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Best window pros near Harwinton, CT

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TRUSTED BY HARWINTON, CT HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon186
    Verified window services reviews

Top-Rated Window pros in Harwinton - Updated Nov 2026

Avatar for Action Windows & Siding LLC
Action Windows & Siding LLC
4.6(
30
)
New Windows - 6 +New Windows - 3-5New Window - Single+9 more

Serving Harwinton, CT and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"I cannot say enough positive things about Action windows. From the informative and non-pushy sales person to the incredible installation crew, it was a very positive experience. The price for the high quality windows was very competitive and fair. The installation crew was on time and very considerate. I work from home and they really worked around me. The cleaned up everything"
CCSU
Arch Windows
Specialty Windows
Commercial Windows
Conservatory in Avon

+7

Response time2 days
Response rate100%
10 neighbors recently requested a quote
Avatar for Valerie Spencer Interiors LLC
Valerie Spencer Interiors LLC
5.0(
90
)
Hardware, Latches & Tracks (Window) - Repair or ReplaceWindow Frame - RepairWindow Well Covers - Install or Repair

Serving Harwinton, CT and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"Great!! Brian accomplished a very professional job on door lock and window shade installations. Very efficient and pleasant to do business with. Offers such a wide variety of handymen services, I would definitely consider his services for other projects as well. Nice workmanship!"
Additional Photos
Additional Photos
Response time1 day
1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for DiGiorgi Roofing & Siding Inc
DiGiorgi Roofing & Siding Inc
4.6(
202
)
New Windows - 6 +New Windows - 3-5

Serving Harwinton, CT and surrounding areas

Approved

In business since 1933

Free estimates

Emergency services offered

"Everything from first contact with the office staff to set up the appointment to when the installers left was a completely positive experience!
Office schedulers found us an evening appointment around our work schedules and were very friendly.
Al Vestro, our salesman, contacted us prior to arrival, and even showed up early once checking if we were available.  He carefully went over the options, and didn't try to "upsell" at all.  He explained that a higher sun-filtering glass was available, but generally not needed in New England.  Also mentioned the option of "divided lites" to go on the outside of the window to retain the original look of the sash bars, and advised if we had a historic home it would be required but since we had just a "normal" home, it would mean more difficult cleaning without a lot of real difference in look.  I appreciated his honesty in showing the options without the hype to sell the more expensive options.  He recommended the best option for our home and neighborhood.  Also, there was no pressure to sign the contract right then and there.  He provided the estimate at the time of the inspection and then left it up to us to decide and get back to them if we wanted to proceed.  He also explained the financing options with their financing company and we opted for the one year same as cash option so we didn't have to write a check for the deposit.  Much easier option! Al estimated 8-10 weeks between when we signed the contract and when the windows would be installed.  This put us at about a week or so after Thanksgiving.  Not ideal, but we wanted them in for the winter.
Once we signed the contract, David DiGiorgi called and set up the appointment to measure the windows.  My husband was home that day, and said he was very punctual, friendly and professional.   
David called earlier this week and said the windows were ready and set up a day for the installation - which was today.  Nov. 6th, at least  three weeks earlier than expected!  it couldn't have worked out better, considering we are having a warm spell with temps in the 70's today (New England, early November - go figure!)
 
We were told the installers would be at the house at 8:30.  The first truck arrived at 8:20 and all the installers were on site by 8:30.  We took care to move things away from the windows before they arrived so they could get right to work.  I did not take things off the walls because we were told we would not have to.  But they had to do some heavy deconstruction work to get the old windows out and the guys took the collectible plates off the dining room walls so they wouldn't fall and break.  I so appreciated that care and thoughfulness.
They started the actual work around 8:45 and were done installing all 9 windows by 1:00.  They cleaned up everything, and other than a little dirt on the kitchen counter, and of course the new windows, you would not have known we had any work done.  It was spotless - cleaner even than it was when they arrived!
While it is very early to really judge if they are sealed well, we carefully looked at all the windows and can see no gaps in the seals.  
I am more than satisfied with the whole experience with DiGiorgi.  They may not be the cheapest contractor out there, but I found their customer service and workmanship to be top notch.  I will definitely use them again when it comes time to replace the other 9 windows and the roof.  And I have no hesitation recommending them to anyone looking for quality products and workmanship, and professional, easy to deal with people for their next home improvement project.
"
Additional Photos
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+33

