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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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Featured Five-Star
Customer Reviews

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.

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.

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.

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.

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.

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.
Called and was able to get a same day appointment. The technician, Fernando, was fantastic. He found the issue quickly and had my furnace fixed faster than I expected. He was courteous, knowledgeable, and explained exactly what the issue was and what he did to fix it. Will definitely be calling them
Again if i need hvac services.
Fernando was fantastic.
I had some repairs and maintenance at my property, Fernando was the technician and was very detail oriented and kind! Was able to get all the work done and is very knowledgeable
Honest, professional, and down to earth. They were able to avert an emergency furnace issue for us.
Per Chris ---

They DON'T service my area......
Chicago Englewood area....ummm!!
Chris and Mike just finished replacing my pressurized toilet system. Chris helped me identify the problem in advance and saved me an extra service call. They showed up on time for our appointment and resolved my issues promptly.
Joseph did a fantastic job, he was timely and explained everything he did for the furnace. Always great service from Oasis. Highly recommend.
We had an incredibly smooth time with Oasis. Their turnaround time for both diagnostics/inspection and installation of our replacement furnace was very fast. 10/10 would recommend their services. All three individuals that came over throughout the entire process deserve high praise for their patience, knowledge, and willingness to answer all of our questions. They also provided helpful tips and things to think about for future servicing.
Mark, was out today at my residence for service. He was very knowledgeable and explained clearly what was needed. Very pleased with the service provided by Oasis.
Response from the owner:Thank you, Ellen! We appreciate your kind words about Mark and are glad to hear you were pleased with the service from Oasis.
Joseph was absolutely wonderful and a pleasure to work with. He is so knowledgeable and very kind. Can’t recommend him enough!
Literally had a guy here in 20 minutes. Tech wasted no time diagnosing the problem – bad limit switch for heat. Was not charged emergency service rate due to a cancellation in the area. Part is ordered and on our way back to comfort!
Joseph, the technician, came over to do a maintenance checkup for our 1-year old furnace and to the replace the damper on our Aprilaire humidifier. Joseph replaced the humidifier damper and showed me how to do it myself. After Joseph inspected my furnace he pointed out a potential problem with the compressor. He said that the compressor was overheating and needed to be watched. I live in a condo and will recommend Oasis to my neighbors
Oasis has provided service for my home for 4.5 years and has always been wonderful. Most recently we had Joseph, who was professional, knowledgeable, and not pushy.
Quick to come out and give me an estimate for several repairs
My experience with Oasis Plumbing, Heating & Cooling was excellent from beginning to end. As soon as I called, Natalia picked up and immediately made things easy she was friendly, responsive, and helped me get an appointment without any hassle. The technician arrived exactly when expected, went over everything in clear detail, and completed the job with care and professionalism. Oasis proved to be a trustworthy and efficient company, and I’d happily call them again for any future needs.
I had an excellent experience with Oasis Plumbing, Heating & Cooling. From the moment I called, Natalia in customer service was friendly, quick to respond, and very clear about pricing and scheduling. The technician arrived on time, explained everything in a way that was easy to understand, and worked efficiently without cutting corners.
Choosing Oasis Heating for my furnace and HVAC replacement was one of the best decisions I’ve made as a homeowner in Chicago. From start to finish, the experience was outstanding—with professionalism and genuine care that truly set them apart.

The installation team was not only incredibly skilled but also took the time to ensure every detail was perfect. Their workmanship was remarkable and impeccable, from the initial removal to the seamless setup of my new system. I never once felt rushed—quite the opposite! They patiently walked me through every step and explained exactly what to expect, which made the whole process surprisingly stress-free.

The best part? Their quote was easily the most competitive and reasonable among all the options I considered. Anel, who headed up my project, went above and beyond to help me—listening carefully to my needs and recommending a solution that was truly better than anything else I found. He made sure I understood the benefits of the new system and didn’t hesitate to address any questions I had.

