We have used the Heat Engineering Company for well over 30 years for our HVAC and they have been outstanding. Our usual service tech is Jeff, who is excellent. We have had annual maintenance contracts with them over the same period, they are professional, and get the work done correctly, consistantly, on the first visit. read more

Bryan came out to my home on 10/23 to give me a quote on a new furnace and air conditioner. I spoke with him on his cell, texted him and e-mailed him. Each time he promised to get back to me shortly with a proposal. It's been 8 days and I still have not heard back from him. If Heat Engineering is not interested in my business, they could have at least sent a polite email. They are literally blocks from where I live. I am very disappointed in Bryan's no response at all. read more

Heat Engineering is awesome. Brian in the office, Laura the office manager and the Installers! My water heater started leaking and got worse overnight. I called around for pricing and then I called Heat as referal from another contractor. I called Brian and he got his guys out the same day on short notice and it was a Friday! The communication between myself the office and the installers was great! They came and removed my old and replaced the new with a larger unit and the install is clean professional and looks like pride was taken in the work done. All for a competitive but fair price! I will use Heat for all my HVAC needs from now on. read more

I couldn't be happier with the service I received from CJ's family-owned HVAC company. The entire process is smooth, professional, and handled with care. What sets them apart is the personal touch. You can tell right away that they take pride in their work and truly care about their customers. The technician arrived on time, explained everything clearly, and worked efficiently to get our system up and running. It's rare to find a company these days that combines technical expertise with honesty and a neighborly attitude, but they've nailed it. I'll definitely be calling them for all our future needs--and recommending them to family and friends as well! read more

Louise K. Hinsdale IL I've written this review a couple of weeks ago, and word for word it appears under the name of Louise K. IN Engleside VA. THAT IS WRONG. HEAT ENGINEERING OF COUNRTYSIDE IL DOES NOT PROVIDE SERVICE IN VA. Jun 18, 2025 I've relied on Heat Engineering for nearly two decades to keep my HVAC systems in top shape, and they have never let me down. What sets them apart is not just their reliability as a company, but the continuity and personal connection they provide through long-term technicians. For almost 20 years, I've had the same technician, Matt, service my HVAC systems--first at my house, and later at my condo. Having someone who knows both my building and is familiar with the specific systems offers a real sense of reassurance. Matt's knowledge, professionalism, and consistency have been exceptional. It's rare to find that kind of continuity these days, and it speaks volumes about the company's values and quality of service. I highly recommend Heat Engineering to anyone looking for a dependable and experienced HVAC service provider. Their team--and especially Matt--has earned my trust and appreciation time and again. read more

We have worked with Heat Engineering Group for the for the past 10 years. They are very professional, very knowledgeable and easy to work with. They are fairly priced and I would not even consider using anyone else. read more

I needed to purchase a combo furnace/AC in my condo. The representative came out and then promptly sent me a quote via email for review. They were flexible on scheduling an installation date. The technicians were courteous and efficient. I have had the unit about two years now and have zero complaints. read more

Did a great job at answering all my questions, was timely and efficient, and everything felt really professional. I would really recommend these guys, they know what they are doing. read more

Representative from the company arrived on the hottest day in May as our air conditioner went out. We were told that he'd go and get new parts to reboot the system. He returned, installed the parts, waited for maybe 10 minutes and left. The house did not cool and within the hour, the whole unit blew. This, after charging $165.00 for parts, and the service call on a Saturday was $330.00 for maybe 30 minutes of work. I have since been told that his "fix" is what totally made the unit unfixable. When I called to inquire, I was insulted by a male employee as to why I did not ask for the parts he installed during his "fix", when we chose to go with another company. Why would I ask for their parts~!? Anyway, he did refund me the amount of $165.00 parts fee, but not the refund of the service charge of $330.00 for 30 minutes of time. Rip off!!! Don't bother with this company. read more

The Service tech was very knowledgeable about our unit and explained the importance of changing our filters

Excellent service I replaced a 30 year old boiler. Bryan found a boiler in my price range. The day they installed on time a two man crew removed and installed. Then a another two man crew did the wiring and started her up. The new boiler is amazing and is energy sufficient. They did excellent job installing and cleaning up. They really have professional workers on there staff Jenn read more

These guys are great. Bryan helped me with my a/c and furnace replacement. He was very personable and informed me on all my options. We scheduled the replacement and two service guys showed up on time, completed the job with no issues, and left their work area looking spotless when they were done. Highly recommend these guys! read more

Called Heat Engineering late at night and they came out at 2am to fix my furnace. A true 24/7 service. They did amazing work.

Extremely satisfied with the service The Heat Engineering Co provided! They helped me support at home and get set up for my business as well! Super happy with this group. I have referred them to my friends and family in the area and will continue to do so. Easy 5 stars! read more

My furnace reached the end of its useful life. The Heat Engineering salesman pointed out that the furnace was actually too large (100,000 BTUs) for the size of the house, and they replaced it with an 80,000 BTU Carrier, 95% efficient furnace. I've been happy with Heat Engineering's services while living in two houses. With my annual service contract, I rely on their experienced technicians to keep my HVAC system working properly to avoid breakdowns during extreme conditions. I highly recommend this company! read more

Everything was positive plus. On time, organized, neat, respectful, went out of the way to do the job. They put a furnace in and did A FANTASTIC JOB customizing the return line. I am very happy with this organization. They hit it out of the park! read more

