McNally's personnel treat their customers like they themselves would like to be treated. Clear communication. Pricing up front. Explanation of services performed. Date of service left on McNally's sticker on unit for homeowner reference. Our experience with Esteban was brilliant. 100% will call McNally's HVAC again. read more

Our AC unit would not turn on and was able to get a service call out within a couple hours. Jimmy checked out the unit and quickly diagnosed a blown capacitor. Replaced the part and got it running again. Cleaned up the unit and area after. Used my coupon and got $35 off the call. Well worth it. Great technician and service! Would recommend and use again. read more

Crazy that it's almost May and we need to use our heat but we do and mine went out. I called McNallys in Saint Charles and Esteban was here in less than an hour. I've never met a more kinder tech He CLEARLY explained the problem and had it fixed immediately. if you live near Saint Charles PLEASE give this company your business. They are Wonerful!!!! read more

I had McNally's do some work back when they were starting off. The level of work, competency, customer service and price back then were great. Fast forward to recently. I had a McNally's technician come out. He was doing some work on the furnace and I wanted to observe. He clearly didn't want to be watched, and made a snide comment. I felt it was totally unprofessional and rude (especially considering I'm paying for the service). They replaced a capacitor that can be had for $9 online and charged over $150 for it and it took 2 minutes to replace it. At the end of the day a company that charges fairly for inexpensive parts (2x or 3x but not 10X!) and service, and doesn't make a homeowner feel guilty for observing (not interfering) with a contractors work, will go far. McNally's needs to do a better job on training their "best" technican on what to and what not to do while interacting with a homeowner. There's more to customer service than merely fixing the problem. read more

Call another company - Poorly managed - does not stand by their work. I had my furnace serviced 15 days ago to insure it was ready for the winter. 15 days later when I turn it on to use it for the first time - it doesn't work and the want $135 to come out and $335 hour after - read more

Jay from McNally's Heating and Cooling came to our home today to fix the gas boiler. He came on time and gave me a 15-20 minute heads-up call prior to arrival. He explained what he was doing every step of the way and answered all of my questions. Very good listener. He gave me options, which I really appreciated. Jay was pleasant, efficient and very professional. Highly recommend McNally's Heating and Cooling! read more

McNally's has been our go-to source for residential HVAC for more than two years. We've been super satisfied. They are excellent in every respect. Professional, courteous, prompt and highly capable installers and service reps, and you definitely get the sense they work as a team. They go the extra mile to make sure everything is working. Responsive phone service. Easy to communicate no matter who you need to talk to. Flexible scheduling and quick response to emergencies. High quality products. Very reasonable pricing and good preventive maintenance plans. They do what they say. They've been in the community for a while now, and I think they'll be around for a long time to come. read more

Saturday morning in the wee hours, we were awakened by a very loud humming noise. After misdiagnosing it's genesis and location ourselves we called McNally's on Monday afternoon. They scheduled us for an 8 am apptmt on Tuesday. John arrived right on time and had the problem identified immediately. Very satisfied with McNally's and John! read more

I am 100% satisfied with my new furnace and A/C installed! I moved in a new house with a 26-year-old AC and 1 19-20-year-old furnace. Barely made it through this winter so I finally called McNally's through Costco's sale booth. Pete and Ryan came on time last Friday, took a complete whole day to get it all done so nicely. Pete even customized the filter tray in my tiny utility closet to fit the furnace in and made changing the air filter on my own an simple task. They both are experts in knowing what they are doing. After thorough testing to make sure the new heating and cooling system + new thermostat are working properly, they cleaned up the work area completely and took off. I am so glad I chose McNally's thanks for the right products recommended by Lou the sales representative. I chose the 2-staged variable speed Lennox furnace. It is a completely different level of comfort and quietness with this new heating and cooling system. Thank you for bringing spring into my home! read more

Great service from McNally's. They had installed two humidifiers on my furnaces earlier this year and was very happy with their work. I just called then this morning for an emergency fix for one of my furnaces not working. From the time when I called into their office until repair complete and furnace was working, only 1 hour. Unbelievably responsive! read more

We had McNally's out in early September to check our heating and air conditioning as it was very humid in the building (a commercial building). They checked our systems and said the first floor units were fine but the second floor AC units had problems. They recharged one 2nd floor unit and that fixed it. The estimate on the 2nd was too high so we deferred fixing it. They also measured all the units for replacement sizes and cost. The humidity problem was never solved. Now it is late October and one of the the 2nd floor heating units does not work - the first time we turned it on. Plus, we never received the information on cost and size for replacement units - despite them sending out a separate technician (which we paid for) in the original visit. They were courteous, but that's all I can say that is positive. read more

