Andy and Matt from GTWD put in 18 windows for us and we couldn't be happier! These are beautiful windows! Ours were 30 years old and boy they looked like it! We are so happy with the whole process! Andy made it seamless! We couldn't be happier! read more

See all

I am so happy with Andy and his team from Green Technology Windows and Doors. I originally chose Home Depot to replace my 11 windows and patio door but I bailed due to miscommunication and misinformation from their end. I was very relieved when I called Green Technology and met Andy. He was honest with pricing, timing, and options and did not rush the process or upsell me. Andy is a knowledgeable professional who cares about the quality of his work. I would encourage anyone with window or patio door needs to reach out to Green Technology Windows and Doors. read more

If I could give them 10 stars I would!! I got 8 windows and 2 sliding doors and they look better than expected!! They were very professional and their cleanliness was top notch! If you are looking/interested in getting windows or doors I recommend using Green Technology! read more

See all

I needed two sliding doors and two bedroom windows replaced that were 34 years old. I called several places for estimates and got extremely high ones or no response at all. After choosing GVDW, BJ and his team arrived on time and got to work and were so nice about moving stuff out of the way. When they were done, they cleaned up and put everything back and now I have beautiful doors and windows. Now I'm saving for them to replace the remaining windows in my house. read more

Andy Reszka from Green Technology Windows and Doors was great! From our first meeting he was professional and easy to talk to. We weren't sure what we wanted and Andy walked us through all the options answering our many, many questions. We got quotes from other companies but Green Technology Windows and Doors offered a really fair and competitive price. When it came to installation the crew was on time and cleaned up everything when they were done. Our new windows look absolutely beautiful! Our house feels brighter and more comfortable already. As mentioned before from the quote to the finished project Andy took time to patiently explain and answer all our questions which made our window replacement project easy and stress-free. We would recommend him, his team and Green Technology Windows and Doors to anyone. Truly a five star experience from start to finish. read more

Great amazing work !! From start to finish .. They explained everything before during and after .. No pressure to buy all questions were answered .. very comfortable process !! Very impressed and satisfied !!! Thank you so much !! read more

See all

A late update on this initial but needed to be done. I had another person respond to my query and promptly and courteously came over to measure my windows and sent over quote. It was annoying that he kept calling me by another name, forgot my information, or the insistence that I purchase a type of window like the other man that came before him. They do offer cheaper windows but you are ultimately the person paying so you decide the windows that come with guarantees and coverage. While I have decided to put a pause on the window replacement I am thankful they responded and sought to make amends after the disastrous first meeting. Thus, the improved review. read more

Very good Work. Clean and professional work. Will be giving them five star reading. Recommend green technology windows whoever needs windows. read more

Fairly priced and customer service was excellent. Andy came out and measured my windows and they were ready for install after 4 weeks. Installation was swift and windows/patio door looks beautiful. Highly recommend them! read more

Thank You Green Technology Windows. This is one of those Yelp reviews you can't wait to leave. It's been 1 month since we've had our installation and I could not be more grateful that we chose to go with Green Technology . The team of 3 included his son , and 2 other installers who were professional, courteous and timely. They cleaned up afterwards and did not leave any hazardous materials left behind for anyone to accidentally run over . Thank You Andy and Team !! read more

Green Technology Windows & Doors - Windows Installation Near Me

The estimate was fair and Andy was helpful, but they wanted around 50 percent up front for a deposit and California law is 10 percent and not to exceed 1000 dollars. I didn't end up working with the company due to this. https://www.cslb.ca.gov/Resources/IndustryBulletins/2022/Industry_Bulletin_Progress_Payment_Restrictions.pdf read more

Needed my sliding door replaced and GTW was responsive, affordable, and the entire process from start to finish was very easy. I have 3 dogs and needed the door to have a doggie door. It is the perfect addition! Definitely recommend this company! read more

Andy and his son Gabriel did an amazing job replacing our 6 kitchen full size windows. We were referred by a friend who was happy with their work and we're very happy with the experience we had. First, Andy came over twice and provided sample windows and gave suggestions and went over all the details and what to expect (things I didn't think of like the house alarm and how the tint options available). The quote was reasonable but in truth I did not compare to very many other contractors. Their measurements were perfect and installation went very smooth. I was impressed at how quickly and accurately they completed the job. Very pleasant and easy to deal with - no complications or surprises. Highly Recommend!!! 10 out of 10!!! read more

Communication was easy and they did a great job. Price was fair and as quoted. No surprises.

