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Oasis Plumbing, Heating & Cooling Offers Seasonal Maintenance Plans

Professional Furnace Services for Chicago Homes and Businesses

When temperatures plummet during Chicago winters, your furnace becomes the heart of your home’s comfort system. At Oasis Plumbing, Heating & Cooling, we understand how critical reliable heating is when arctic winds sweep across Lake Michigan and temperatures drop well below freezing. Our comprehensive furnace services ensure your heating system operates efficiently throughout the harsh winter months, keeping your family warm and your energy bills manageable.

Chicago’s extreme temperature variations place unique demands on residential and commercial heating systems. The city experiences an average of 28 days per year with temperatures below 10°F, making furnace reliability non-negotiable. Our technicians encounter everything from century-old boiler systems in historic Wicker Park brownstones to state-of-the-art high-efficiency furnaces in modern Lincoln Park condominiums. This diverse experience, accumulated over more than 20 years serving Chicago and the Northern Suburbs, enables us to diagnose and repair virtually any furnace issue quickly and effectively.

Comprehensive Furnace Repair and Diagnostics

When your furnace fails on a frigid January morning, you need immediate assistance from experienced professionals. Our diagnostic process begins with a thorough system evaluation, examining critical components including the heat exchanger, blower motor, ignition system, and control board. We utilize advanced diagnostic equipment to identify issues that might not be immediately apparent, such as hairline cracks in heat exchangers or intermittent electrical problems that could lead to complete system failure.

Common furnace problems we encounter in Chicago homes include pilot light failures, thermostat malfunctions, inadequate heat distribution, and unusual noises indicating mechanical wear. Older furnaces often suffer from corroded flame sensors, worn bearings in blower motors, or deteriorating heat exchangers that pose carbon monoxide risks. Our technicians carry extensive parts inventories, allowing us to complete most repairs during the initial service visit. This approach minimizes downtime and ensures your home returns to comfortable temperatures as quickly as possible.

Energy-Efficient Furnace Installation and Replacement

Modern high-efficiency furnaces can achieve Annual Fuel Utilization Efficiency (AFUE) ratings of up to 98%, meaning nearly all fuel consumed converts directly to heat for your home. Compared to older models operating at 60-70% efficiency, upgrading your furnace can reduce heating costs by 30-40% annually. We specialize in installing variable-speed furnaces that adjust output based on heating demands, providing consistent temperatures while minimizing energy consumption.

The installation process requires careful consideration of multiple factors unique to each property. We calculate proper furnace sizing using Manual J load calculations, accounting for square footage, insulation levels, window efficiency, and Chicago’s specific climate data. Undersized units struggle to maintain comfortable temperatures during extreme cold, while oversized systems cycle frequently, creating temperature fluctuations and increased wear. Our installation team ensures proper ductwork connections, gas line configurations, and electrical requirements meet all local building codes and manufacturer specifications.

Preventive Maintenance Programs

Since 1997, Oasis Plumbing, Heating & Cooling has witnessed how regular maintenance dramatically extends furnace lifespan and prevents unexpected breakdowns. Our comprehensive maintenance programs include:

  • Complete system inspection examining all mechanical and electrical components
  • Thorough cleaning of burners, heat exchangers, and blower assemblies to maximize efficiency
  • Safety testing including carbon monoxide detection and gas leak checks
  • Filter replacement and airflow optimization to reduce strain on system components
  • Thermostat calibration ensuring accurate temperature control and programming

Regular maintenance typically reduces heating costs by 10-15% through improved efficiency and prevents approximately 95% of furnace failures. Our technicians document all findings and provide detailed recommendations for any components showing signs of wear, allowing you to plan for replacements before emergency situations arise.

Emergency Furnace Services

Chicago winters don’t wait for convenient times to create heating emergencies. Frozen pipes can burst within hours when furnaces fail, causing thousands of dollars in water damage. We maintain emergency response teams throughout Chicago, Bensenville, Addison, and Elmhurst to address urgent heating failures. Our dispatchers prioritize calls based on severity, with homes containing elderly residents, young children, or individuals with medical conditions receiving immediate attention.

