I contacted them without a reference because they were one of the few HVAC companies I could find…read morethat would service underfloor heating. It was easy to book an appointment for an estimate online and I received a response back quickly to suggest recommended times. The technician, Kamil G, came out and was professional and efficient. Within a week their 2 technicians came out to do the work and they showed up early and on time and stayed late to ensure that it was working properly. When they noted an error in how they set something up, they called it to my attention and corrected it right away. Their supervisor came back the next day to check the work and demonstrate how to use the system. I received 3 different quotes for this work and Global had the best pricing and was definitely the easiest to work with. I would strongly recommend them for your needs and I intend to call them back for future work.

I do not recommend them…read more They were supposed to tuneup my hvac and were in and out within minutes. Months later I also just found out. They replaced my filter with the wrong size. If they missed something this simple I wonder what else they didn't do correctly. Don't waste your money here. They will not check properly and when you need your hvac in severe weather, it will stop working.

what an awesome experience I had with the technician he was so kind and got the job done with no…read moreproblems. We were so pleased with his performance. Yay for Johnny G.

So far two fantastic experiences. First one they spent a couple hours trying to diagnose my…read morefurnace acting up. Turns out it was my air filter being too restrictive. Tried to tune the furnace anyway to accommodate it, which was actually kind of fun to watch all the different ways it could be done. No other HVAC technician I've ever worked with before has done that. A/C maintenance went great too. First company I've ever hired that didn't try to sell me an entirely new unit just due to a faulty capacitor. Even gave me the model number of the capacitor to replace if I want to save money and do it myself (I'm reasonably handy so it's something I'd probably do). I'll be using them for as long as they give great service!

I had a great experience working with Erik and the team. They were incredibly responsive,…read moreprofessional, and easy to communicate with throughout the entire process. They quickly diagnosed the issue with my aging HVAC system, clearly explained my options without any pressure, and answered all of my questions thoroughly. When I decided to move forward with the replacement, they were able to schedule the installation right away, which was especially appreciated during a stretch of very hot weather. Their communication was excellent from start to finish, and they made the entire process straightforward and stress-free. This wasn't my first time using them, and it definitely won't be my last. I highly recommend them to anyone looking for honest, reliable, and professional HVAC service.

We had some unfavorable experiences with some of the larger HVAC companies out there, many of them…read morenow backed by private-equity companies. They always suggest replacement or unnecessary services, the quotes are shockingly high, and they want you to buy into programs to reduce fees. I'm so thankful I finally found HVAC Buddies. We called them for help when our AC went out again only 3 months after the last technician (from a private equity-owned company, you'd know the name) replaced our refrigerant. Eric was extremely prompt, professional, upfront, and trustworthy. He identified a leak, topped us up with fresh refrigerant to get us through a a few days of upcoming hot weather, and scheduled the replacement same week, even if it was a complicated one with a crane needed and rooftop installation. The crew was efficient, professional, and thorough, and the price was almost half what we had been originally quoted by the other company.

I strongly suggest you do not use this company. They are not reliable, and they do not send service…read moretechnicians as pormised. The quality of work is very poor. They installed a phase limiter on my refrigeration system which caused the unit to malfunction. Then their tech did not show up as scheduled. Buyer beware of this outfit.

If Zero was an option - I would put Zero stars. My neighbors used this company 2 years ago so I…read morecalled them for a quote when my heat went out. Their quote was almost $14,000!!! My 3 neighbors pitched in and paid $7,000, 2 years ago (the crane needed to hoist the units up to the roof is expensive I'll admit). When I questioned the price being doubled, the response was COVID related. I call BS. DO YOUR HOMEWORK people. The quote I am going with is LESS than this price gouge of a company gave me. I'd NEVER recommend them.

Wise Mechanical really saved the day for our business this week! The heat in our clinic went out…read moreduring the coldest few days of the season. The place we were previously using was dragging its feet getting us a quote and Wise was recommended as an alternative by our property manager. Tom came out same day, within hours of us calling and was able to diagnose the issue and get a quote out to us with several repair options. The repair itself was done the following day right on time. Very professional, responsive and friendly service from Tom. If you are in the southwest suburbs and in need of HVAC services, this is the place to go!

I was referred to Tom by a co-worker. I was having issues with the ac-fan not shutting off. He…read moreliterally came out with in less than 2hrs and quickly knew what the problem was. He was very professional and honest about what needed to done- and he did not try to push for a new unit. I do know it has to be replaced eventually and I will definitely reach out to Tom for assistance. Thank you for the fast service!

Quick response, showed up the same day as I called. Tamar was easy to talk to and explained…read moreeverything well.

Tamar and his team are great. What's important is that not only are the helpful, prompt, friendly…read moreand knowledgeable - they listen. I've had a problem with at least one vent sweating profusely during hot, humid weather. I had multiple HVAC companies turn me down to even come look at it. I finally got a HVAC company company to come out to my house, but they didn't listen to my suggestions or concerns, and instead charged me $89 to tell me "the sweating vent you have is probably caused by your filter". Spoiler alert: it wasn't. Whereas, Tamar listened to what I asked, solved the problem, and offered helpful suggestions. They are my new go-to HVAC guys!

Easy to work with and solved our A/C issue (compactor and refrigerant refill). Thanks!read more

Vinnie and Preferred Comfort are great. Thorough, honest and knowledgeable…read more Unfortunately I did not know about Preferred Comfort previously as I got completely screwed by ABC to the tune of $2200 as I had to go out of town therefore had to let them get my heat back on. When I got back from my trip I called Preferred Comfort and he cleaned and assessed both of my furnaces and water heater and gave a clear explanation of the status and recommend actions. Preferred Comfort will be my choice for HVAC from now on. Buyer beware if you call ABC!

Had a scheduled appointment and the technician never showed up. We had to call four times before…read moregetting an answer and then we're told that they could come an hour or an half after the end of the scheduled period. Will not ever be using the service and would not recommend them to anyone.

Super dependable and great service at my apartment rental and my business. Ofenloch is GREAT for…read moreresidential and commercial and is my first call when there's an issue with a/c or heat. They know the business and have offered me different solutions to save money as well. THE BEST!