Unbelievable service from start to finish. Quick response to request for estimate, explained our options and communicated effectively during the process. Installation was seamless with on time arrival, installation and clean up. Would definitely recommend to anyone needing replacement windows. Thanks guys!!! read more

Andi at Greentech Windows did 6 windows and a sliding door for my house in Stockton. He was very professional and explained many options for an my old house that needed an update. The installers were fast and efficient. The windows look great and the prices were amazing compared to what I expected to pay for the quality and service. Thank you! read more

Had my sliding patio door replaced, Matt and Gabriel did a great job, clean, and affordable. I highly recommend these guys for your patio door replacement. read more

Green Technology Windows & Doors - Before - Windows Installation Near Me

See all

from the time I first called I am very pleased my new slider was put in today exactly the time I was told .... Andy was great and very professional I'm so sorry I didn't get the other man's name but again focused and very professional ... I need more work done and I will definitely call them again . thank you so much read more

I don't even know where to begin, from the first phone call to the final clean-up, GreenTech was top notch! Andy was professional yet personable during his estimate and gave me a real strong bid. When I chose to go with GreenTech, it took about 4 weeks for the windows to arrive. Andy set up the date and time with us and we were off and running. Andy's son Gabriel and his team did the installation and they did a fantastic job. 12 windows in all and what a huge difference in appearance as well as insulation. Gabriel was very knowledgeable and patient and answered all of our questions along the way. They were in and out and our home looks beautiful! Thanks to GreenTech, I highly recommend them if you are looking for window replacement. read more

See all

When needing to replace some 36-year old windows, we got four estimates. Andy and Green Technology came up with a good price for high quality product. He was always prompt and efficient and stayed in touch with us during the process. We love our new windows! They are beautiful and more energy efficient. read more

We have a rental property in Valley Springs. We live in the Bay Area. Green Technology Windows & Doors were the best. Andy is very helpful and even had his associate, Matt, bring window samples to our home in the Bay Area. Job was completed in two days as promised. Thank you GTWD read more

I reached out to Green Tech for a quote for the windows in our house (11 including a sliding door). We already had other quotes from more well-known companies. Andy responded right away and we had a quote within the week. He gave us options and didn't push or try to sell us either. Had great customer service! When installing the windows, the team did a phenomenal job. They spent a fair amount of time for each window and ensured quality work, but was also able to complete the job in a day. They cleaned up afterwards and Gabriel made sure we were happy with the work and should there be any issues to contact them or the window manufacturer (which we have a lifetime warranty for). Overall, we are so happy with our decision to go with Green Tech. Thank you Andy and team! read more

Very unprofessional!! Needed an estimate on front window replacement never got one, had his clipboard with estimate paper in hand, then says I'll call you later.What??? I'm a 66 year old woman ,very strange I'm thinking they are scammers. Only showed window from outside. Then just left after handing me his card. Bye...it's actually a 0 star not a 1 read more

First of all this was a big job to do, but Andy and his crew did a wonderful job 17 windows they was COVID really it only.took two days and the job was done they clean up after the job and the windows fit and look great made our home look new again. This is a great company to do business with they talk you through every step and was very honest and at a very good price this is people you can trust. Great job done read more