Emergency situations often reveal underlying problems that homeowners might not recognize. Frequent cycling, uneven heating between rooms, or gradual efficiency decreases indicate developing issues. We educate customers about warning signs including yellow pilot flames suggesting incomplete combustion, excessive dust accumulation around vents, or unexplained increases in heating bills. Addressing these symptoms early prevents complete system failures during critical weather events.

Commercial Furnace Solutions

Commercial properties face unique heating challenges requiring specialized expertise. Restaurants need makeup air units coordinated with exhaust systems, while warehouses require strategic heat distribution across vast open spaces. Office buildings demand zone control capabilities accommodating varying occupancy patterns and heat loads from electronic equipment. Our commercial division designs custom solutions addressing these specific requirements while maximizing energy efficiency and minimizing operational disruptions.

We coordinate installations and major repairs during off-hours to avoid business interruptions. Our commercial maintenance agreements include priority service, detailed system documentation, and energy usage analysis helping facility managers optimize heating costs. Many Chicago businesses have reduced heating expenses by 25-35% through our efficiency upgrades and smart control system implementations.

Advanced Furnace Technologies and Future Considerations

The heating industry continues evolving with technologies improving comfort and efficiency. Smart thermostats now learn occupancy patterns and adjust temperatures automatically, while zoning systems deliver precise comfort control to individual rooms. Hybrid heating systems combining high-efficiency furnaces with heat pumps optimize energy usage based on outdoor temperatures and utility rates. We stay current with these advancements, offering customers the latest options for their specific needs and budgets.

Environmental considerations increasingly influence furnace selections. New refrigerants and combustion technologies reduce greenhouse gas emissions while maintaining superior performance. Many utility companies offer rebates for high-efficiency installations, which we help customers navigate to maximize savings. As Chicago moves toward stricter energy codes, we ensure all installations exceed current requirements, protecting your investment against future regulatory changes.

Choosing Oasis Plumbing, Heating & Cooling for your furnace services means partnering with professionals who understand Chicago’s unique climate challenges and have the experience to deliver lasting solutions. Our commitment to quality customer service, reliability, and technical expertise has earned the trust of residential and commercial clients throughout the region. Whether you need emergency repairs, routine maintenance, or complete system replacement, our highly-trained technicians provide customized solutions fitting your specific requirements and budget constraints.

Furnace Services in Chicago, IL

Furnace Services in Chicago, IL

Furnace Services ∴ Chicago, IL

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Family Owned and Operated Since 1997

Make Your Home An Oasis

Keep all your heating and air conditioning systems running at peak performance with an Oasis Plumbing, Heating & Cooling Energy Savings Program. You can avoid seasonal emergencies, extend the life of your equipment and save money on equipment costs and energy over the life of your systems.

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Contact Oasis Plumbing, Heating & Cooling Today!
Featured Five-Star
Customer Reviews

Danny and the folks at Oasis got us a great deal on a new furnace and AC. The install took about 4 hours, and they were also super responsive throughout the process. It was about as good of an experience I’ve had with an HVAC company. I’d highly recommend!

Brian C.

I called Oasis this morning because my furnace was not working. Within 20 minutes their technician, Danny, arrived. Danny was able to assess the situation, provide an immediate fix, and even commit to returning Monday morning to provide additional services needed. Danny was friendly, informative, professional and FAST! I am thankful I called Oasis for my immediate heating needs and that Danny was the technician who arrived. Top notch service! Highly recommend.

Megan R.

The folks with Oasis showed up right on time and replaced my entire furnace and condenser in about 4.5 hours. I had just redone my laundry room where the furnace is and they took great care not to damage anything. Overall very happy with the service and very happy with how respectful the installers were.

Josh D.