Very responsive service, reasonable pricing for a service call (diagnostic) and subsequent followup visits to provide a fix. My technician, Jon, was professional, courteous, and personable. I would definitely call McNally's again for my HVAC needs and would recommend them to anyone looking for a locally-involved company. read more

Mc Nally's has taken a step or two down these days. Technician is only interested in installing parts and not problem solving the issue. This is the 3rd blower to be installed in a furnace that is 10 years old. There is a problem but not willing to listen and solve it. Also, technician and company office not willing to give me an itemized bill - who does that? Of course with the internet, I was able to see cost of blower and figure out company was bringing in a lot of money. I definitely OVER PAID. In their defense, technicians in the past have had the experience/knowledge to solve problems. But not now. I cannot use them again, just wasting my money and problem still exists. Be careful! read more

I realize that they have you by the stones when you call them in the winter with no heat, but I definitely feel like I was taken advantage of. Their repair man diagnosed the problem and said that it was still under warranty. I felt good about that because he told me the part was around $400. Somehow, I still ended up paying around $400 for an hour service call. This included $95 just to show up, and a $30 "warranty processing fee.". What was I going to d, say no? With no heat and $95 just to drive to my house, like I said, they had me by the stones. The company that originally installed my equipment was unavailable, so I went with McNalley's because they seem to be the most recommend in the area. After they left, I called the original installer and he said they sell that part brand new from the manufacturer for $75. Seems to me that the tech never intended on following through with the warranty. He wanted to sell a part and get paid for his time. I urge everyone to ask questions, get second opinions, and if something seems odd, question it. I suspect this isn't the first time this has happened when they "have a customer by the stones." read more

I recently called McNally's Heating and Cooling to have my A/C unit serviced since it was tripping a breaker after running for a little while. From scheduling my service call to the actual technicians work, I have to say that I am very satisfied with their service. The technician, Esteban Barrea, was immediately able to assess the issue and he had all the necessary parts to repair my A/C unit on truck. He was courteous and extremely knowledgeable explaining everything as he completed the work. He also cleanup up the area he was working leaving it just as it was before he arrived. Because of this experience I will definitely be recommending McNally's and call them again should I ever need HVAC services. read more

They lived up to their 5* rating. Sales rep was very knowledgeable and provided the pro/cons to each ac/furnace option. The installers went above and beyond. The original plan for instillation proved to be a less than desirable option aesthetically, so together we brainstorm some alternative options. Despite a larger effort, they went about their business with pride and great professionalism. read more

The technician is very knowledge and efficient as well. He told me that Puron level with my AC unit is low and needs 2-4 pounds charge. But the cost is at $80 per pound. The wholesale price of Puron is about $3.6. The company charges 20 times more than material cost. Unbelievable!!! read more

Thanks so much to Esteban for going out of his way to find some hard to find items for a house I am flipping, not only did he find them items but he also had them to me on the same day. Great company, great reliable & knowledgeable employees! read more

Great company! They are always eager to help you with any problems you have with air or heating services! Nice friendly staff, aswell as great work! And very decent pricing ....we have had them service our air conditioning and heater! Also great work cleaning out our dryer vent! read more

Had very good experience getting a new furnace and A/C system. They were able to schedule the work quickly (as I was leaving on a trip), the work was done well and the end result has worked flawlessly. The account rep, Russ Downs, was great to deal with. I had shopped around and obtained several other quotes, haggled pretty hard and the entire transaction was still very easy. Even with the short notice, I asked if they could move my A/C unit from one side of the house to the other. They did with no fuss. Happy with my choice. read more

New to area and found McNally's on Yelp. I called in for a preseason checkup. They arrived when they promised, took their time on my call, and explained the system as well as the steps for the PM check. HVAC is like the dentist- no one wants to call them , but when you find a good one- you appreciate the help. Thanks! read more

Brian McNally ... GREAT SERVICE! Called on a Saturday afternoon on a busy summer weekend And AC back on and working by 5:00 Sunday . Employee was friendly, quick, and thorough. Price was reasonable, especially for weekend service. Will DEFINITELY recommend McNally's to anyone who asks read more

I felt the price to replace a motor was high. Wish we would have gone elsewhere. Tech seemed over eager to replace the whole system.

