Reviews of local pros in Carol Stream, Illinois

Gray’s Mechanical, thank you for sending Anthony to us. It was a late night emergency call.
He was very friendly, courteous, knowledgeable and extremely professional.
We will definitely keep your company in mind should we need any additional service.
Thank you!

Anthony was very professional and persistent. Any questions I asked he answered clearly. Would highly recommend him to anyone. A++ service.

Gray’s Mechanical came in with a thorough analysis of my HVAC needs and provided a price that beat other quotes I had received. They were very knowledgeable and thorough throughout the process.

The service Gray’s Mechanical does is top tier. My furnace broke down, as soon as I gave them a call and let them know I was in Bridgeview, they didn’t hesitate to come out, access my situation and gave me all possible options. The day of replacing my furnace was a breeze. Very professional, clean and organized. Appreciate all their hard work!

This was our first experience with Gray's Mechanical. Of course our furnace went out on the weekend. I called and spoke with Bradley. He took our information and said the service tech would be calling us. A short time later Anthony called and let us know his eta. He arrived within minutes if the estimated time. 👍 Anthony went to work on resolving the problem. We needed to replace a board. He picked up the part and installed it. With a bit of troubleshooting, we had heat.

Anthony and Juan were great with installing new furnace and was available within 24 hours to install a new furnace. Alex was also great with providing the different furnace options available to me so I can choose the one that works best for me within a good price point I was able to do.

I moved here in July, only to discover that there were major safety issues when the Fall inspection was done. I am sooo grateful to the entire team at Gray's Mechanical LLC. From each technician that came into my condo to the staff that took my calls, they were easy to interact with, very professional, and always quick to respond to an inquiry. I had an extremely frustrating situation with my home Warranty situation that dragged the replacement far longer that it should have, but once I got in touch with Gray's it was the complete opposite. Gray's is fantastic in my book!

Their onsite installation guys are very professional. You can tell this is a business that cares. Our home is a bit challenging to work with, and I thought the guys did a great job.

Gray’s Mechanical was very professional and efficient. Dan Gray gave a quote in a timely manner and their technicians are very knowledgeable. I highly recommend them for your Heating and Air Conditioning needs!

Fantastic experience having Grays install our new furnace. I did a bunch of reading and called several companies for quotes. Grays went above and beyond right from the start. Paul took the time to ask what we were looking for and explained all of the options. He even calculated the heating requirements for our house and recommended a a smaller unit than we had. We didn’t feel any upsell pressure etc, and communication was excellent.

The install itself was super smooth. The team was in and out in about four hours and left things super clean. They explained the system and even gave me a copy of the full install manual to look through. It was clear they put extra effort in the duct work, and it looks nice, something I didn’t expect.

I did have one small issue with a valve, and mentioned it when they asked how everything was going the day after the install. Within 45 minutes Sergio was at my house troubleshooting. He swapped a part, double checked everything and walked me through a few extra features and how to adjust them later on if I ever wanted to.

All in all, excellent service, super clean install and great communication. The price wasn’t the lowest, but was very very competitive. I was impressed by the quality and how everyone talked me through what and why they were doing things a certain way, even though they didn’t have to. It’s clear that this is a company that values its staff and customers and know they stand behind their work. The small difference in price between other quotes was absolutely worth it.

I’ll definitely be calling them when it’s time to swap my A/C, and probably for a water heater sometime in the future too.

Juan came over to take a look at the furnace that would not stay lit. He took his time, did diligent work, and amazing troubleshooting. Not only found the problem, but also took the time to fix a few other things that could be potential issues later. This was a tricky one and he didn’t back down or just say he couldn’t fix it. He took the time and took care of us.
Great work ethic, very polite, promote timing.

Just had a new furnace installed with Gray’s! Andrew and Oscar were very professional and did great work getting it installed! Alex was also great to work with for walking me through my options and getting it scheduled without pressuring me in any way. Thanks a ton!

My experience with Gray's Mechanical was world class. From the initial estimate walk through in my home, to the installation of my new heat pump and furnace, the experience was pleasant the whole way through. The entire process with Gray's was efficient and effective, just like our new HVAC system. They've found the perfect combination of new school technology and old school relationship building. I feel like I'm in the right hands going forward!

My family had some issues with our air conditioner gave Anthony a call and he walked me step by step on what to look for and to do to make it work and it did, Thank you so much! I would recommend Grays Mechanical LLC to anyone who wants the job done the right way!!

Andrew and Juan were so incredibly kind and helpful! They showed up to fix our furnace on a brutally cold day, and showed up early to get the job done as soon as possible. They were both very polite and nice to work with. Would highly recommend!!!!!

Anthony came out to service my daughters furnace. He was extremely polite and professional. His knowledge and confidence was obvious. He identified the problem quickly and returned to his truck for parts. We had heat quickly and the price was reasonable. Thank you Anthony

I’ve had the pleasure of working with Gray’s both personally and professionally. They’ve handled my regular furnace and AC maintenance for many years, always to my satisfaction. When it came time to replace my furnace, their expertise with our complex setup made it an easy decision to trust them with such a significant investment.

Professionally, the company I work for also relies on Gray’s to provide reliable and cost-efficient service to nearly 200 condo associations across the Chicagoland area. Their staff is friendly, knowledgeable, helpful, and patient — truly a pleasure to work with.

Gray’s saved the day when my heater recently stopped working on a below zero day. They had someone come out within 4 hours of me calling. He was very helpful with any questions I had and managed to address the problem with my HVAC quickly and professionally. I also signed up for their membership program that is well priced and a good deal especially for me having an older HVAC unit. Would highly recommend looking into the program for people who fear the worst when it comes to HVAC problems.

Grays mechanical was extremely responsive to my initial request and had someone (Eric) sent out within 24 hours. Eric was extremely helpful and knowledgeable addressing an issue with my furnace and answered all of my questions. The issue has been resolved and I will continue to use them for all HVAC service moving forward. Thank you for your prompt attention, detailed explanation on the issue, and honest and realistic approach to resolving it. Much appreciated!

Andrew and Oscar completed a removal of an old furnace and an install of a new furnace. The outside temps were in the low single digits with interior temps dripping down to the low 50’s on the main floor of our house and low 40s in the basement where the furnace was. They were quick, efficient and explained the process, the new system works perfectly. Thanks for the quick service response, efficient diagnosis and installation of the new system.

Grays will
Be coming out next week to complete the install of the humidifier as well as the AC unit.

Thanks for a job well done.

Excellent experience with Grays Mechanical. They provided a very competitive quote to replace my furnace, and once I gave them the go-ahead, they had a technician on site within 15 minutes—that level of responsiveness is rare. The team was professional, efficient, and easy to work with throughout the process. Highly recommend Grays Mechanical for anyone looking for fast, reliable, and fairly priced HVAC service.