Mark was great. He came over to help me get my heat back on the same day I reached out. He did a thorough assessment and helped teach me a couple things along the way. He is super knowledgeable, communicative, and friendly. Highly recommend! read more

Mark has been instrumental in keeping our house's AC and boiler systems up and running for years now. The knowledge and skills are impressive to say the least. What also has us coming back is Mark's willingness to take on the challenges of our older equipment that some repair services won't touch. His transparency is refreshing as well. I believe Mark is an educator at heart. He talks you through his logic in a way that makes you feel at ease. Frankly, I don't know who else to trust. Highly recommended. read more

The best. Can repair and fix anything Highly recommend. Definitely should use. Without hesitation. 5 Stars read more

Mark was great! He quickly diagnosed and fixed the issue with our furnace. He was very friendly and definitely knew his stuff. Thanks!

Mark bailed us out big time when our HVAC igniter abruptly failed on a Sunday right before Christmas. I can't recommend him highly enough.

Excellent Company. Mark diagnosed problems that other companies could not. Thank you very much. read more

Had a previous AC company come out and tell me I needed a new unit. A friend referred me to Mark - he added refrigerant and performed rigorous calibration to make sure it was the correct amount. he also educated me on how to change a fuse in the unit if it ever had the same issue so i wouldn't have to call him again. Saved me thousands on a new AC. He is extremely knowledgable and a real pro. read more

I have used Mark's services several times now and he is always fast, knowledgeable and friendly. I've stood by and watched him while he worked and he points out and explains every part of his processes so that you understand what and why he fixes something. Very helpful. read more

Mark is always so responsive and reliable! He's very knowledgeable and professional - His availability is unmatched, he answers text and calls right away and he's always on time! Mark is very friendly, informative, and a joy to work with. Will recommend his services and company to all of my friends and family - 10/10 read more

Mark is awesome! He just left my house about an hour ago and got the furnace up and running in no time during this polar vortex. It's clear that he is very knowledgeable and passionate about what he does. He walked me through each thing that he was doing so that I could hopefully take care of the issue on my own if it occurs again in the future. My wife and I contacted several other companies, and all just routed us through a call center where our name, address and phone number were taken, and then we never heard back from them. Mark answered the phone on the first call! He had me text him my name, address and some pictures of the furnace, and he showed up ASAP! I highly recommend Mark! We'll definitely be using him again in the future. read more

Mark had like every single component crammed into his van so there was no need for him to go to the supply house to get the electrical device that failed on my system. He had my system up and running within 35 minutes of getting to my address and the first 10 minutes we required just to get on the roof. He charges a fair rate most importantly the total invoice is below others because he has the components with him. I'm not even talking about the universal type, but actual exact replacements. Overall, fantastic work! read more

Sunday morning in the dead of Chicago winter, I wake up to a thermostat reading 55 degrees. I try changing my furnace filter, but that doesn't fix the problem. I call other services and all I get is voicemail and answering services. I finally look around yelp and find Mark. I call, and he answers immediately. I text him my name, address and photos of my furnace as requested. Mark is at my house in 15 minutes, and has my problem diagnosed in 5 minutes. He had the proper part in his truck, and he gets it done very quickly. My furnace is working. My house is no longer cold. Mark's price was fair, esp. since he came immediately on a Sunday. Very pleased...and warm! read more

We hired Mark for a AC issue, he came over within the hour! He did quick work and went above and beyond to save us money! They are friendly, respectful, and worth every penny! My go to HVAC company in Chicago. read more

LOOK NO FURTHER. MARK IS THE REAL DEAL. I am very suspect of most repair people. I have been sold a bad bill of goods too many times. So when our AC (Spacepak) stopped working on the hottest day of the year and couldn't hold out a day for our regular guy, I got desperate by 4pm and found Mark. And I only wish I had known about him years earlier. If he's short on the phone, it's because he's a man who is focused on what he's doing and, after spending the hottest day of the year with him, I know that he's freaking smart (see 'engineer'), does the job right and doesn't over charge you for it. Watching him work, he shared how he was assessing the problem and his plan to fix it. He wanted to show us how to clean it ourselves in the future to save us money. And when we couldn't take on the messy job ourselves that day, he took on the tedious, extremely laborious task of cleaning our compressor when other companies had told us to replace it. He said no way it was actually the Cadillac, but there was a trick in how you maintain it. That alone saved us thousands!! He was so good on the AC, I brought him in to assess our aging steam boiler which is a lost art and everyone just says replace without even really assessing it. He's got mad skills and although I was worried about the higher initial fee, I realized that he actually figured out what was wrong in that time and saved us money in the end. He's a rare, reliable gem in the sea of shifty schisters who will take your money without even fixing a thing. read more

