Heating & AC Service in Chicago

Wally was prompt, intelligent and fixed our furnace as quickly as possible.

Wally was great! He is very knowledgeable about the heat pump gas furnace and thermostats, figured out the problem and solved it!

I called near 11am and spoke to Jessica- she got us a appt with Wally swinging by. He called to confirm his afternoon look see. Wally was there by 315p and was out the door by 4p. Did a quick & efficient fix and explained all that he did. We got heat and all is good Would definitely recommend!

I could not recommend Wojtek enough. He's now installed our mini split system and replaced our boiler. Excellent service, extremely knowledgeable, and I trusted him right away. He does quality work and always explains to us why he does what he does in a clear way. He never leaves a mess and always has a good vibe. Thank you Wojtek!!

Wally & “Team TDH” are very professional & keep a great installation performing in an optimal manner!

I’d such a great service with TDH Mechanical both times I’ve used them. W. Wojtek was on time and friendly. He took the time to explain everything to me with great knowledge! I’m totally happy with the service and would definitely use them again.

Ken was great. It was his second time coming out this season to help us with the same issue. He was more than happy to take the time to fix the problem permanently and also was willing to explain to me what was going on. Great customer service by Ken and the company willing to come back and make sure the issue was fixed.

Mark was great! Always pleasant and very knowledgeable . Thank you for coming out so quickly as resolving the issue!

We needed a new furnace in the middle of a very cold winter. Figured we'd get taken advantage of IF we found someone who might fit us into their schedule. Turned out that we simply got timely and quick service at a normal and very price. The installers were very polite and considerate, barely disrupting our routines, if at all. They installed the new equipment beautifully, got rid of the old equipment painlessly, and even made sure we got our gas company rebate and an extended furnace warranty!

Hes great, we're dumb for not recognizing that the heat had been turned down.

Good communicator, did good work

Thank you so much!

Very satisfied! Kevin came out on short notice, just 5 hours after I called for an appointment and exactly when he said he’d arrive. Quickly diagnosed our problem, and after a short trip to get parts completed the repair efficiently and cleanly. A genuinely nice guy who knows what he’s going, we were very happy.

Installation of a Navien combo boiler unit and all of the configuration piping that comes with it to replace our old unit. The servicemen were very knowledgeable, set expectations properly, explained the setup of all the technical and non-technical questions I had. The pricing was fair without any hidden fees at the end. The new unit is working great. I am happy with their service from start to finish

Wally and his Co-Worker (sorry, name just slipped my mind), were hired to replace a 50+ year old Boiler and Piping -- this was not a job for the faint of heart -this was a BIG JOB: However, this Team: Top of-The line - their synchronicity and attention to detail really stood out( kind of like poetry in motion) -IMPRESSIVE - completely changed the look of the whole basement - definitely for the better...

Wally from TDH Mechanical Inc. was very professional, thorough and detailed in his work. He went above and beyond expectations to make sure our unit functions optimally. He informed us of the installation process to make sure all ordered parts were correct before starting as well. I highly recommend TDH Mechanical.

This is the 2nd time I used TDH’s services. As usual, they were very thorough, price was more than reasonable, and did an excellent job!

The crew showed up on time every day. Wojtek explained what they would do each day. The job site (boiler room) was always clean at the end of the day. The installation looks great: all the piping and wiring were neatly done (compared to the hodgepodge of the boiler that was replaced.) High marks all around.

Quick and easy-- thank you!

Ken, was very professional and on time, gave me a call prior to coming out, he explained the process and I was very satisfied with the service.

Fast, fair and everything functioning. Recommended!

Very professional, courteous & explains the work being done very effectively!

There are not enough stars to rate my review. Kris at TDH goes above and beyond the required work. The entire staff at TDH are very professional, knowledgeable and always are there for my needs. It’s hard to find good honest companies. TDH is the exception.

Wally was great！He helped us figure out what was wrong with our AC and gave us extra tips on the AC and the wiring. Very responsible and professional.

Kris did a great job. He was professional and very helpful.

TDH guys are so professional on installing the HVAC unit on a pitched roof. They even sealed the duckwork connected to the main unit. The price is reasonable too. I’ll definitely recommend this company to my friends.

Ken showed up on time and quickly completed his inspection and cleaning of our furnace and humidifier for a very reasonable price.

Ken gave us a heads up call letting us know ETA until he showed up. He was friendly upon arrival and quickly and efficiently inspected and cleaned our system! He also shared some friendly tips to help run the system more efficiently which was great to hear!

These guys were diligent and timely. They were also more fairly priced than other HVAC companies. I would recommend them without hesitation!

I've been using TDH's services for a few years and will continue to use them because they're great at what they do.

We initially contacted TDH Mechanical due to two neighbors who recommended them. They were correct in their recommendations. We got Wally Wojtowicz and his co-worker for the project. They were professional workers. They worked all day with only lunch breaks to complete the project. They provided through workmanship by minimizing the size of holes cut into drywall. He explained how to do the dry wall repair so the room would not get cold. He was considered for us as customer by starting the project at 8 am instead of 7 am. They cleaned the work area every day to avoid disturbance. We would recommend TDH Mechanical to anyone looking to install or repair mini split units and refrigeration lines.

I love the service they provide they was on time and work efficiently didn’t leave until everything with fix and explained everything to and made sure I knew how to work everything.Thanks again love the service

Super thorough install. Wally really knows his stuff and the new system works 10x better than the last ever did. So glad I went with them.

The TDH team is responsive and effective in providing services. I value their partnership -

Thorough cleaning and servicing of my AC units.

Very calm, professional, and efficient, Kristina did a great job within 48hrs after our call!

Ken is professional and knowledgeable!

Thoughtful. Helpful. Easy-going. Effective. Fast.

3 years after installation, something failed and had a warranty call. Tech came out same day (great), but then said the wiring failed and he did a temp fix by disconnecting the heat and applying the wires to the AC. Told me $250 for today and another $450 to come finish the job. Angie’s list says it is a $120-200 job total and that is assuming it wouldn’t be covered by the warranty, which it is for 4 Seasons Heating & Cooling (their competitor). So they want $700 for something that should be free. Ridiculous.

Diagnosed the problem quickly and made the repair smooth