fast and efficient service. Quality work. Very knowledgeable staff. better than fair price…read more Thanks, Mike and Jeff!

Without a doubt call Naughton for HVAC needs. They were friendly, helpful, and the service was top…read morenotch. They came much cheaper than I was quoted from another company and a repairman was here in 15 minutes.

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

Even though we hadn't adjusted the thermostat settings, we were unable to understand why our energy…read moreexpenses had been gradually increasing each month for some time. We requested a comprehensive home energy assessment from this company. They went above and beyond what I had anticipated, a simple once-over. The professional tested HVAC performance, insulation levels, duct leaks, and even conducted a blower door test to find leaks and drafts for several hours. He compiled a list of fixes based on potential savings and produced a detailed report including thermal photos. We improved the attic insulation and sealed the ducts. The improvement has been amazing--the home stays more consistently conditioned and our heating and cooling system operates less frequently. We have already observed a 25% decrease in our utility costs. In addition to selling us equipment, They truly stand out for their expertise and transparency.

Welp, it doesn't get much better than this. I called Williamson after trying Illiana the same day,…read morehoping Williamson good send someone right away (Illiana couldn't make an emergency call and we needed someone here before we left for work). The technician called me back immediately and stopped by us on his way to another job within 30 minutes of the call. They were in and out within 30 minutes, replacing our 2nd capacitor for $100 less than Illiana charged us for the exact same part last Summer. I am happy to be working with a small, local business, and now I'm never turning back. Thank you Williamson!

Hello everyone, I want to give an enthusiastic 5 thumbs up for Williamson Heating & Cooling. Let…read moreme tell you why, Williamson has been my HVAC team for 17 years. As a single girl, y'all know it's hard to find good help. Wayne and his dad are AWESOME! They've installed and maintained my HVAC system with consistent excellence. I once had an outdated furnace that would go out on the coldest days, Williamson has always been there for me. They arrive on time, clean up and are all very courteous. I have replaced a heating and A/C system with Williamson and there is no other HVAC team for me. I highly recommend my HVAC team. Williamson heating is the best!

We called Summers on a Sunday (the Sunday before Memorial Day). It was 90+ degrees and our air…read moreconditioner made a grounding noise and would no longer start. The company who installed our Carier unit isn't open on Sundays so I called Summers due to the positive Yelp reviews. The service call was $150 to come out and look at it - totally understandable. The service tech listened to my son explain what happened and where on the unit the sound was coming from and it was quickly diagnosed and working within 5 minutes. Great right! BEFORE the guy fixed it, my husband asked how much it would cost. The guy said $200. We looked up the part on-line and it was $10 so we figured $150 for the service call and $50 for the 5 minutes it took to diagnose and install the $10 part. The bill details read the following -》trip charge $49 + Dual Cap installed $190 + $159 comfort plan agreement for a whopping total of $398. $200 over the quoted price of $200 OR $50 over if you add the $200 + $150 trip charge. When I questioned the bill, the tech just kept telling me how great the comfort plan was and gave me zero option of not purchasing it. In essence, I purchased an agreement NO ONE told me I had to buy either before they came out or before they would repair it. I was the told the agreement included a 2 year warranty on the part and labor along with a free fall cleaning of the air conditioner, the furnace (that was just cleaned) and a water heater flush. I don't even own a water heater! I have a boiler. Frankly, I am leery of having them back to 'clean' anything because it will just lead to more hidden fees.

BEWARE. They have good reviews, but here is a breakdown of the one star. Would be negative one if…read morepossible. EDIT - They left trash behind. The bucket with all their unnecessary rebuild junk left next to the toilet. For those who have frustrations dealing with AI and auto-booking... they have an annoying robot who books appointments who cannot differentiate members from non-members. Took two phone calls and 6 minutes to connect to an actual human.The things meant to help are harming us. Pay people, not machines. Regarding machines, the plumber took a quick look and confirmed it was the fill value not doing the job. Something I told my mom I could fix easily with a part from ACE. He quoted $368 for a rebuild, which didn't need to be done. I replaced the flapper and chain about a 6 months prior. Not only is this an easy DYI fix with a $20 part, but he tossed the 6 month old flapper and chain. He tossed the work I just did. THIS DID NOT NEED TO BE DONE and it's insane to charge that much. It already costs members $69 to come out, and $368 is with the member discount. I am not the home owner, so I have no say so in approving the work. I have builder friends and my neighbor (HOA) agreed the price is insane. $437 to fix a $20 problem. This is 2026 and my mom is on a very limited fixed income. I spoke to Ben the manager, asked for a breakdown. If the up-charge was the parts or labor. He said there is no break down and that's what it costs. I could not have been more angry with these people. If you know nothing about plumbing, than learn. Because it ridiculous to be charged that much for something so easy to fix.