After a good start, a reply within a day and a promising call, silence. No replies to messages, no communication at all. I reached out 3 times after the supposed time he was going to get the parts, and nothing. In my opinion, this guy is not worth your time. Definitely avoid. If I could give 0 stars, I would, what a waste of time read more

I contacted this company through Yelp as we were having some a/c issues and they were pretty quick to respond, within an hour of my message. Set up a general time for the next day and so the next day I waited. And waited. No call, no show, no nothing, never heard from them again. That's too bad as I would have liked to help a small business. Two stars for the quick responding but be aware that the no call/no show could happen to you. Edit: To respond to the comment -- I did text you my name and address that same day you responded to my Yelp message as it was indeed the first thing you asked for. I am not confused about who I contacted. You were to arrive after 1:30 the next day in Humboldt Park. I guess you deleted the message or forgot. I'm not trying to hurt your family; in fact I was trying to give you business. Based on your great reviews, I wish it had worked out but I will not be blamed for your no call/no show. Further edit: if you check your Yelp messages you'll see that I contacted you. read more

I could not be happier with my experience using Pasieka Services. My air conditioner stopped working (very weak airflow) and the house was no longer cooling. I called around a few different places - no one else answered or even called me back in the same day. When I called Mark, he answered right away and promptly scheduled a time for later that evening to come out and take a look at the problem (even though he was booked solid, he still made time at the end of his day). Not only was he able to come earlier than originally expected, but he was very communicative and texted me his ETA as soon as he was on the way. Mark quickly diagnosed the problem and went right to work with fixing it, despite the fact that he was getting into a messy situation (the previous company that installed the water heater and furnace left the area in a condition that made it difficult to repair the problem with the A/C). The problem is fixed and the price was very fair, so I highly recommend Mark for any HVAC needs (or really anything else electronic-related - he can probably fix it, whatever it is). read more

As we say in Chicago "I got a guy for dat"........ Mark is "our guy for dat!" Mark from Pasieka Engineering has been a Godsend for our business and home operations. We would not even consider using another company for our service needs. Mark installed a 50 gal water heater at our home yesterday, and once again did an exemplary job! Excellent, on-time, competent service with a get it done attitude. Mark possesses the ability to think outside the box to resolve those curve-ball issues both electrical and mechanical that come up from previous service work had been done incorrectly. Over the past 20 years we have used many other services for refrigeration & HVAC with limited success until we meet Mark. We have referred Mark to some of our closest friends and received nothing but glowing reviews about his professionalism and skill set. He has been able to keep all of the HVAC and refrigeration at our restaurant and at our home humming along for the past three years. What else can I say that I haven't said already, other than ..... Mark is your guy! read more

I almost didn't write this review, because I wanted to keep Mark's services a secret so that he could be on-hand the next time I had an HVAC issue. A strange low-frequency buzzing noise was coming from my walls whenever the A/C was on, and out of all the people and companies I called (~10), Mark was the only one who: a) responded immediately b) had availability within the same week c) seemed to have an idea of what he was talking about Everyone else was too busy, didn't respond, or had no idea what my issue was but wanted to charge me $300+ for a house call anyway. Mark was fair, knowledgeable, and walked me through what he was doing step-by-step during the repair process. (He also gives free science lessons along the way if you're interested.) I hope I won't need his services again soon, but if I do, I won't waste my time calling anyone else in the future. read more

I called Mark after my tenant complained about the CO detector constantly going off. It was pretty early in the morning and Not only was Mark open but he answered right away. After explaining the issue, Mark made time I. His schedule to get to the unit to evaluate the problem. It was pretty late by the time he finished but his work left my tenant happy and feeling secure. read more

Mark was awesome! We discussed the problem over the phone and came to a few conclusions. They job ended up being bigger than anticipated, but Mark completed it with professionalism. Its always difficult as a customer to have a job start during the day and have it end when its dark. Even though the job took much longer than expected, the price was fair. Mark cleaned the coils on my AC unit even though they looked as if a small dog had crawled inside the unit. He fixed a design issue that the installer clearly missed (leading to the problem in the first place). Don't hesitate, call Mark. read more

One of my tenants called me on Saturday to let me know her heater wasn't coming on. I called these guys and Mark was able to go out there a couple of hours later and take care of the problem, needing only to replace $30 part. He could have just as easily made up some other problems and, as an out of town landlord, I wouldn't be able to question it since I'm not there. He was prompt, efficient, and honest. read more

I have worked with Mark on several different projects and every time he has always come through on time and budget. He is always available to discuss questions and problems. He has just fix my pinball machine and I highly recommend higher his company. read more

Pasieka Engineering - Heating & Air Conditioning/HVAC Near Me - Chicago, Illinois

