Absolutely as good as it gets! Terrific customer service; great technicians; job done to complete satisfaction. At first, I was quite disappointed b/c nobody showed up for the scheduled estimate appt. When I wrote to them to complain, I received a response the next morning - the no-show was a fluke due to a health emergency. The owner was at my door 20 minutes later to restore their good name and gave me an estimate that was more than fair to install a new furnace & A/C to replace mine that was 24 years old. Work was completed in one day and all is well. More than well, actually. I had NO heat for a week and the world is warm again thanks to Oasis. Look no further! They are outstanding! read more

Great company!!! My furnace stopped working on a cold winter day. I've called Oasis and they quickly scheduled the appointment and fixed the problem. Very friendly, professional and easy to work with. I highly recommend them!!! read more

I called Oasis Heating to get my furnace cleaned and checked for the winter. The scheduling was simple, and the woman with whom I spoke was pleasant and professional. Hani was the tech who came to my house. He, too, was pleasant, professional and knowledgeable. He offered some useful advice and thanked me for choosing their company. It was a completely painless experience and we are now ready for winter! read more

Great service, friendly, and really quick response. My furnace was on the fritz and Oasis was the 2nd company that came out to try to fix it. After waiting 24 hours for the other company to call back, Mike returned my called in less than 20 minutes and sent a tech over right away. My situation was complicated, but they stuck with me and didn't give up until I had safe, reliable heat. They were generous with their time, talked me through all my options and probably didn't charge enough for all their work. Thanks so much!! read more

In one month I got to replace water heater, dishwasher and air conditioner (YIKES). Called on Oasis for A/C as one of 3 bids. Oasis was the only service that didn't separate the expert and sales person. They were the same person. We do our homework, don't need to be "sold", just tell us what the pros/cons are of potential solutions and what it will cost. Best cost, best personalized service, and very happy we went with Mike and crew. We'll eventually get a new humidifier from them, the one Mike suggested. read more

This company is incredible. Called Oasis last night at 8pm for an emergency with my furnace. The owner Mike showed up at my house at 8:30 and got me up and running temporarily for the night. Had one of his guys at my house at 8a the next morning to make permanent repair. Can not recommend them highly enough! read more

Our furnace blew a fuse on the main board and we were suddenly dealing with a very cold house in November. I'm a pretty handy guy and have fixed our furnace myself a few times, but this one I couldn't figure out even after a whole night of working on it. We decided to give Oasis a try. We called them at 9am on a Monday morning, and the woman on the phone (who was very nice) took down our info and said she would have to check, but thought they could send someone out by noon! She called back within 5 minutes and told me that someone would be at our door in the next 20 minutes!! We were extremely grateful. Mike showed up at just about the 20 minute mark and went to work. He was extremely personable and had no problems with me watching him troubleshoot the issue while bugging him with lots of questions. He went through all the normal tests but the issue persisted. He said that it was looking more and more likely that it was a control board problem which unfortunately is a costly repair for Carrier furnaces because the board itself is expensive. I looked this up online, and while you could get a cheaper non OEM part for less, this was indeed true for the parts with the carrier stamp on it. Mike was even cool enough to offer to put in a used board instead to save us some money. I appreciated him giving us options. Long story short(er), the board turned out not to be the issue. Mike spent 2 hours troubleshooting (including the 35 minute trip back to his shop to grab spare boards) and finally discovered that the problem was a screw that had fallen into the furnace and had lodged itself into one of the components causing the short that was blowing the fuse. A screw! We had had some new duct work done recently and undoubtedly the stray screw came from that. In the end, Mike charged us the minimum charge for a visit, and was nice enough to give us a discount on top of that. He called it our "baby" discount as we have a newborn, but I think he just recognized how much it hurts to shell out $120 for someone to find out your problem is a loose screw. I was extremely happy that he found the issue...keep in mind that I worked on the problem for half a day and never saw the screw either (it was definitely not obvious). Mike could have easily taken advantage of the situation and charged us for the new board anyway. He was instead kind, honest, and sympathetic. I would definitely call them again. Thanks Mike! read more

I installed a new thermostat and it wasn't working. I am in the process of selling my home, so I need everything to be working. The answering service answered when I called, they took my information and I had a call back within 5 minutes. Within 30 minutes my thermostat was working and my furnace was working working properly (sensor needed to be cleaned). I would highly recommend! read more

