A-Best Window
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A-Best Window
By choosing A-BEST, you're choosing a proven company that has a demonstrated record of quality and integrity since 1985. We have completed work on all styles and ages of homes from historic capes to modern contemporaries. We also have experience in historical preservation. If you're located in the I-95 corridor between Kittery and Augusta, please contact us today to schedule an appointment.

Thanks for your interest in A-BEST WINDOW. We use the highest rated, maintenance free, solid vinyl window according to USP standards and Energy Advantage glass for year round energy savings. A member of our staff will visit your home or business and take exact measurements for a custom-fit. Our windows are professionally manufactured and installed by factory-trained employees.

Not only are my (A-BEST) replacement windows energy efficient, affordable, and easy to clean, they are constructed with some of the best technology in architecture that is available today. I'd recommend A-BEST WINDOW to any homeowner who is considering vinyl replacement windows.
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There are several key questions homeowners should ask potential companies when looking into replacing their windows. What is the grade of your windows? All windows are rated according to performance criteria sponsored by the American Architectural Manufacturers' Association (AAMA). All windows fall within a scale from 15 to 60, based on their test performances.
Thoroughly professional job from estimate to completion. The windows look great and the exterior window trim was very nicely done. An excellent combination of quality and price. I would recommend Jim and his team to anyone. Three floors, 46 windows, five different sizes and the A-BEST team had the job done in an amazing day and a half.
From the moment we take your order until your windows are installed you can count on a professional process with A-BEST WINDOW. A-BEST windows are custom made in Maine at a state-of-the-art plant in South Portland. We use Energy Advantage Low-E glass by LOF - the most energy efficient glass available.
Reviews (16)
Patrick Lucas
Patrick Lucas
Nov 03, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
A-Best team is very professional and knowledgeable. Had 6 replacement windows installed and the crew had it all done in a few hours; which included nice finish/trim work as well. Windows seem high quality and look great. And the crew cleaned up thoroughly after completion. Highly recommend A-Best windows!!
Service: Window installation
Deborah Morneau
Deborah Morneau
Sep 18, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
In 2008 we hired A Best Windows to install replacement windows at our house. In 2021, A Best came back to replace a malfunctioning slide device and all window releases. These windows are 13 years old and look like new. I would highly recommend A Best both for quality and for service. Thank you, Jim!
Service: Window repair
Sue Brown
Sue Brown
Aug 19, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
"Great warranty! Quality windows that we have had for 18 yrs. We received a few tips that will make cleaning easier and how to make them slide up and down easier. Very pleasant service call exceeding our expectations!
Service: Window repair
Steve Eagles
Steve Eagles
Jul 29, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
We bought about 12 replacement windows in 2001 and one of the sash had fogged up and we had trouble with a few after doing the cleaning. The owner came out, explained the problems, showed how to avoid them, made all the windows work perfectly and will replace the fogged on all at NO CHARGE after 20 years. That is Good Service!
Services: Window installation, Window repair
John Murphy
John Murphy
May 31, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
An honest family owned local business that will not sell you a window if you don't need one
Service: Window repair
Melanie Hepp
Melanie Hepp
Dec 31, 2020
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
From start to finish A-Best is very professional!! Quality better than competitors and a much better price!! Saw an immediate improvement with much less street noise and much better heat retention!! Installation was a breeze. Would totally recommend this company!!
Service: Window installation
Renechrista Deschenes
Renechrista Deschenes
Dec 21, 2020
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This place really does great work for a very affordable price. The installers are very quick but detailed and officiant. I would recommend A-BEZT Window to my family and friends any time. Thank you all!
Dirk Kokmeyer
Dirk Kokmeyer
Aug 23, 2020
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I tried to get an estimate for window replacements in a condominium that I own. They came to measure my windows and send an estimate. However, I never heard from them after that despite calling several times and speaking to their representative. I did not even get so much as a courtesy call regarding the timing of the estimate. After nearly four weeks of waiting, I told them they can throw my estimate in the trash.
Caitlin M.
Caitlin M.
Feb 20, 2020
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We got 12 windows installed last week. They were able to install them a month earlier than expected. The price was good (it came to about $450 per window, we did full grids which is $30 per window). Installation was quick and professional. I'll come back to add a star after we've had them for a while if they hold up (it's the middle of winter, so obviously we haven't been opening them, etc.)
Jules Michals
Jules Michals
Nov 07, 2019
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From initial sales call to installation, A-Best did an awesome job. Installation crew was professional, thorough and very detailed as they carefully removed and replaced windows. Result was perfectly placed, tightly sealed, well insulated windows. House was cleaner when the crew left then when they came! And no more cold breezes. And, did it all in one afternoon - outstanding!
Erna R.
Erna R.
Sep 30, 2019
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This review is for the replacement of a window that went bad. I bought many windows through this company years ago. I had one cloud several years later, and they replaced it with very little trouble/hassle, etc. Great!
Dom P.
Dom P.
Jul 05, 2019
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Asked for a quote to install windows and wanted to know how much the windows were to buy them. The owner came and I got both quotes, however my measurements were "supposedly" not correct and THE OWNER would not provide the correct measurements and specs for a formal quote to purchase the windows because he was scared I would shop around which I told him I've already done. How old are we? If you are confident in your products, services, and your business you should do everything you can to earn business not negatively impact it. Lost my business. I recommend paying more for better
Andy M.
Andy M.
Oct 26, 2018
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I bought five windows from A-Best. They were mis-measures, which simply means that they didn't measure a job correctly (first red flag) and so they sell these at a discount. Still, one would assume that if you pick them up from the factory, they'd be decent windows. The first problem with the sliders I purchased was that the top center drooped down a good, solid 1/4". I could live with that, with caulking and flashing, etc. But the real problem was that two out of the five I purchases have very bad leaks.

I called their shop to see if they could help me figure out how to fix these
Dylan C.
Dylan C.
May 31, 2018
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Very unprofessional experience getting a quote with their group. have yet to receive a response to my request for a quote. i had someone come out and measure and then nothing. no response. wont respond to my emails. if they act this way before they even earn your business, i can't imagine what their work is like. do not buy from them.
Crys S.
Crys S.
Jan 24, 2018
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Our windows were installed today. We had a lovely in home assessment done by Lindsey, who was polite and happy to answer questions. The papers drawn up and the deposit (half the total) paid, we were warned it could be 8-10 weeks since winter is a busy time.

Our windows were ready almost 3 weeks before expected and nature only caused a 1 week delay in the installation.

A pair of workers came and had all the 4 windows we were doing removed in short order. The whole thing took only 2 hours. They were polite, efficient, friendly and made sure they worked as cleanly as possible. They left my home
Don W.
Don W.
Sep 22, 2013
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We replaced several of the older windows in our house with new ones from A-Best and they work well. A really nice woman came out to our house, measured the windows, talked about options and told us approximately when they'd be ready to be installed. A neighbor needed some windows replaced too, so she did the same for them. The pricing was competitive and everything was simple.

The windows took about a month longer to make than the original estimate and when they were installed, no one mentioned that they had to change out some wood trim on the outside which needed to be primed & painted