This is your go-to guy! Believe me, this is the guy you want to know! Mark has emergency-serviced our AC, not once but twice. He has come late-night and early morning to help us out. His prices were honest, fair and he was able to fix our problems both times on the spot . I feel so lucky to have come across Mark. This is the only person I'll ever need to call again. Thanks so much Mark for your excellent work! read more

Mark is amazing.... he comes out when he says and was in wicker park when I called so was here in 3 hours. Explained everything and told me how to repair the remaining two condensers in my 3 flat read more

This was the first time I used mark to repair a furnace. I was expecting him to schedule a visit sometime in the next week, but he immediately bought the part, brought it over, and the furnace works again three hours after calling. He even told us how to get better performance and efficiency out of our furnace that we weren't getting because of the way it was installed. Thank you Mark! read more

This review is a bit overdue.... Mark was great, such a pleasure to work with - not only did he come out of his way to help out it was on a Father'sDay! Although he came out of his way and we couldn't actually do what we needed to do (our fault not his), he was able to walk me through the change and label our wires accordingly. Super down to earth, helpful and knowledgable. We will be calling him for our next electrical needs. read more

My girlfriend had a problem with her apartment's external mounted A/C unit, which when started for the first time this summer was making a loud clanging noise. She called the number of the company on the outside of the unit, and they sent out one of their guys in a works van who arrived without a ladder, and who wasn't of any assistance at all - not even to discuss potential problems, contingencies and costs - other than the price of a whole new unit. She cancelled the follow-up call out from the same company. A friend gave us Mark's number, and despite him being busy (and I can easily understand why) within minutes of his arrival he'd diagnosed the problem from a preliminary inspection, given us the likely cause, and went out of his way to effect a cost-effective and truly 'tailor-made' solution for my girlfriend. If you're looking for a customer-oriented air conditioning engineer, look no further. I cannot say enough about how impressive Mark is with his knowledge, his integrity, and his approach. I've dealt with a fair few professionals in my time, and I used to work for the world's largest real estate sales organization in the northeast, and you don't come across people like Mark very often. He's a keeper! Outstanding man, outstanding service. read more

Mark is very good at what he does... Shows up on time very fair on pricing and explains exactly what he is fixing and or replacing. Highly recommended! read more

Mark was great! Our air unit broke down, and he got it up and running in no time. Mark explained everything to us, and was very passionate about his work. I hope our AC unit doesn't break down again anytime soon, but if it does, it's in good hands with Mark. read more

I had the unfortunate luck of my AC going out in a rental unit on one of the hottest days ever. Mark was nice enough to squeeze me in at the last minute and was available the next morning (other places I called needed 3-4 days). Mark was able to diagnose the problem right away and get it fixed soon after. His pricing is fair and I strongely recommend Mark 100%. read more

I have used Pasieka Services twice now. Once for myself and once for my Dad's house. Mark's knowledge and experience just surpass anybody else. He is extremely reasonable on price. The first time I used him, his price was several hundred dollars cheaper than the next closest price I was quoted. Amazing service all around. read more

Mark was awesome, great attitude and a true problem solver. There is no BS with him and always showing you and teaching you along the way. Really recommend him! read more

As cliché as this might seem my situation was something right out of a commercial. My wife and I are first time homeowners and on a Sunday in the middle of winter our boiler goes out and we have no idea what we're going to do. My wife finds Mark online and we call him. He responds right away and is at our home within the hour. Total professional, very smart, and was more focused on fixing the hot air instead of being full of it. He was able to pinpoint the problem and fixed it at a real fair rate. That would have been enough reason for 4 stars but he also went above and beyond on teaching me things about the system as well as some general things in his purview. He took off his proverbial engineer hat for a second and was just a guy who wanted to help some new homeowners. No hyperbole, his kids should be really proud of him. He's got a customer for life. read more

Mark did an amazing job. He was honest and efficient. I will be using him for all my HVAC needs from now on.

The owner, Mark, was recommended through a neighbourhood Facebook page. He arrived within 3 hours of calling, and had our two water heaters back up and running within a couple of hours. He is a super nice guy, REALLY knows his stuff, was educational in all of my options, and was reasonably priced. I know who I am calling in the future for service and new install! read more

So very happy. Had a puzzling and complex problem that Mark was able to troubleshoot and resolve in an hour when other companies literally turned down the work. Fast response, on time, great communication, fair rates, nice guy as well. Highly recommend! read more

Mark was great! He got here in less than a day after we called him to fix the AC. It was quick and it was painless.

Mark has done numerous jobs for the bar I work at and he has gone above and beyond with his professionalism on every project he's done. Will hire again. read more

Mark was the only of 8 companies that answered his phone on a Friday afternoon. Couldn't come out on short notice but gave some great advice for free on how to fix my problem. Thank you!!! read more