CLASS ACT. Like everyone else - I found Oasis via Yelp -& based on their rave reviews I decided to reach out. I needed a new thermostat installed so I did a direct inquiry through their website & got a response almost immediately by Jennifer. After asking me a few questions, not only did I get a quote but I was also offered an appointment the next morning! Every other company I called it was going to be at least a week+. So I was very happy with the quick turnaround by Oasis. The next day the technician arrived to install the thermostat that I had purchased. In less than 24 hours I knew the thermostat was malfunctioning (of no fault by Oasis) & reached out to Oasis after-hours to have a technician come back to figure out the issue. They quickly responded & the owner Mike was at my condo by 9am the next morning. After a quick analysis -he knew something was not right -as the thermostat was not compatible with the heating system my building has. (Apparently the system in my building is not common/not something they see every day) He explained everything he was doing & how the wires didn't seem to match up, despite making every effort to see if it would potentially work. I appreciated his vast knowledge & knew I was working with a real professional of the trade. All in all - Mike ended up re-installing my old thermostat. In both of my appointments - neither technician was rushed & took their time to make sure all was right. HONEST company with great customer service & turnaround time. If I have a problem in the future, I will know who to call. Thank you Oasis. read more

These guys are excellent- at 11 pm last night I noticed my furnace was ruining but not producing hot air. Being somewhat handy , I figured out it must be the ignitor- so I called Oasis and to my surprise got a live answering service person - within 30 seconds (which makes it 11:20 pm) Mike the owner texted me to confirm he can get a service person 830 am - after explaining my issue with no heat Mike said he would have a service person at my door at 6 am . Well again to my pleasure, the service man Was calling my cell at 5:55 am ( he was smart not to ring my door bell as my family was still sleeping) to inform me he is stand on my front door. How awesome is that! He came and concluded it was the ignitor , pulled a new unit from his truck , replaced it , tested it, cleaned the sensor and everything was working perfectly again - all for $195 . These guys are professionals, polite , knowledgable, clean and priced right . Great over all experience . read more

My husband and I were out of the country when the furnace in our tenants' apartment went on the fritz during the first cold snap at the end of November. We were so worried they would be without heat, especially with a four-month-old baby, but Oasis sent a repairman out within twenty-four hours and a repair was made immediately within twenty minutes. The furnace worked, but it was old and we knew we needed to replace it, so after discussing it we called Oasis again to install a new one. We called on Monday and the installers were there on Thursday. The workers were on time, very professional, the install took only three hours, and was very reasonably priced. So far we have had no problems with it. read more

Oasis seems to have a lot of positive reviews on here but when I called them to schedule an appointment (this is another long story - see below for more details), the technician only spent about 5-10 minutes in my place and then declared that I needed an entire new AC system which would have cost me $4,000. My issue was that my AC unit dripping from exposed ductwork directly onto furniture. He said the leak could not be fixed and if he sealed that one hole, it would just start leaking somewhere else. He encouraged me to make an appointment right away to get it replaced and that I could always cancel later. However, I decided to get a second opinion. I called another company who was able to come out the same day and without me telling them what Oasis had said, he was able to fix the leak and correctly diagnosed what was causing it. He fixed everything for less than $175 and no other leaks have popped up anywhere else. WOW. I was not impressed with Oasis and I will never use the again. Also, it was really hard to even get Oasis to come out in the first place. All their calls are forwarded to a third party answering service who just take messages and then you are at their mercy to have them call you back. It literally took 4 phone calls to their answering service and several days before I got in touch with someone. Utterly ridiculous and extremely frustrating. I now have the other company (Green Works) on my speed dial for all my heating and AC needs (they also do plumbing!). read more

Naem from oasis heating & cooling came out to my home for a preventative maintenance on my furnace. Not only was he super friendly and professional, but he MADE SURE I knew exactly what was going on and fully understood all the information he was giving to me. He answered all my questions spot on leaving no details out and was very respectful of my home. I am very pleased with the service I was provided by Naem and I will definitely be recommending Oasis Heating & Cooling to friends and family. Thank you again! read more

I don't think I could've gotten luckier than last night when I called Oasis. It was -8 with wind chill, the Bears were playing Monday night, and I had no idea what was wrong with my furnace. After trying every troubleshooting tip I could find online, I started calling maintenance places I found on Google. At this point it was 9PM, everyone was working on double time, and I was fully expecting to have to drop $350-$400 on whatever was wrong. Oasis was the 3rd place I called. Mike had me send pictures of my unit to his cell phone, immediately was able to diagnose the issue, and actually stayed on the phone with me for 15+ minutes while walking me through the issue. Absolutely incredible service, I will definitely be referring them to others! read more