Oasis is great! My furnace is almost 30 years old and for a reasonable price they were able to do the repairs. First Danny came to evaluate. He showed me what was wrong. They had to order the necessary parts to fix it. Today Hani and Fernando came to do the repair. They were efficient and courteous. I will definitely use Oasis in the future.

Emily H.

I have been using Oasis since 2019. They are reliable, efficient, and their prices are reasonable. The customer service is amazing. Every tech I’ve had come out is knowledgeable, friendly, and professional. The owner, Mike, is hands on and works with you every step of the way. Highly recommend Oasis.
Services include: furnace and AC replacement; annual maintenance.

Nicole U.

Oasis was incredibly responsive and efficient! My call to them on a Friday night during a cold spell was returned within 10 minutes and he scheduled a tech to come to my home at 7 the following morning. At 7 the tech was there, examined my furnace confirming that a new motor was necessary. He searched for the part, sent a quote and returned with the motor by noon the same day to install it. You can’t beat that!!! I will be using Oasis for all my future furnace and A/C needs.

Gayle V.

Oasis has always been great to work with and their staff are quick and efficient if issues arise. When our air conditioning broke down during the heat of the summer, they provided a quick replacement at a competitive price. Their staff are always extremely kind, respectful, and knowledgeable.

Sam C.

I had a great experience with Oasis. Our furnace had issues on Thursday night and Oasis came at 7am the next morning, and we found out we needed a new one. They provided all the necessary information to our condo building so we could get an emergency replacement on Saturday morning. Within 36 hours we had a brand new furnace and the installation team did a great job communicating on their work and how to use the furnace. The owner, Mike, and his team are great and I really appreciated the attention they gave to this matter. I would highly recommend and will only go to them in the future.

Shane H.
Damir, Mark, Joseph, Vaha & Anel installed our new HVAC system and we’re all so profesional and polite! It was a big job and it got done really quickly and felt like they were barely here. We also had duct cleaning which was very though, and Chris did some plumbing and did a fantastic job.

Really blown away by the whole company including Marc the owner who did our quote for the whole thing. Will use for all my hvac needs going forward
we have been using Oasis for more than 10 years. they replaced our furnace and AC unit through those years. we have never had any problem with heating or cooling since then. Oasis technicians and managers are courteous and knowledgeable. like today, Joseph, spent extra time to show us how our furnace works and the internal safety features that it has. we really appreciate that!
Great experience with Oasis Heating & Cooling. Damir was on time, friendly, and extremely thorough. My furnace needed to be replaced, and he took the time to explain everything clearly while sharing thoughtful maintenance tips, the kind a caring father would give to make sure you’re set up for the long run. He made the whole process easy and stress-free. Highly recommend Damir and Oasis Heating & Cooling.
Oasis was the quickest to be able to get to us when our heat went out at 9 pm on the coldest day of the year. Fernando and Michael were out the next day with a new unit and went above and beyond! When noticing how bad the a/c unit was with corrosion and mold they were able to replace that as well, timely, and all for a fair price! They were on time, professional, quick, and skillful-thank you!
Oasis always delivers! After doing repair work on our AC last year - because the company that did the install wouldn’t return our calls for service - we knew they were the right call for our furnace!

Our furnace motor went out a few days ago - during the winter/a week before Christmas! What a nightmare. Oasis was able to come out first thing the next morning without charging us for an emergency call! Naheem was our repair tech and within 15 minutes he diagnosed the problem and gave us a couple of options with cost estimates. He provided his professional opinion and it felt genuine and unlike a sales pitch!

2 days later, Serge and Harvey came to replace our furnace! They were incredibly kind, respectful and efficient - arriving on time and finishing within the estimated time window. At the end, they did a walkthrough of the new furnace, answered questions about the filters, and even took time to re-affix and correct the settings on our Nest thermostat (that we fully messed up before calling them).