See all

GTWD was the last company I called for an estimate to replace 11 windows plus a sliding patio door. The previous estimates ranged between $25,000 and $40,000. The appointment process for the other companies was cumbersome and included contact with multiple persons before talking to the person who would provide the estimate! When I called GTWD, I spoke to the person who answered my call and the next person was the sales person, Andy. Andy came the very next morning! He provided me with product information, never tried to sway my decision but he brought window samples, the only one to show me samples, so I could make an informed decision on which windows would work best for me. The other companies told me it would be at least 6 weeks before they could begin working on building windows for me. GTWD had my windows built andb installed in approxitmatly 3 weeks. The installers were professional, courteous, respectful and went out of their way to be helpful, moving furniture, replacing it to its original location and cleaning up behind themselves. Their cost was reasonable and less than half of my lowest estimate from the other companies. I highly recommend them to anyone looking to replace or install new windows. I am very happy with my new windows. read more

If you need windows and GTWD services your area look no further! I got quotes from Home Depot and Lowe's and a local contractor and GTWD prices We're lower and the quality of the workmanship and professionalism Can't be beat.. I plan on having GTWD install windows at my mothers house and mother in law's house very soon.. if you need windows contact GTWD you won't be disappointed! read more

See all

We are doing a new construction project in Belmont and have interviewed and hired many contractors for architecture, general contracting, tile work, flooring, and more, and Matt from Greentech has stood out as the most professional and helpful of all of them. We have had many issues with the framing and window ordering and despite none of these being Matt's fault, Matt has been incredibly helpful and solution oriented, often times making of for the mistakes of our GC. From suggesting ways to waterproof a window that couldn't be mulled or how to fix windows that didn't open right to exterior finishing ideas for the entry door, Matt was always providing solutions to problems he didn't create. You can't ask for more than that as a home owner. In addition, Matt's crew was very professional and on time despite having to leave at 6am to get through traffic to get to our jobsite. Unlike the workers from our GC, his guys had proper, professional equipment (including safety equipment!) that gave us confidence that he was doing the job right from start to end. And last but not least, Matt's prices were very competitive. He could have charged us extra for having to come back to our jobsite two extra times because of issues that were not his fault, but he didn't. In a big project like ours, there were some contractors I dreaded talking to, people who the very thought of talking to would raise my blood pressure. Matt was the opposite as every time I talked to him he came up with solutions. I would fully recommend him and his team to anyone. We even tried to hire him to install our interior doors but he was too busy to take the job :). read more

See all

Ok So I needed new windows for my home I put the word out on Facebook and This company kept popping up.. So I set up a quote After dealing with Renewal by Anderson, Lowes and Homedepot.... Andy came gave me the best quote and more importantly the best time frame of 5weeks... Everyone else 3 to 6 months... I'm glad I chose these guys Everyone was professional the kept my house clean while working and even when a problem arose with one of my windows they would not except final payment until Everthing was fixed and I was Happy and that went along way in my book... these guys are the real deal if you're in the market for new windows you won't be disappointed with Green Technology Window and Doors. read more

Green Technology Windows and Doors installed 6 new vinyl windows for us and they did a great job and very reasonably priced. They are dependable, reliable from Andy coming out to measure windows to Gabriel and his team quickly installed windows and left no mess behind! I definitely would recommend them and give them 5 stars Thank you, Andy, Gabriel, and guys! read more

Stop Yelping and Googling. Call these folks if you want honest trustworthy perspectives, reasonable pricing and a thoroughly professional work crew. I called a bunch of different places including those who stuff the Valpak envelope with coupons, do gimmicky infrared bulb sales shows, and offer fake discounts. The stories, the spin, and even lies from others were nauseating. Enter Matt from Green Technology Windows. No hardball or sleazy sales stories. Just good "old fashioned" reliable care and craftsmanship! I think you can't go wrong with these folks. Unless you really enjoy overpaying, or being entertained by infrared light shows read more

Great experience, the owner was prompt in responding and quick to come out for an estimate. I waited a few months and called back, he remembered me and we talked about moving forward with the order. The installation was quick and they were professional and clean. Definitely would recommend this company and would use them again. read more