Mike and his team are outstanding. I can attest since I used them twice already and both times the service was excellent. About 2 months ago we needed to replace an old furnace with a more efficient model. The whole process from getting an estimate to installation was professional, on time and actually Mike made several recommendations that were cost economical and allowed us to save money later down the road. The team showed up on time, actually due to nature of my work, had to return the next day and allow another crew to finish another job and was fast and efficient. The price was very reasonable. Fast forward to today, lows were in single minus figures, my furnace stops working in the middle of the night. The house is old and not very well insulated so freezing was of concern. I was contacted back within a half- hour and technician was out within 1 hour fixing the problem. He was quick and knowledgeable. 5 star service and honest guys, will recommend. read more

They came out on a very cold day - after hours. They were very responsive, considerate, and very reasonably priced. Oasis Heating and Cooling saved us from what would have been a very cold night! read more

Chose this company based on Yelp reviews and they didn't disappoint. Joshua was the team member that serviced my furnace and he was great - on time, friendly, professional, explained everything and fixed the problem within 10 minutes! And pricing was very fair. Will definitely use again - and set up my annual cleanings :) -- and recommend them to others. read more

Extremely professional company. They fixed my furnace in about 20 minutes. Josh was not only knowledgable but was extremely polite. He explained the issue and said that if I had any further problems, he would come out again at no charge. This is a very trustworthy and reliable company. read more

Very satisfied. The crew was very thorough and careful and the equipment they installed looks top quality.

I used Oasis to service the furnace in my rented apartment while I was in a different country. Their communication was excellent and the whole process was very painless. After the work was done, they sent me an invoice and diagnostic report within a few hours. Will definitely use again! read more

Mike is awesome! Our furnace wouldn't work. My wife called another company (Crne's Environmental) that diagnosed our problem to be a broken heat exchanger, motor, and pressure switch. They recommended buying a new furnace. I called Oasis for a second opinion late on Friday afternoon. Mike came over and determined that it was a failed board. He put in a temporary fix so that we could have heat thru the night and had one of his guys come first thing Saturday morning to install the replacement board. He called after the installation to ensure everything was working fine. Now that's what I call customer service! I highly recommend him and Oasis!! read more

Josh came over for a free estimate and was the most polite and kind contractor I ever met! He ended up fixing our problem altogether! It looks like we just found our new HVAC guy! Thank you Josh! read more

We just got a check-up and Mike was extremely knowledgeable. He took the time to help me understand what we needed to do to keep things in good working condition and when you actually call Oasis for help. Fantastic! read more

Mike is a straight shooter. I had two other heating guys look at my furnace and still was left with expensive mystery. Mike came over and took the bull by the horns and immediately diagnosed the problem. I double checked his prices and found them to be fair and competitive. Equally as important, the work was done in a timely fashion as promised. Mike is a remarkably optimistic and empathic professional. read more

I highly recommend Oasis! I've been using Oasis for the past year to service my HVAC in preparation for summer and also winter. They've recently replaced my condenser which was installed over 10 years ago and had just given out. All my interactions have been positive. The technicians who do the work are friendly and knowledgeable and happy to share an honest opinion taking into account both expense and quality of product. I will definitely keep using them for all my heating and cooling needs! read more

Outstanding customer service. Oasis installed a brand new AC for me last year. When we found out this year that Freon was leaking, not only did Oasis refill it for free to ensure we could get cool right away, they came out a few days later and did a complete analysis, finally determining that the coil (one of the big parts) had a bad weld causing the slow leak. We were relieved to find out this was a manufacturing issue and not an installation problem. Oasis immediately repaired the leak with no questions asked to ensure our system works properly. We could not be happier with the integrity of this business. read more

Had Oasis out to fix my AC. Prices were higher than expected. I was given a quote at the end of the day and had to schedule another appointment to fix the AC. Meanwhile, my house was a furnace. I found another company who fixed it the same day. read more

Oasis was great to work with! My ac went out and after another company tried a remedy that did not work I decided to get a new ac and furnace (as I had also been having issued with it). I got three estimates (all from top rated Yelp companies) and Oasis was the best. Mike was right on time for my appointment and explained his estimate and then afterward emailed me a write-up with two options. His estimate was very reasonable (very close to one company and well below the other one). By the time I got all my estimates it was getting colder and Mike said he could get me in within the week and scheduled my installation for the next Friday. Two men from his team arrived right on time and got right to work. When they realized they couldn't get my ac unit through the small hatch to the roof they talked with the owner of the unit above me that has a deck that lets out onto the roof of my building in order to be able to get my unit onto the roof. This extra effort on their part saved time on the installation not to mention saved me money since the other way would have been to rent a crane. They worked super efficiently and were done before 2 in the afternoon. Mike even called me later in the day to make sure everything had been done to my satisfaction. I waited a week to write my review just to make sure everything was good with my new furnace and ac and I could not be happier. I am so thankful to Oasis! Not only did a get a new furnace and ac, I also now have an HVAC company that I trust! read more