So grateful to find service we can trust!
Update: I continue to use Oasis for ongoing maintenance and repair. This year Joseph came out for the annual check in. He was very professional, went over the system and helped me to better heat my home for the winter. Thank you!

I have been using Oasis since 2019. They are reliable, efficient, and their prices are reasonable. The customer service is amazing. Every tech I’ve had come out is knowledgeable, friendly, and professional. The owner, Mike, is hands on and works with you every step of the way. Highly recommend Oasis.
Services include: furnace and AC replacement; annual maintenance.
Response from the owner:Thank you for the fantastic review Nicole! We loved being of service to you and hope we can assist you again soon.
Joseph did a great job!
Mike came out very late after another company cancelled on me last minute and left me without heat during a brutal cold spell. Mike was able to fix the issue pretty quickly and we soon had heat back. Excellent service, thank you!
Joseph was great! He helped explain to me what was wrong with my furnace and what my options were.
Joseph was quick and efficient!
Well, had Oasis out in November for a new furnace and today for a hot water heater that died (and leaked). They are always responsive and Chris did a great job answering my questions. I didn't realize they have a licensed plumber on staff to do this work. Very helpful!
Great service from Joseph! Diagnosed the issue and was very transparent throughout the whole visit.
Easy and courteous. Joseph was efficient and did a great job explaining my furnace system to me and any issues he identified and how to avoid potential issues. Was very satisfied with Oasis.
This company is incredibly responsive and professional. They installed two new furnaces and AC units in 2021 in our home. This wasn’t the easiest with one of the furnaces in the attic. They did an excellent job and the units have been working really well. Today, they did some maintenance service on the furnaces and again were friendly, super helpful and very knowledgeable. This is a great company to work with!

Just an update, 12/9/25. We had the units serviced today and Joseph was great. He texted before he arrived allowing me time to put the dogs in kitchen. He was right on time, quick and efficient, and he communicated really well. Plus, he answered all my questions. Really like this company!
Response from the owner:Thank you for your wonderful feedback! We're glad to hear about your positive experiences with our team and that the installations and maintenance went smoothly. Your support means a lot to us!
Fernando and Michael did a fantastic job with the removal and install of our new furnace. Had some helpful tips on operation and maintenance of the new system. Would likely recommend. Very professional and courteous. Great work!
This is my third experience having Oasis help with our HVAC and they continue to deliver great results. Michael and Joseph went above and beyond to work on our system. The were super knowledgeable and helpful, and great at communicating and troubleshooting to get our system and keep it in tip-top shape! We also signed up for their annual maintenance program and that will continue to keep our HVAC running smoothly.
I’ve used Oasis for years and they are very timely and professional
Hi bought a high efficiency furnace from Oasis in 2021. Since then I've had one service call that went great. Today I can home from a trip to find a house without heat. It was snowstorm season, and the crew were very busy, but in lieu of a service call, they were able to walk me through a very easy solution which worked great. They've always been very prompt and skilled. *****
Rolled with the punches. They were able to replace my water heater that was practically blocked in by my furnace, and kept me well informed along the way as new obstacles popped up. Much appreciation for they're plumber and the HVAC guy for getting it done and putting out some fires along the way
Simply the best. These guys have been helping me for years. They are not only excellent at what they do, they are totally trustworthy. I would not hesitate to hire them. They do my biannual servicing and help when I have issues which has been fairly often. Can’t recommend them highly enough!
We called Oasis on a Saturday when our furnace went out and they were able to come out within 2 hours. Joseph was great, quickly assessed our problem and explained the repairs. He was thorough and got our heat back up and running
Very quick and about 5000 cheaper than the first estimate. Fernando was good
Joseph came out and provided good info and troubleshooting. Good service
Thank you to Danny! He was friendly, prompt, knowledgeable and professional. He patiently troubleshot my radiant heat issue, fixed it, and followed up to make sure everything was working properly as the system heated up over several hours. Oasis will be my first call for any future plumbing, heating or cooling needs. The office was also great—easy to reach, quick responses, and simple scheduling. Excellent service at a fair price.
Response from the owner:Thank you, Kristin, for your 5-star rating! We appreciate your support.
Top tier service! My son has been experiencing a lot of allergies lately and we decided to reach out to Oasis Heating and Cooling to do an air vent cleaning. Having vents cleaned for a 6 bedroom and 5 bath house is not going to be cheap so we were not shocked that it was costly: it’s not just a quick job, it’s an all day job that requires 4 employees to come out, carry a massive machine in the house, close off all the vents and then do whatever they do to clean the actual vents. The team arrived at 7 am- we were a household that doesn’t wear shoes but they came ready with shoe covers which was really nice because I didn’t prepare any for them. They got straight to work- they were very professional but also very patient and kind to my children who had 1000 questions for them and even challenged them to squats and pushups. The team worked diligently from one room to another and cleaning up after themselves. They took a break for lunch and then came back to finish the job. I was just impressed how they took care of the equipment but were also respectful of our home and made sure to clean up after themselves- triple checking that they put things back and cleaned up. We are very satisfied with their service and work ethic- we highly recommend them.

