I received a new high efficient furnace from NSB and it runs very quiet. I'm very satisfied with…read morethis company. The price was better than the other companies. I called 12 different companies, big names and small names. Other companies offered either high prices with low warranty OR low priced with low warranties. NSB offered Both, Low price and High warranty! Out of all the companies, I'm glad I chose NSB!!! The service was caring, nice and friendly. They came out to inspect fast. No hidden fees like the other companies. The price I paid was the price I was quoted by NSB. This company was HONEST from the beginning!! So many customers are quick to leave a negative comment but rarely do people leave positive reviews. THANKS NSB !!

Originally went to a different HVAC - after buying and installing a "new" thermostat, I was…read moreinformed I needed a new electric furnace. I am a senior citizen on a very fixed income. The electric furnace I had was 11 years old. I called N. S. B. for a second opinion. I should have called Marvin (N. S. B.) first! After testing gizmos and what-cha-ma-call'ems, he found a widget that did not switch off - or maybe it was stuck on? It cost a TOTAL of $180.00 to have Marvin replace the widget and get a new thermostat (the one that the other company sold me did not work). He came back on Saturday to ensure that the furnace worked without problems - he double checked the other gizmos to make sure nothing else was stuck in the wrong position and that the furnace was truly fixed. It was - and four days later - is still silently providing me with quiet efficiency. Marvin saved me from spending over $3400.00 needlessly with that other HVAC company. Great job, professionally done, reasonably priced. I will keep Marvin's number handy!

The worst customer service you'll ever see in your life. From Mike to George to Shaun. They're all…read morehorrible and have no clue what they're doing. They will hang up the phone on you if you're calling for repairs. Brand New AC that they installed broke down. Still under warranty, and they're too lazy to come out to fix it because "I'm too far away". I guess I wasn't too far to install the unit, but too far to fix the problem they did !!! There are many other reputable HVAC companies that deserve your business and your money. This one certainly does not.

These guys are great . . . period…read more My wife went over to their offices on West Court Street in Monee . . . the white cinder-block shop across from the ball fields. They were closing shop but let her come in. He said he'd be over within half-an-hour and was there. Finished the job in 20 minutes at a very good price. Highly recommend them.

When I had my air conditioner serviced in the spring the guy was very honest that I needed a new…read morecapacitor. He showed me the test and I know my way around air-conditioning units. He didn't try to upsell me to a new unit. Family run. Would definitely use them again.

I waited a week after the installation of the new AC to see how it ran and I have to say I highly…read morerecommend Air Source 1. AC went down during the hottest days of summer and Tim came out and gave me a quote, on paper, to replace a 25+ year old unit, answered all my questions professionally. So I knew there were no add ons. On day of Dustin and Alex came out, professional, really nice and easy to work with and installed it within hours. They kept the install clean and no fuss. Funny guys, too. Great to talk w/. Waited a week to see how the AC ran and it is phenomenal. Worth the investment. Highly recommend Air Source 1.

1st time I used H.A.S service for entire home vent cleaning and they are efficient, clean,…read morepersonable and explained in detail what they have to do and why. They made sure they put back the furniture that was moved away from the air returns and vents and were very neat. I highly recommend them.

Kris and his staff always do a great job! I find them to be very professional, personable and…read moretrustworthy!!

Our AC went out the night before we had to show our house. I am pregnant and we have a 2 year old…read more I was freaking out because I didn't think comfort zone would be able to help us in time. I was able to reach them via messenger at 10:30p at night and fill them in on the situation. They said they would get someone to us at 10am the next morning. In the morning I reached out to see if anyone could get to us earlier as our first showing was at 10am. Glen showed up at 9:15a and by 10:15a our AC was fixed! We were so grateful! Would absolutely recommend! We have had Chad work at our house in the past as well and he is very helpful as well.

My husband and I have used Comfort Zone at least three times now. They have serviced our heating,…read morerepaired sagging ductwork in our garage, and serviced our AC unit. They are always very responsive, and extremely professional. They are very patient and understanding, great with explaining things without talking down to you. It's also very evident that they don't try to upcharge you or sell you on things you don't need. This company (especially Glen!) knows how to do business right - treat your customers well, and they will become lifelong repeat customers!

Carlos is wonderful! He really did us a solid in a hurry! My air had been out since 5/2/24 and he…read moremade a point to juggle his schedule and service my unit before the heat of the season hit. The price was right, too. I really appreciate you!

From the owner: Our business has been serving the South and Southwest suburbs of Chicago for more than 15 years. We…read moretake pride in providing our customer with timely and efficient service at a reasonable cost. Let us help you with your heating and cooling needs.

Jason did high quality work at a very competitive price when he did maintenance on my heating unit…read moreand humidifier. Good honest work at a good price. What more could I ask for?

My water heater went out. The company that "diagnosed" the problem charged me $99 and said that…read morethis did not include the cost to replace it. The company then quoted me $2200 as the cost to replace it and reiterated that this did not include the $99 that they already charged me. So yes, had I gone with that company, it would have cost me $2300. Armed with this information, I posted pictures and exactly what the "diagnosis" said and asked for emailed quotes...to be clear I said EMAIL only. I then got no less than 10 phone calls saying "please give us a call so we can talk about your situation. Some called more than once. Lakeland Heating and Cooling (Jason) was nothing like that... $1270 flat rate to replace the water heater. Yes, thats how he replied in his email.. as I requested. He came in.. with the water heater... replaced it... and went on his way. Other companies, that followed directions, also came in higher than $2000. I am EXTREMELY satisfied with Jason and Lakeland! High Quality, Tremendous VALUE

Always thought they were wonderful till they did a no show. I waited seven hours with a pre…read morescheduled visit loosing time at work. They do not need me as they have lots of customers now but watch them pull a no show on you next.

Had my furnace stop working on Saturday night. Called Kevin at 7:00 p.m. Weather was really bad. He…read morewas at my home in an hour. found the problem, fixed it in about an hour, had the part in his truck. Very reasonable price. Now I know who to call for my Mobile home. Would highly recommend this company and Kevin.

Requested a HVAC and Furnace tune up through the yelp projects…read more Quick response and got us on the schedule. They came out today and the tech was great, checked everything out. Happy with the service and would recommend to other. We will be repeat customers in the future

Timely, friendly and knowledgable repair team. Thanks for helping me out in less than 24 hours.read more