I called very early this morning for emergency service. It's 87 degrees in our home. My husband just came home from the hospital. He's not doing well with the heat. Called 3 times. Finally, told they could come between 12 and 3. This is a life threatening situation and they are callous to it. Have been waiting 2 1/2 years for sales person to get back to me regarding an 80 gallon hot water heater. Luckily, I called ABT the next day after he was so wishy washy. I had it in 12 hours. I've had this company for the 48 years that we've lived here. They were wonderful, but within the past 10 years, that is no longer the case. This will be the last time I do business with them. And now, only because I just paid over $500 for a service contract. Supposed to get you preferential treatment. If they threat a long loyal customer this way, what do they do to the new ones??? read more

I had a new central a/c unit installed about one year ago. Cost $6,000 Over the past few days,excessive water drainage started. Today's service rep, Steve, came out and was wonderful. He worked very hard, was prompt & knew what he was doing, He explained that the problem was a clogged vinly drain pipe. The pipe was from the original a/c unit that was replaced last year. I don't understand why the original drain was not replaced at the same time the new unit was replaced. I would have even paid extra to have it installed, had I been offered the option. The end result: Service charge of $150 per hour Total bill: $347 I called the office and was told that the drain pipe is not part of the installation of a new unit. I would not recomend them, especailly at $150, plus the fact that I should have been offered to have the pipe replaced when the new unit was installed. In addition, since the service rep did not have vinyl drain pipe with him, he needed to go out & get it. I was charged for his travel time!!! Why should I be charged for travel time when HE did not have the part As a result, an additional service call that could have been avoided at $150 per hour. Be careful if you do business with them and inquire about the hourlly rate before you agree to any service call. I'm sure there are places in the area that are equally as good and much less expensive. read more

This review is for a quote on a new AC install. Bryan was very knowledgeable about the product and about installation. Their price was also very reasonable. If you are in the market for a new AC check this company out. read more

Do NOT USE. They came in to do a service, fixed the initial issue, did a service check of both systems, which stated filter was checked an no issue. 2 days later very little heat, called back and they charged me 111.00 to replace a filter they said was fine 2 days prior. I get it I should have checked it, but they were just out, fixed a sensor, said the filter was good and 2 days later no heat, so assumed something wrong with the sensor again. Refused to remove the cost. DO NOT USE. read more

The Heat Engineering Company installed my furnaces and air conditioners in 1988. They have checked and repaired them as needed and done a very few replacements. I would highly recommend them as being available reliable and efficient. MM Oak Brook read more

We had a terrible experience. The day we moved into our home (a Friday), a representative from Nicor alerted us that our boiler/water heater exhaust was not properly insulated or sealed. Because they noticed the problem (though it had likely been that way for years...), he was required to cut gas to the area until the issue was remedied. The Heat Engineering had previously serviced these units, so I called them to come and make the quick fix so we would have heat/hot water for the weekend. I called at 2 PM - they said someone would come out 'promptly.' The service person showed up at 4:30, said that dispatch gave him the wrong summary and he didn't have the materials to handle the job. He said he knew what was needed and would come out on Monday to fix it. When we asked if he could come on the weekend (because they came unprepared despite our accurate description of the problem) they would not budge on the weekend fee so we opted out. It was unseasonably cold and we have two small kids - no heat or hot water our first weekend was not ideal! I took the day off Monday and when I was not given a courtesy call by 8:30, called to see the status of our service appointment. Dispatch said 'something more important came up' and promised he would be out by noon. When no one arrived by 12:30, I called again and was told that the job that bumped us was taking longer and they could be out on THURSDAY. No thanks! You can imagine my surprise to receive a bill for over $200 for a 10 minute visit (we were charged overtime hours when they took 2+ hours to come out) where no work was done. When we called to express our surprise, the account person we spoke with was unapologetic and gruff. When we were stood up by The Heat Engineering Co., I called Stadler (awesome company!) - they came out in 20 minutes and fixed the issue for LESS than we were charged by HE for nothing. Very disappointing and an expensive lesson! read more

I am a deaf adult widow. My husband told me to keep the services of Heat Engineering and I have and am very happy with their work. They take the time to text me so I do not have to sit and watch for hours for the repairman. This is great ! All the service people are friendly and take the time to write everything down for me. You cannot go wrong here, these are great people and great service. Karen G. read more

These guys are a complete ripoff! The charged us 635 bucks to change a control board on my new furnace. A very simple repair I later found out. The control board can be bought for $75.00 online. They took advantage of our anxiety from being without heat and major snowstorm that occurred the night before. We were without heat in our new home and quite worried and desperate. The technician Dave showed up the first time for ten minutes and charged 150. Then came back five hours later installed the board which took a half an hour another 175 charged. I was under the impression they were being honest but later found out from our new HVAC guy they completely ripped us off. I still have the invoice. Look elsewhere for your service needs. 325 for labor and 310 for the board completely ridiculous. Eric F read more

Very expensive! I wanted to support a local business and so scheduled this company for maintenance and repair of our two air conditioner units. Scheduled an appointment for anywhere between 12-4 pm. (Don't you hate that?) on Friday. At 5 to 4:00, still no service person, so I called. All apologetic, the receptionist said she put the order in the wrong pile and they could come out first thing the next morning. She said that as a courtesy they would waive the weekend rate! No other discount for their error was offered. They arrived 15 minutes late the next morning. Checked the two units - one had a freon leak. Couldn't find the leak, capped off the unit with additional freon and charged $545.25! Their are plenty of other HVAC companies around, skip this one. read more

After spending about $400 (it's around $100 to walk in the door and $120/hour), the furnace wasn't quite right. It is my fault but I waited to call them. It turns out they have a 90 day warrantee and it was about 95 days. They wouldn't honor their work. I will get it fixed right next fall. It won't be from them. I don't think anyone else is more expensive and they didn't end up doing a good job, or standing behind their work. Of course I am to blame as well for waiting a few days too long to let them know their repair wasn't right. read more