Two years ago there was a major snow storm on Christmas eve. It was so cold outside (-22 degrees) that the condensation rising from the pipe froze our vent exhaust pipe and caused our attic furnace to shut down. We called Oasis heating and cooling because we have two small children, one that was a baby at the time and the team was at our doorstep the next morning at 6 am to fix it. I could cry right now writing this because our house was freezing and they had a hundred calls coming in that day but because they knew we have small children, came out immediately. You never forget companies like that and their commitment to service, professionalism and kindness. Thank you Oasis Heating and Cooling for everything!
I had an excellent experience with Oasis Heating & Cooling. Their service was fast, professional, and very reliable. A special thank-you to Naem and Mike — they were both extremely helpful and made sure everything was done the right way. They explained everything clearly and took great care of my home.
I’m really happy with their work and definitely recommend Oasis Heating & Cooling to anyone who needs honest and quality service! 💯🔥
The customer service at Oasis is top tier! The office assistant, Chris was pleasant in answering my questions and directing me in the right direction!
Joseph came, explained everything I could've needed to know, showed me pictures of the clog, cleaned it out, couldn't have been easier. This is the furnace they installed 10 years ago, we haven't had any issues in 10 years, and this would have been prevented of we got regular services! Happy to support this local company and they do great work.
Oasis Plumbing, Heating & Cooling truly exceeded my expectations! Michael was exceptionally helpful and displayed remarkable honesty throughout the entire process. He took the time to explain each step clearly and answered all my questions with patience. The quality of work was outstanding, and I genuinely appreciated his dedication to ensuring everything was done right.
I called Oasis because I had no heat and the Office Staff was friendly, helpful, and Professional. Its was clear they really wanted to help! The tech's were very kind, show up on time, actually helpful and very knowledgeable. They weren't just trying to sell me stuff I didn't need. Planning on using them again!
Prices are very reasonable and staff super friendly! Was able to get a same day appointment to get my non-functioning HVAC system looked at. Thank you Fernando and Mikey for coming to my rescue!
Joseph was great! Showed up on time, was very courteous and explained everything he was doing.
Great service, fair pricing and knowledgeable techs
They come in Very politely. Check out issues. Let you know. Give you price to repair. No!! pressure to do more then what is needed. Been using them for 15 yrs. Just great! Had Joseph here today to install a new Thermostat. He was a great!! Helped me set up The registration and mobile foam access computer access he was fantastic
Response from the owner:Thanks Sue. We’re thrilled that you were satisfied with our services. Your feedback is appreciated, and we hope to be of help again soon!
Joseph was on time, efficient and informative. I will use Oasis again as needed.
Response from the owner:Thank you, Thom! We're glad to hear that Joseph provided you with great service, and we look forward to assisting you again in the future.
This is an honest company with superior service. They were at my home within 2 hours from the time I called. My technician, Damir, was fantastic. He diagnosed my furnace issue quickly and knew exactly what he was doing. Extremely polite and knowledgeable. I give Oasis my highest recommendation.
Response from the owner:Thank you, David! We appreciate your kind words about our service and are glad to hear that Damir provided you with excellent support. Your recommendation means a lot to us!