Such professional service and such a nice guy. Mike came by and fixed everything. He was prompt and efficient, and he explained all that he needed to do. This company is the best heating and cooling company I have called. Call them. You won't be sorry. read more

I don't write many Yelp reviews but after the great service we received tonight from Fred and Oasis, I just have to. Our furnace went out this afternoon(Saturday) and with a 4 month old son, we needed it fixed right away. We called a bunch of other companies and the earliest they could get to us was the following morning. With the first snow of the year and temps in the 20's, that wasn't going to cut it. Oasis found time for Fred to make us his last stop of the day. Fred was friendly and knowledgable and fixed us up right away. Thanks so much Oasis and don't think twice before calling them for your needs. read more

When they say "and surrounding area" what they really mean is North of the loop. Their coverage map used to go down to 26th St but they updated it after I called to have my AC serviced. I gave them my address and was told I would receive a call the next morning from a technician. The call I actually received late the next day was from someone telling me they "don't serve South Chicago." It can't be distance, because if you look where they are located, they cover a huge range north of their office. Apparently they think the South Loop is too scary and dangerous to go to. They must not get out much or are living in the past. Overall I ended up talking to three people. One nice, one kind of rude, and one just so-so. read more

Great job by Oasis! My tenant's AC went out and Oasis responded quickly. The scheduling was easy and the technician showed up on time. The problem was clearly explained to me and I was quoted a fair price. There was a minor invoicing problem but that was handled quickly and without difficulty. Thanks to Oasis for a great experience read more

When I needed A/C service, I initially called another company that had been my "go to" HVAC contractor for many years. They were flooded with emergencies and couldn't schedule an appointment that worked well for me, but they recommended that I call Oasis. Over the past few months I've had the 'opportunity' to work with Oasis on a few occasions. Each time I have been pleased with the **prompt**, on-time, professional, knowledgeable, high-quality service that I received. Oasis Heating & Cooling is among few contractors who can be trusted to solve problems efficiently and are truly a pleasure to work with. Highly recommend! read more

These guys are great. They installed two wall units that work excellently.

Mike was very helpful with a routine AC inspection. The HVAC company that our building had contracted with recommended we replace our AC unit, but Mike inspected everything and said it was running fine and did not need to be replaced. He explained why we didn't need new equipment yet despite it being an older system, what to look for to identify problems in the future, and what features to consider when it is time for a new HVAC system. read more

I called them on Wednesday night and spoke with there afterhours people to make a service appointment. She took all my information email phone number and I was told that someone would call me back the next businees day. Well 6 days later still no call. I have made an appointment with another company. I feel that there system to call people back is more thank 8 hours that is stated on the Yelp web site. read more

We had our HVAC replaced by Oasis a few months ago and the experience was great. Oasis is professional and efficient, in less than an hour they had our old unit removed by crane and the new unit up and running. Their pricing is competitive. To update- we did have a manufacture issue with the unit this week however Oasis was able to assess and fix the issue the morning after we called. read more

Oasis gets my "Triple P" rating--prompt, polite and professional. I was looking for a company to give my HVAC unit a good going-over and based my decision to use Oasis on Yelp reviews. I was not disappointed. After making the appointment with a VERY NICE receptionist, got an appointment about a week or so later. Joshua came as expected (got a call from BOTH the receptionist and Joshua to say he was running a few minutes late due to traffic.) Joshua took the time to clean and examine my unit, went on the roof to inspect another component and thoroughly explained the operations of the unit. He even threw in several general tips on hot water heaters, carbon monoxide dangers, etc. No trying to up-sell or pulling out pieces from the unit with a "well, here's your problem!" Honest and informative. Would use again -highly recommend. read more

We got back from vacation to a broken furnace frigid house. We called Oasis, spoke to a very helpful Jennifer, who sent someone over within the hour. Joshua was very knowledgable and friendly. He fixed it within an hour and the price was fair. I'll never go anywhere else for HVAC. -David M. in Lincoln Square read more

I can't say enough wonderful things about Mike, Joshua and OASIS!!! I had a mini-emergency with my heater (it went out on one of the coldest days). Mike and Joshua were able to fit me in their undoubtedly busy schedule, arrived a few minutes early and detected the problem. They fixed it quicker than I could have ever imagined at the fairest price EVER for an emergency call. I will be calling them again as soon as I get my tax return to replace the old heater that was never installed correctly by another firm! I'm so grateful to them and so relieved to have an HVAC contractor that I like and TRUST. Thanks, Mike! Thanks, Joshua! read more