I had a very unsatisfactory experience. 1-The app that tells you when the service person is coming has a non-functional link. I have reiterated this numerous times for over a year. Nothing gets fixed. 2-When the guys came to do the installation of a new AC unit, they asked which one. They had no idea because they could not get into the system to read them. 3-They brought the wrong coolant to put in the unit. Again, they could not get into the system and therefore, were unprepared. None of this is the fault of the workers. 3-When the put in the new thermostat, they left a gaping open area that left drywall exposed. They did not even bother to show anyone. 4-They left no receipt or owner's manual. I had to call to get them. 5-The new owner does not return phone calls or answer emails unless you try 3 times. Then, it appears he barely reads the letter or makes any effort to speak to me about the issue. I first asked for a general manager and there is none. I was a satisfied customer for well over 20 years and I will be finding another company. Mr. Jeremy Lewis does not really care if he retains business. read more

Gleason Plumbing, Heating and Air - This is a crooked hack job of a thermostat installation. - Heating & Air Conditioning/HVAC Near Me - Wauconda, Illinois

I had a Gleason truck cut in front of me in a parking lot that I almost hit. It was the 5400 Block of Elm Street (Rt 120) on 12/16/25 at about 10am or so. I did use my horn. The passenger in the Gleason truck stuck his arm out the window and raised it high as he yelled "F**k You", while using the middle finger. I am a senior citizen and I had my wife in the car. We were appauld at the language this technician used while in the company truck and on duty. I did have contact with Gleason. A plumbing forman reached out. They did appologize and said they would handle the issue. I am glad it wasn't my company, because in my day the employee would have been immediately terminated. read more

Gleason is the BEST! I have had a couple of major "breaks' at the worst times of year and each time they found the time to help me out no matter how busy they were. They were prompt, professional, and thorough at a fair price, doing solid, quality work that I know will last. I highly recommend them and will use them for all my future needs. read more

The cost is very over blown. Please look up the owner and read about his 40-60% increase in past couple of years that he is so proud of. Yes it's great to make money but sometimes you have to remember not everyone has that kind of money. You got a company that your Dad owned. read more

Had HVAC tuneup done today. Gary did a very thorough job servicing and cleaning AC unit. On time for job with text messaging notification prior to arrival. Happy with results. Will using them again. read more

called dispatch and requested emergency visit due to elevated voc at +2.5k ppb which apparently Gleason does NOT consider an emergency or at least a lucrative one. After pleading with these guys, a tech finally came and visually assessed the furnace. That's it. No static pressure test. Nothing that resembled any attempt to make a diagnosis yet they keep calling to schedule a cleaning. read more

Gleason is the best company there is out there! They're so professional and helpful. I love this company! And will keep considering them in the future Beyond my expectations and great pricing! read more

Our experience with Gleason & Elfering exceeded all of our expectations! They assessed our needs quickly, produced a competitive quote and installed a shiny new AC and furnace on the very same day! We also had them come back out to clean our ducts and dryer line. I bet they sucked enough pet hair out to stuff a mattress! Gleason & Elfering is fast, friendly and affordable. Call them with confidence for any of your HVAC and or duct cleaning needs! The Happy Henderson's of Grayslake read more

This business is downright dishonest, and my next step is to contact the Better Business Bureau. A few years ago I got tired of how noisy my HVAC unit was, so I phoned the company that had installed it. The salesman said that the developer had installed units that were too big, because he got them on a closeout. So I had my big unit replaced with a smaller one. Guess what? It was just as noisy if not noisier! I phoned the owner, who came out and said there was no way I could prove it since no decibel level was taken. I was stuck, to the tune of $4,000. Then earlier this year I discovered the A/C wasn't working. Again I phoned (should have known better) and a tech came out, spent about 30 minutes poking around and said it was fine. He said the cost was $330, so I wrote him a check. I later found out that our building just turned on the A/C before he came in. I didn't know that the building has to enable the A/C, but the tech must have known that since this is their business! So should the person who took my call! OK, I was stupid, but they sure took advantage of my stupidity! Now yet another insult: my HVAC stopped sorking during the very cold spell in early December, 2010. I phoned another heating company to repair it; they came out and said that they would be spending the better part of the day with two men and that it would cost upwards of $1,000 to repair. They couldn't come for three days.That made me very unhappy. Since Gleason-Elfering had installed this only 4 years ago, I called them. Naturally it was past the warranty, but The guy, the owner, was very understanding and nice and said he'd have someone come out the next day. He'd tell the guy just what wa going on and he'd fix it for much less. Well, guess what. They guy didn't come until late in the day, had no idea what was going on, and was unable to do a thing. I would avoid this firm at all costs. read more