Great experience with Green Technology windows. Contacted them via their website and got a call the next day from Andy. Andy came out that very same day to take measurements on two bedroom windows. We didn't really know what kind of windows we wanted but he suggested we go with windows to match our front living room window. Got a quote the very next day for less than we had originally thought it would be! Andy came by again to review the contract and collect the deposit. He told me it may take 4-6 weeks for the windows to arrive, but most likely 3 weeks. Sure enough, 3 weeks later Andy is back and has the windows installed in 1 hour and 15 minutes! Absolutely no mess left behind. The windows look great. We are currently having some other parts of our home remodeled and I can only wish the other companies I have been working with were as efficient and easy to work with as Green Technology. read more

Green Technology Windows & Doors - Windows Installation Near Me

See all

Andy and his son were awesome to work with when they replaced our old windows and sliders last year. His son was very professional, hard working, and thorough. The team cleaned up all the mess and were very courteous. The windows have been working great and I would definitely recommend them for your window needs! read more

Andy and his assistant are awesome. They did a wonderful job fixing our window that someone else had installed incorrectly. It was a tricky case, but they made sure the job was done right. Very responsive and absolutely reliable. Highly recommend!!! read more

Greatest experience remodeling my house so far. Matt came to my home , gave an estimate a few days later . After he ordered the windows "almost all custom " two weeks later he had a full crew at my house replacing 16 windows and 3 sliding patio doors. He gave a great competitive quote for triple pain windows. Highly recommend GTWD for a great job and competitive cost. read more

I requested a quote to replace our windows to several companies. Andy was the one how took his time not only to give us a quote but also to explain all our options. Few weeks after ordering the house windows they came to install. I was very skeptical to replace my windows during COVID. The installation team was really clean, fast and professional. I really appreciate the fact that after they completed the job they did a walk around and double check with me if every window was ok. I also received a call from Andy the same day to check our satisfaction. We really love the windows, I wish we changed before. Really really good customer service and high standards professional work. read more

Hired this company to replace all the windows and sliding doors in our 1970's home. Prices were very competitive, the owner is very responsive, and he and his team were absolutely professional. As in any big project, there were a couple issues but they brought them to our attention immediately and took care of them without up charges. Would hire again in a heartbeat! read more

The house we bought was built in 1980 and the old single pane windows wasn't energy efficient at all. We chose Green Tech Windows & Doors because of the many positive reviews they have and also Andy gave us a good deal on the Milgard windows and doors we wanted. We had to wait a few weeks for the windows to arrive because it was a custom order. Gabriel ( Andy's son ) and the crew came out did an awesome job. They were true professionals. We are another happy customer. Thank you Andy and the team! read more

See all

If you're looking for new windows, look no further! Andy and his team are absolutely phenomenal. Not only are they extremely punctual, but his team runs like a well oiled machine to make sure the timeline he provides will be adhered to with little exception. Unfortunately for me, when they went to install my new sliding glass door they found the wood had rotted out thanks to bad drainage of the patio. They spent the next few hours fixing this with very little added cost to me, were very apologetic about the extra time it was taking even though it wasn't their fault, and then explained how we could fix the drainage issue! They really go above and beyond, and you won't meet a group of more genuine and skilled men. If you have pets, you really want these guys to be the ones to install your windows. They were more than happy (closer to insistent!) to help me setup a plan to insure the safety of my cats, and before beginning any work double checked to make sure I had them safely locked up and went over the plan one last time. When it came time to move the cats into a finished room to start work on the other side of the house, they stopped all loud work to help keep the cats as calm as possible during the move and even asked how they were faring throughout the day. The safety of my animals is paramount, and I'm grateful it was to them too. They were very efficient in their work, and completely cleaned up after themselves. They even went so far as to clean up the small amount of wood dust left on my lawn after repairing the rotten wood issue! Andy managed to work within my budget and got us some amazing triple pane windows; the house has never been so quiet and the A/C run so little on a 100+ degree day! So in summary, do yourself a favor and go with Andy and his crew; you won't regret it. Neither will your animals, your bank account, nor your peace of mind. read more

We got all windows replaced by Andy and his crew. Very good service and good price. They only spent 3 hours for installed our 9 windows, and they also cleaned up all the waste. I was happy with the the final product. read more

Green Technology Windows & Doors - Outside - Windows Installation Near Me

See all