STI Heating & Air Conditioning saved me so much money! I had another HVAC company looked at my…read morecentral air unit because it was blowing lukewarm air. The other company told me I needed a new compressor for $1699 and they took only cash. After a repairman ran off with $453 of my aunt's cash, I decided I did not feel comfortable giving the HVAC repairman $2000 (with labor) in cash. So, I told him I would seek a second opinion. I called STI Heating & Cooling who were booked for the week so I made an appointment for the following week. Ted arrived on time and was very professional. He took a look at my unit (which is 42 years old) and told me I needed a Hard Start Capacitor for $173. He also checked the amount of Freon (R22) told me I might need a little. He installed the capacitor and added a little Freon and my unit start blowing extremely cold air. Ted's work was great! He told me his father had an old unit like mines and he keeps him father's unit working. I told Ted the other repairman thought I needed a new compressor and Ted suggested maybe the other repairman was not familiar with older units like mine. I am SO glad I called STI Heating & Cooling! I told Ted they are now my go-to company for ALL my HVAC activities. I would highly recommend this company - they proved to be a huge money saver for me.

The service was amazing! Customer service was very helpful and the technician provided excellent…read moreservice. And they were reasonably priced! I would definitely recommend STI Heating & Air Conditioning to anyone looking for repair and/or great service. Will definitely contact them again for future repairs and checks. :)

Provided a free estimate and completed ductwork replacement within days. All staff are…read moreprofessional, amiable, and efficient. Colby completed expert installation in under three hours. Marlon assisted with final cleaning. And Diamond's responsiveness to questions and scheduling was invaluable. Kudos to All at Tech One. I highly recommend them. D. Young in Richton Park

From the owner: Tech One Heating and AC is locally owned and operated HVAC contractor that can provide homeowners…read moreand business owners with a wide range of heating and air conditioning services. We offer our comprehensive services to Northwest Indiana and the South Suburbs of Chicago. With over 20 years of experience in the Heating & Air Conditioning industry, we are confident we can help you with whatever heating or air conditioning service you need. Maintenance Agreements are available to ensure that you are always VIP in our customer database. Regular maintenance is one of the most cost effective ways to maintain comfort and increase efficiency.

Elite Comfort guys are very professional and high quality technicians. We trust them to tell us…read morethe truth about our HVAC system, etc. They were formed by three young men who formerly worked for a south suburban and well known company that sold to a large outfit - we prefer the family business atmosphere of Elite. We chose to stay with Elite because we trust them, they are a small, local business and they know their stuff. They are beyond fair with their rates and answer every question we ask - honestly. They have kept our units running well without incident. Would recommend them, and have, to everyone we know.

From the owner: Elite Comfort Heating & Air Conditioning offers HVAC services in Northwest Indiana. We provide…read moreinstallation, repair, and maintenance for heating, cooling, and indoor air quality, ensuring year-round comfort with a focus on customer satisfaction.

David's is extremely reasonable and professional. Dave answered all of our questions and was very…read moretimely and responsive. As a bonus, he is so nice and professional!

Dave has been servicing our furnace and air conditioner for over twenty years. I can attest to his…read morehonesty and his expert work. He is there when you need him. Seriously. And...he is just an incredibly good hearted and nice person. I can't imagine having to work with anyone else. He just installed new equipment for us because of a basement flood. Man, it all runs so smoothly. Call Dave. You won't regret it. Really.

Wait until they discover their two-stage furnace was never installed correctly and that it's been…read morerunning on single stage for years. This was a serious oversight. If a two-stage furnace was wired or set up incorrectly and only ever ran in single-stage mode, the homeowner probably missed out on: Comfort benefits - two-stage furnaces are designed to run on low most of the time, giving more even heating and fewer temperature swings. Efficiency - the furnace likely used more gas and electricity than necessary. Longevity - constant high-stage operation puts more wear on components than normal two-stage cycling. It would worth having a qualified HVAC tech inspect the wiring, thermostat settings, and control board configuration.

Today I had a surprise delivery! I am the proud owner of a…read morenew furnace. His delivery was much sooner than expected, but you know how these things go. We are both doing well, but the bill was a little bit painful for my wallet. (But very fair) Full Name: Lennox ML180UHE (Leni) Weight: 127lbs Height: 33" He is warm and already quite a comfort. I know we will enjoy years of happiness with Leni. The whole experience with Illiana HVAC was easy and professionally well done. My old furnace had a great life but reached the end of its service. Illiana understood my needs and got the install done in a few hours. Adam and Vaughan were fantastic with the installation. They were very professional, respectful and talked me through the whole process. I will use Illiana for all my HVAC needs.

We have used Modern Heating and Cooling multiple times in the last 10 years and recently had a…read morenew A/C and Heating system installed at our daughters home, and had previously gotten a new system in our home. Our experience has been nothing but wonderful, the entire staff is always courteous, arrives on time, and explains what the issue is and most cost effect solution. We would never go anywhere else for our cooling and heating needs.

Needing a new furnace and A/C, I took one week to get estimates from 6 different local companies…read more Jason was the last one to cone out and he was the one I went with. He is a technician, not a sales person like most of the other companies. Therefore, he know what he was talking about as far as what equipment I needed, and why. He was very personable, polite, and an asset to the company. I decided on Modern and scheduling was only a few weeks out. On the appointed day, Jim and Dave showed up on time, and worked all day to get everything installed. They were polite, prompt and obviously knowledgeable. All went without a hitch and they removed the old furnace and AC and cleaned up everything before they left. I certainly chose the right company, I could not be more pleased with them and how flawlessly everything went. Their price was the best around for the very same products other companies quoted considerably more for. Please shop around and do your research before you make this considerable purchase. I did......and happily, I chose Modern!