Long time customer......I have left many 5 star reviews for McNally's, but this one should be a 10. We had an AC problem that could have been a financial disaster. They not only did the job in first class rapid fashion, but saved us a LOT of money. Thank you to John the tech, and Larry for being such professionals. I am not a family member or connected to McNally's in any way, just a regular customer. read more

If your website says Free Estimate - don't charge $95 I needed a ballpark figure on HVAC repairs, having little experience with HVACs myself. I went to McNally's website, and on the home page there is a button that says "Free Estimate." If you click that button, it directs you to a page with the option to fill out a form or to call. I called the number listed on that page and was very disappointed. The woman I spoke to would not give me a general idea of what a leaking furnace would cost. She said it would cost $95 to get a technician out to my house to give me an estimate. I offered to send photos of my issue, and again just asked for a ballpark figure. I understand that no specific quote can be given until the technician looks at the issue in person. She refused to let me talk to a technician. She did check with her manager, who apparently agreed with her. So not only is the customer service terrible, but the website is a lie. Do not go here. read more

The furnace at my rental property stopped working and my tenant had called 4 seasons. The quote they gave me was absolutely ridiculous. I then called McNally's and spoke to Brian. He was extremely knowledgable and even came out the same day to do the repair. I highly recommend McNally's because they are a trustworthy company with fair prices and they do a great job! read more

McNally's is great. Quick to respond, called when on their way, professional and polite, priced comparably to others, and fixed a problem that our other company used could not. Signed a year contract and will be using them again. read more

Jon was great. All I had to do is show him my furnace and he did the rest. The price was a lot less than I thought, and he was thorough with explaining the repair. I will for sure call again if I have any HVAC issues. read more

McNallys and their technician Jon have paid us a visit a few times. Each time has been like the last - professional, courteous , timely. Each time Jin walked me through the steps and what needed to be done. Would highly recommend! Thank you! read more

Furnace failed week before Christmas. McNally's replaced it and put in AC. Scheduled within days, installed in 6 hours. Everyone from the office, sales, installation and repairman was wonderful. Made it easy! Thank you!! Would definitely recommend. No worries, all was well for Christmas! read more

McNally's Heating & Cooling is great! They seem to really care about customer service. The office was great about scheduling a same day visit and letting us know when to expect the technician. Blake arrived on time and promptly got to work figuring out what was wrong with our a/c. He explained the options and pricing and did the work quickly, cleaned up after himself, and was very personable. We appreciate the level of service we receive from McNally's and will continue to be customers. read more

We recently bought a new home in Bartlett and the previous owners kept the house top notch. When the weather started to drop we decided to clean and check our furnace my husband has always done it himself and he didn't think twice about doing in the new house. Recently he noticed the furnace was not working properly, he did everything he could to it but when he says we need to call someone its because he's exhausted all avenue's. On our unit was a note from McNally's and it listed the work that had been done on the unit so I didn't second guess and I called them last night to see if they could come out. I spoke with Esteban a technician I explained the problem we were having just as my husband explained it to me and when I was done he said to me "wait is your husband there? Let me talk to him". Both my husband and I were taken back by this and since I had him on speaker my husband proceeded to tell him exactly what I told him. I decided I was going to go elsewhere. If the Esteban needs to speak with "a man" I don't want to deal with you. read more

Fantastic company. Knowledgeable and professional service techs and good equipment at a fair and honest price. I could not be happier with my furnace and A/C install, from start to finish. read more

Called at 8am, AC working again by 1pm. That's as good as it gets!!! McNally's always does great work and gets someone to us quickly. The price is always reasonable also. Thanks again! read more

Shout out to McNally's Heating and Cooling! Came out quickly and gave a fair quote, while providing us all our options for our home and needs! Was more than impressed with their promptness, friendliness, professionalism, installation expertise and attention to detail (and cleanliness!!)! Russ Downs, Ed McNally and the crew of Matt, Ryan and Tyler did an amazing job! Made something we have been putting off for a while, quick and painless! http://www.mcnallyhvac.com read more

I would def recommend this company. Their response and service is very quick. They will do their best to satisfy your needs and very honest.

We were very impressed by the timeliness and professionalism with which our call was processed. We will definitely call them again. Jon was knowledgeable and efficient with his repair and got our furnace up and running again in no time. McNally's prices were fair for what we needed. We couldn't have asked for more! read more

I have used these guys for several years and they have always been top notch. Tech's have always been personable, friendly, and professional. I would highly recommend them for all your HVAC needs. read more

For winter or summer, these guys are the go-to-pros. I've had to use their serveics twice, they are respectful, clean and thorough in their work. Very trustworthy and easy to schedule with. read more

We had a great experience with McNally's. Estaban the technician came to examine the furnace for the yearly check Up was polite and explained everything thoroughly. Before leaving, he made sure I understood everything too. Definitely recommend this company! read more