I will never call another service. Everything about Oasis is 5 stars. When I called them just to get information about their services and schedule an appointment, the customer service representative was informative and courteous. I also delightfully surprised that they could schedule a 7 AM appointment so I didn’t have to miss any work. On the day of my appointment, Joseph arrived at 7 exactly! He was also courteous, informative, and efficient. He sealed the deal on me being a lifetime customer of Oasis. I highly recommend everyone give this outfit a lot of consideration when deciding who to call. You won’t regret it.
Response from the owner:Thank you, John, for your fantastic review! We're glad to hear that you had such a positive experience with our team, especially with Joseph. Your recommendation means a lot to us, and we look forward to serving you in the future!
They were super punctual, professional and so informative! They got the job done seamlessly. We had a good day together chatting about delicious food as well! Highly recommend Oasis!
Response from the owner:Thank you, Sana! We're glad to hear you had a great experience and enjoyed the conversation about delicious food. Your recommendation means a lot to us!
Always a pleasure working with the team at Oasis!
Response from the owner:Thank you, Melissa! We're grateful for your kind words and appreciate your continued support of our team at Oasis.
Amazing professional service from Marco. He assessed existing problems and solved them with helpful, thoughtful attention. Thank you!
Response from the owner:Thank you, Megha! We're glad to hear you had an amazing experience with our tech and appreciate his thoughtful attention to your needs.
Joseph was great. Timely and communicative, appreciated the thorough explanation of his assessment of my furnace, transparent with options and gave me honest advice.
Response from the owner:Thank you, James, for your kind words! We're glad to hear that Joseph provided you with timely communication and thorough explanations regarding your furnace assessment. Your feedback is greatly appreciated!
Always friendly service. Joseph was our technician who arrived at the scheduled time and gave us a thorough explanation of the work done. I highly recommend Oasis for your HVAC needs.
Response from the owner:Thank you, Mark! We're glad to hear you had a positive experience with Joseph and appreciate your recommendation for Oasis.
Joseph was very helpful with working to identify potential issues and providing solutions as it relates to an issue I was concerned about
Response from the owner:Thank you, Brandon, for your 5-star review! We truly appreciate your support and look forward to serving you again. We are here for all of your HVAC and Plumbing needs!
I have to say Oasis saved the day and cost eas very reasonable. I would recommend you give them a call if you need thos service
Response from the owner:Thank you, Chris! We're glad to hear that Oasis was able to help you and that you found our pricing reasonable. We appreciate your recommendation!
I always have a good experience with Oasis. The technicians have all been friendly, respectful, helpful and efficient.
Response from the owner:Thank you, Grace, for your wonderful feedback! We're glad to hear you've had great experiences with our friendly and efficient team. We appreciate your support!
The team did a full HVAC replacement and they were phenomenal. The team was respectful, smart and efficient. They handled it all with ease. I highly recommend them.
Response from the owner:Thank you, Carlie! We're grateful for your kind words and happy to hear that our team made a positive impression with their respectful and efficient work. Your recommendation means a lot to us!
Responsive, courteous and reliable service
Response from the owner:Thank you, Michael, for your kind words about our responsive, courteous, and reliable service; we appreciate your feedback!
First time using Oasis Heating. They came out same day on a holiday weekend. Fixed my heater and corrected an issue we had with the Nest. Explained the issue clearly and what they did to fix it.
Response from the owner:Thank you, Denise, for your kind words! We're glad we could help you on a holiday weekend and appreciate your trust in us.
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