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Founder James Nelligan, brings more than 30 years of expertise to satisfy your window and door needs. With a highly qualified and experienced sales and installation staff. Thermalcraft, Inc. will provide extensive manufacturer and product knowledge and superb service. And to further guarantee your satisfaction, we offer a 10 year service and labor warranty on all of the products we install. Call 630-279-1220 today to learn more. We are truly proud of our reputation for service at Thermalcraft, Inc., and customer satisfaction is our number one priority.
Services
Thermalcraft Inc. is a family owned and operated business that has been providing the Chicagoland area with the sale and installation of top quality windows, doors and siding since 1984. Our goal is to create the most satisfied customer possible with our expert sales and installation staff, and superb service.
Reviews (24)
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Annalisa N.
Jun 01, 2022
Love love love this company! They do great quality work. We love the new entry door and storm door!
Dave Wyatt
May 10, 2022
Did not use them.they only would sell 3 windows. I only need 1 at this time.
Sandy T.
Oct 31, 2021
We hired Thermalcraft again to do the windows and siding on our house. They did an amazing job. Our house looks brand new and we absolutely LOVE it! The two men working on our house were very skilled and turned our tired looking 74 year old house into a beauty. Very nice guys, cleaned up every day and were courteous and helpful. Pricing was extremely fair and exactly what we thought it should be based on research we've done. They beat out 4 other quotes hands down and delivered an excellent end result.
Nancy R.
Oct 21, 2021
I give Thermalcraft my highest recommendation! They replaced over 20 windows on my very old and unlevel home. I'm sure it was not easy! They did an outstanding job. From the initial sales estimate meeting, to the window quality, and the installation.all was smooth, painless and excellent. Everyone we dealt with was super nice, and very mindful of our time and home.

The clean-up was also impeccable. Best of all, we literally saved thousands of dollars as their pricing was absolutely unbeatable for very high quality windows. Please see the before/after pics. Thank you Barry, Frank and Mark for a massive improvement to our home! We could not be more pleased.
Mistrata F.
Sep 16, 2021
I was very impressed with my service from Thermalcraft from start to finish. They arrived for the quote on time and delivered a very competitive price for a high quality window. The best part about doing business with Thermalcraft was the outstanding delivery time. In the end through their own efficiency they improved my delivery by four weeks and I currently have windows installed that were not supposed to be available until the middle of October and they look fabulous. Our installer, Frank did an excellent job. Great company to work with!
Cliff Luxion
Aug 14, 2021
Picked up a couple of replacement window sashes. Took almost no time at all. Helpful employees. Happy to have purchased windows here 15 or so years ago.
Judith G.
Jul 11, 2021
Judith Graff, Neighbor Whoever recommended Thermalcraft for my window replacement, I want to send you a huge thank you! From the day the president came to our house to give us an estimate until the final day of installation, the journey was one pleasant day after another. The installers were so hard working, polite, and never left a mess when they left each day.

The windows are wonderful and I could really tell the difference during this last heatwave. I highly recommend this company for your window replacements. I'm so glad I used them. I want to add that my windows were put in in May. I wanted to wait a while before posting a review just incase there was an issue (which there was not). It's now July and I'm so happy with my windows. Great experience!
Joanne Thompson
Jun 23, 2021
Had patio doors with mini blinds installed in 2018 - they did a great job! Would highly recommend.
Wilson Mora
Mar 04, 2021
Critical: Professionalism, Quality, Value The person who came to check the doors that I needed to replace had the wrong phone number to call me and did not have the decency of getting out of his vehicle and ring my door bell. Instead, he asked a neighbor if he was the person (me) or knew me from his car. Lack of professionalism.
Karen F.
Aug 27, 2020
Installed 4 awning windows in a size unavailable at the usual big box hardware stores. They were able to install the windows earlier than initially projected, which was great. The crew was on time, skilled and efficient. The windows look great and the clean up was excellent. We're very pleased and plan to call Thermalcraft again if we need to replace other windows.
C. C.
Jun 09, 2020
Amazing product and workmenship. Amazing warranty. They were able to beat prices of any of their competitors. Good at communication, and customer oriented. We couldn't be happier! Great job barry and pat! Cant wait to work with you again : Charu C.
Sandy K.
Jan 24, 2020
Thermalcraft replaced two doors in my home, and the work was so good, I am still smiling months later. The salesman came to my house right away to provide a quote. The installers came on the day and at the time they said they would. The quality of the doors is excellent. And, the trim work is exceptional--perfectly mitered corners and careful installation. When they left my home, they took the old doors and all the debris with them. I could not be happier with them and will use again!
Amy V.
Oct 31, 2019
Excellent service and quality product. We had sliding patio doors installed and the guys did a great job including matching our house trim color to door trim color. They aim to please!
R. R.
Sep 13, 2019
We had all of our windows replaced over the last few years by Thermalcraft. Barry came out each and every time to measure and make sure everything was accurate. The windows are very nice quality. We had an issue a few years back - thought it was the window but it was actually the wood trim above the window. Barry came himself - right away - even caulked the trim where the water was getting in. So very happy with the quality and customer service we have received over the years!
Liz M.
Sep 09, 2019
Excellent, personalized service and always willing to go the extra mile. Definitely happy with the product.
Lindsey Dau
Jun 06, 2019
We had a wonderful experience with Thermalcraft. They installed new windows in our home that was built in the 50s and has never had updated windows. We have one massive picture window in the front and had two new windows installed in our nursery. We were on a time crunch as our picture window had shattered one day from old age and I was already 7 months pregnant.