I think they're crooks. Had them over about 10 years ago for routine furnace tuneup. Said I needed a new furnace. Wrong. They keep calling several times a year and I tell the 'STOP CALLING I think you're a bunch of crooks.' But they continue to call. I work with a furnace place I trust and call them. Obviously any one who has dealt with the once does not call the back. STAY AWAY read more

While the guy who came out to estimate was ok, his trane quote was twice that of other estimates for the same furnace and ac system! i replied asking if it was a joke, and got no reply. Stay away from this shop unless you are a fool and want to be separated from your money needlessly. read more

I use this company and at first had a few issues I wasn't quite confident in how they would stand behind their work but I must say they've been 100% upfront and they've been very professional in handling of all my issue that I've occurred I would recommend them highly read more

I am very pleased with their service. On the hottest July day in 2018 my ac stopped working. They arrived within an hour, got it working temporarily until they could replace my 28 year old unit 2 days later. I've used them for last 10 years for servicing my furnace and ac, the technicians have been punctual, friendly and always clean up after working. I highly recommend,, read more

We've been using Gleason & Elfering for years. G&E has installed our furnace with a humidifier, our central AC and most recently our gas hot water heater. They also do our annual check ups. The office people are courteous and the technicians are courteous and prompt. We've never had a problem with G&E............so they get five stars! read more

This outfit has cost me nearly $600.00 in needless repairs to my air handler. After a few repair visits I was told i needed a new sequencer. The tech disappeared and I waited and waited. I had to call the company to find where the repair tech went. I was told they thought i didn't want the repair. What???! In winter and my heating was struggling and it was cold in the house. I was told the heating system was trying to heat the entire house with one element and the sequencer needed to be replaced. After nearly 4 weeks went by he shows up with the part. After a HUGE electric bill, I called someone else. Guess what. He finds that the sequencer was the wrong part AND the tech from G & E didn't even put on the jumper wire it needed to operate correctly as the one element was still trying to do all the work. If it had gone on any longer the new elements that I had installed would have totally gone bad. I repair bill?? Only $80.00. And after I spent $600.00 on G & E's bullshit work. During the summer of 2015 I had G & E out to get my A/C unit ready for the summer. Of course I was told I was going to need a whole new unit and even a whole new air handler. They sent out a sales rep to try to convince me i needed all of this. By the way, the summer before that I overheard 2 of their men talking just outside my patio door saying they were going to convince me I needed a whole new compressor...after all, I am a woman, what do I know. Sorry boys but I am NOT new. My father had his own business in heating and air conditioning and I KNEW I wasn't in need of a new compressor. After so many years of having G & E out to service my unit, and after Roy retired, this outfit has gone to hell with it's dishonesty and overcharging and trying to sell something the customer does NOT need. It seems it's all about selling unnecessary equipment to an unknowing customer. $600.00+ in repairs and me on a fixed income was criminal as well as the techs trying to pull a fast one. I am done with you people and believe me I have been telling everyone about this. The BBB needs to know as well. It is pointless to even try for a refund of my money. All I will hear is excuses. The work never fixed a damn thing. CROOKS. Stay away!! read more

NO SHOWS - We had an appointment block of time scheduled with them and they did not show up....no call from them indicating that they were running late ( which we would have understood, and would have excused).....no communication from them whatsoever. Very unprofessional. They have lost a customer. read more

We have used this company since we moved into our home in May of 2012. All of their service people have been professional and honest. We recently had an issue of the heat going out because of the severe cold we have been experiencing. They showed up promptly and solved the problem. A few days later, the heat went out again (not the fault of the company but due to some faulty PVC piping on the outside of the house that kept freezing). The technician (I think his name was Jason) came out twice to fix the problem at no cost to us. I think any time we have had a charge, the prices are very reasonable for both labor and equipment. I would definitely recommend! read more

Their technician was friendly and very informative. He was quick to diagnose the AC problem and fix it. He informed me about the age of my AC unit (21+ years old) but was not pushy about having it replaced. Just a fair warning that it is not as efficient anymore and may cause more frequent issues in the future. The price was lower than other companies quoted. I called them at 9 AM and they were here at 4 PM as promised. This was the third day of high humidity and all the companies I called were very busy so I was pleased with the ability for them to even show up the same day. I will recommend this company to others. read more

All of their service people have been professional, but they don't know how to follow plan;s i gave them a set of drawing;s and they still installed the unit facing the wrong way costing me a few thousand dollars in extra's and they are not in any hurry to make it right my next move mite be the court system I would not recommend this company..if you go on there web site you will find Testimonials about how happy every one is.but there is no where to post a Testimonials seems fake to me. read more