WINDOW SYSTEMS LLC. Google shows 4.9 stars from 959 ratings; Angi and HomeAdvisor each show 5.0 from 3, and Houzz 5.0 from 2. Whole-house window jobs done quickly are what the recent reviews describe: a February 2026 review says Edison and his team installed 27 windows between 8am and 5 pm, a September 2026 review counts 19 windows in 2 days, another 20 windows in two days by a crew of four, and an October 2026 review says a 1905 home's install planned for 3 days was finished in a single day with the trim kept and the grids matched to the old windows. An October 2026 review of 14 windows and two exterior doors calls the job expensive but worth it under the lifetime warranty. Rafal is praised as a one-man installer in September and October 2026 reviews, and bath work shows up too, with an August 2025 shower installation and an October 2026 walk in shower sale by Zack, a repeat customer. The complaints are about follow-through before and after the job. A September 2026 two-star review says the customer paid $2,000 more than competitors on a salesperson's promises, and after he left the company several promised items were not done. A July 2026 four-star review says the company kept rescheduling appointments before the consultation, and an April 2025 one-star review says an estimator never showed for a siding estimate. A December 2021 Reddit comment says the company was 4 months out.
“Give Advanced Window Systems a call, they did my parents very large and very old (1825) farm house with 56 windows and it was very reasonable and quality work.”
“Advanced Window Systems has the highest rated reviews online, they install the most energy efficient windows on the market for a similar price to most contractors while maintaining a lifetime warranty”
“Advanced Window Systems has the highest rated reviews and they provide the most energy efficient windows for a price close to contractors while maintaining a lifetime warranty”
“Check out advanced window systems in cromwell.”
“When it came to my parent's house it was 56 windows on a house built in 1825, which does not make a contractors job easy yet they did a great job. Going on 5 years or so now with zero issues.”
“Top Workplaces: At Cromwell's Advanced Window Systems: 'You matter, and what you have to say matters.'”
“Chief of Cromwell’s Advanced Window Systems:”
My salesman Adam was excellent explaining everything in detail for shower remodel the installers did a great job.
Zack is y very personable and professional person. He presented all the options and what would work best with our situation in getting the walk in shower. We had him before when we replaced our windows and definitely because of how well that experience was we once again chose AWS
Edison and his crew did an outstanding job. The craftsmanship and attention to detail was out of this world. The crew was courteous and respectful and cleaned up the job site spotless. Edison and his crew worked like a fine time piece. They never stopped and never missed a beat. After the job was done, Edison brought me around to every aspect of our job and and explained all of the mechanics of our doors and windows. As for pricing, it was expensive but you absolutely get what you paid for and we have a lifetime warranty on 14 windows and two exterior doors. As for timing, Alec came at precisely the time he set up within a week. We had our measurements done in five weeks to the day. All of our items were delivered to our house, set up and completed in two days unbelievable. I would not hesitate to recommend this company to family and friends!
We had half the windows replaced on our 1905 home to improve energy efficiency. The install was originally anticipated to take 3 days but the team powered through and efficiently finished in a single day! The house was left clean and all of our trim was maintained which was important to us. The new windows also were able to match grid pattern from our previous windows so they blend in with the windows that we are keeping. Overall very happy with the purchasing process with Aleks and the installation process with Edison and Team.
Rafal was a one man show! He was so conscientious about his work and took his time to do a perfect job! His insulation looked perfect to me and it still was not good enough for him. He had to go and make it better looking. He knew so much about the product. And walked me through everything as he installed it.
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1 change recorded — last scanned Oct 14, 2026.
Roofs replaced in a single day4.9
One-day roof replacements5.0