I was hoping they would be done before our baby was born. They were swift with ordering the windows. On the day of installation of the windows, two men took about 5 hours from the time of arrival to finish the job. They were pleasant and respectful of our home. The windows are beautiful and give our house a nice update look with the ability to give us fresh air (something we didn't have before!) Plus, they were able to order and install before our baby was here! (Two weeks before!) We loved working with this company and would definitely recommend them based on affordability, swiftness, ease of transaction, and beauty!
Justin L.
May 07, 2019
Very rude customer service. An employee came out to measure some windows. Let's start with the fact that he parks while facing the wrong way on my street & also blocks my driveway & mailbox. I don't think that I have to say that this is both dangerous & illegal, but I will. While in my house, he tells me that my 2 windows are different sizes. Now, I'm blind in one eye so I don't always see things correctly.

He turns & says, "they're not the same. It's not an illusion." Well no shit. So we finish the walk through & head outside to check the window wraps. He seemed confused as to what I wanted to be done & says he will have to have someone else call me. So he gives me a quote so I ask for a written estimate. Go figure, he doesn't have paper to give me a written estimate.

How do you show up to an appointment & not have paper for a written estimate? I call to complain about his unprofessionalism when the woman on the phone simply says, "he's been doing it for 30 years." I'm not sure what that means or how it gives him a pass to be unprofessional so I'll let you all figure that out. Needless to say, I'll be going with a different company.
Brian J.
Nov 30, 2018
Had 17 windows replaced in 2011 and they have been excellent. The service after the installation has been very good as well. Found them on Angies list.
Janice M.
Sep 26, 2018
We were looking DH or a company to replace our windows throughout the house. After looking at ten different companies, we chose a local company here in Villa Park. Thermal craft came out, and spent a while talking to us as to what our options were. They never pressured us to make a decision, gave us a detailed estimate and told us to let them know.

Right there we knew we had chosen the right company. They set us up on a schedule, arrived on time, and finished the job in less than 2 days. The finished project was amazing, we had an airtight house, and our heating bills were 35% less last winter.
David Adams
Jun 26, 2018
We had Thermalcraft replace one window and a sliding door in our home. When Jim, the owner, came out we wanted to make sure that since one window is being replaced that it would match with all the other windows in the home; this seemed like a simple concept. When the work was done we found that the window slides both ways. Every other window in our home does not.

The sliding door that was installed during the first rain started leaking. When we called Thermalcraft Jim's sons both informed me that that is the only product they make and that they would NEVER sell single sliders. After the call the second son called me to tell me that our order specifically states a double slider. The order does not state that its a double slider and when we called the manufacturer they confirmed that it could be a single or double.

After all this the owner calls me a week later to inform me that he never told us this and that my wife must have been confused. I informed Jim that I was there for the consult too and from this point he tells me that the market wants double sliders so that is what he told us we were getting and that's that. We never had a chance to talk about the sliding glass door.

No we have to replace that window again so when we sell this house one window wont be obviously different from all the others. The only this Thermalcraft had to say about any of this is that both my wife and I are obviously incorrect and we did in fact want one window that if different from every other one in the house. Be careful with this company if anything goes wrong then YOU are wrong never them.
Donna Tuman
Jun 15, 2018
Looked at many companies for new windows after getting referred from a family member I went with Jim and his team they were the best price and they did an awesome job. The windows look terrific and once my patio doors are done hopefully will notice a big difference with the utility bills.
Sue K.
Mar 10, 2017
I had them put in new windows and it wasn't long after they were installed that it was obvious they lacked quality, once winter came. Too much cold air coming in. The guy also turned out to be a jerk personality-wise as he made some comments about the awnings on my house being "ugly". His opinion had not been asked for on the topic. It's a $350,000 house that gets alot of compliments on its architecture and looks I bought all my future windows and doors from Rusco in Westmont. Veryprofessional folks to deal with there. Don't waste your time or $ on the clown from Thermalcraft.
Charlene
Oct 22, 2016
Thermalcraft has replaced 15 windows and a sliding glass door within the last few years, on 3 separate occasions. Their craftsmen are detail-oriented and they have done an excellent job each time. The quality is obvious. There was a malfunction with the sliding glass door and they quickly made it right. Everyone I have spoken to on the phone or met in person has been helpful, honest, and professional.
Morris N.
Mar 30, 2016
They carry good quality vinyl windows and fiberglass doors. The installers work efficiently and do good work. Windows are price competitive. Doors seem a bit pricier. The doors took about 8-9 weeks to get from the manufacturer. I'll need some more windows soon and will probably go with these guys again.