Response time3 days
Response rate100%
21 neighbors recently requested a quote
Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
122
)
Door or Window Screens - Install or RepairEgress Window - InstallHardware, Latches & Tracks (Window) - Repair or Replace+10 more

Serving Harwinton, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

Based in West Haven, Connecticut, our team has provided an excellent, affordable service to more than thousands of houses over the years. We are committed to supporting our customers throughout the evaluation process, during the service itself and are available to answer any queries once the work is complete. \nWe are a licensed and fully insured company aiming to respond to all requests involving our services within 24 hours or less. Our professional and knowledgeable staff have a combined experience of over 12 years within the construction, air duct cleaning, and landscaping industries, ensuring guaranteed satisfaction with every job. \nWe pride ourselves in providing a safe, hazard-free environment and maintaining respectful, cordial communications with all of our clients. All technicians can be relied on to keep project sites clean both during and after the work is complete. \n

Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1839

Response time1 day
Response rate92%
Recommended by85%of homeowners
Avatar for Dels Window Cleaning
Dels Window Cleaning
5.0(
5
)
Window Cleaning

Serving Harwinton, CT and surrounding areas

Approved

In business since 2022

Free estimates

Offers commercial services

"In the past, I have cleaned my own windows. This is the first time I have used a professional window cleaner, and I was a little nervous about how the windows would turn out because Iâ  m pretty fussy. I am so pleased with Delâ  s Window Cleaning! They were easy to reach, responsive, punctual, professional, and they did a great job. Will definitely use them again. HIGHLY RECOMMEND."
Window cleaning
Window cleaning
Window cleaning
Window cleaning
Window cleaning

+16

Response time30 mins
Response rate100%
Recommended by100%of homeowners
Avatar for Advanced Window Systems, LLC
Advanced Window Systems, LLC
5.0(
4
)
New Windows - 2New Windows - 3-5New Windows - 6 +

Serving Harwinton, CT and surrounding areas

Approved (Corporate)

In business since 1997

Free estimates

Warranties offered

"Over fifteen years, I originally met him for window install estimate, and we have been using him ever since for several of my properties! He is quick to respond to any necessary repairs and emergencies, should you have them come up!"
Replacement Windows
Replacement Siding in Oakville CT
Replacement Entry Door
Replacement Roofing in Enfield CT
Replacement Shower & Bath

+61

Response time1 day
Recommended by33%of homeowners
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Windows FAQs, answered by experts

It’s time to replace your windows if most or many are in poor shape. In that case, new fiberglass windows will increase the energy efficiency of your home and add to its overall visual appeal, inside and out. Replacing your windows also can allow you to find a style that better suits the character of your home.

Constant fixes can be expensive over time, and by replacing your windows, you can be at ease knowing you now have windows that function properly and make your home more energy-efficient.

Yes, you can fix windows without replacing them. However, this will depend on the severity of the issue and what your needs are. Minor water damage, broken glass, damaged casing, and worn caulking are usually easy repairs. But if there is excessive damage, the windows are constantly foggy, or the windows are very old, it’s best to consider replacing them. Replacement windows cost between $575 and $1,475 per window, or an average of $850 per window. 

Options include interior, exterior, and double-pane storm windows. Choose based on needs and preferences.

Yes, including the frame instead of just referring to the glass opening for window dimensions is the standard. However, some manufacturers may refer to the rough opening instead of the framed opening when listing sizes. Always confirm which measurement a manufacturer is using before ordering windows.

Replacing basement windows can be worth the cost if replacement is necessary. If your windows are leaking and leading to water damage in your basement, it’s absolutely worth replacing them. Similarly, if your basement windows are no longer insulating your basement or pose a security risk, you need to replace them.

In some cases, you may be able to save money by repairing a window instead of replacing it. A contractor can help you decide the right course of action.

The Harwinton, CT homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.