If you’re in Chicago and need HVAC work, I can’t recommend Oasis Heating highly enough. Their team, especially Anel, is professional, honest, and committed to making sure you get the best possible service and solution. Five stars all around!
Been using Oasis for twice a month routine maintenance on my ac/furnace unit and they always are prompt, friendly and have it running great. Prices are reasonable.
Fantastic service! The technician was very nice and educational and informative. He showed up 10 minutes early to the appointment as well and was efficient with my time. Would absolutely recommend to anyone needing any HVAC services.
Oasis installed our furnace a few years back and recently we've been experiencing some issues with a faulty flame sensor. Oasis listened to our concerns, diagnosed the issue, and implemented a fix professionally and economically. They made things right. We received amazing customer service from Natalia and Mike (the owner?) and the on-site technicians Damir and Amir were very thorough and patient describing the issue and potential causes as well as quickly implementing a fix. Oasis does customer service as well as any organization I've dealt with and I can highly recommend them for anyone looking for heating/cooling expertise. Thanks Oasis!
Fernando to the rescue. Oasis is a neighbor of mine and I had heard they were amazing. My furnace wasn’t working so I sent a request after hours and someone got back to me in minutes. Fernando was there at 7am and fixed everything. They are affordable and friendly. I’m was very appreciative of them coming so quickly as the furnace was for my business. I also signed up for the yearly maintenance and they are coming on Monday to do a cleaning. Thanks again.
Great Prompt service and professional team
Joseph was my technician. He was very thorough and conscientious to make sure everything was properly installed. I was very impressed by his professional manner .
Response from the owner:Thank you, Donald, for your kind words! We're glad to hear that Joseph impressed you with his professionalism and thoroughness. Your feedback means a lot to us!
Fernando and Michael were absolutely incredible. They fixed my furnace in just a few hours, walked me through the new features, and even reminded me to buy new filters to fit. I can't recommend them enough.
Response from the owner:Thank you, Madeline! We're so glad to hear that Fernando and Michael provided you with excellent service and support. Your recommendation means a lot to us!
Technician Joseph did a great job in assessing issues with a 25 year old furnace, A/C, & water heater. He was very detailed and thorough in explaining the different options I had with regard to repairing vs. replacing each of them separately or replacing all of them in one shot, while giving me the pros & cons of the different options. He made sure I understood what he was telling me and not rushing explanations.
Response from the owner:Thank you, Michael, for your kind words about Joseph's thorough assessment and his clear explanations. We're glad to hear you felt well-informed about your options!
Joseph the technician was a great help
On my HVAC service. He was very thorough and explained everything professionally. Thank you!
Response from the owner:Thank you, Parris! We appreciate your kind words about Joseph and are glad to hear he provided thorough and professional service. Your feedback means a lot to us!
Oasis Heating & Cooling is always so fantastic, and their technician Joseph was a delight. We have used them for emergency repairs as well as seasonal maintenance. Prices are always reasonable and technicians are friendly and knowledgeable. Highly recommend!
Response from the owner:Thank you, Gabrielle! We're glad to hear you had a great experience with Joseph and appreciate your kind words about our team and services. Your recommendation means a lot to us!
Chris was excellent, showed up on time, explained everything thoroughly, provided estimates as they progressed, and cleaned up afterwards. Would definitely use again!
Response from the owner:Thank you, Anand! We're glad to hear that Chris provided excellent service and kept you informed throughout the process. Your feedback means a lot to us, and we look forward to assisting you again in the future!
Joseph was great, all the techs have always been helpful and informative. Happy with the service they provide.
Response from the owner:Thank you, Danny! We're glad to hear that Joseph and the team have been helpful and informative. Your satisfaction means a lot to us!
They were quick to come out and diagnosis the issue. They arrived on time and Mike explained what was happening and what was being done. Highly recommend!
Response from the owner:Thank you, Tim! We're glad to hear you had a positive experience with our team and that Mike was able to provide clear explanations. Your recommendation means a lot to us!
Oasis was perfect!!!
They were here quickly
They immediately solved my problem. And made some suggestions regarding repairing or replacing
Response from the owner:Thank you, Mark! We're glad to hear that your tech was able to quickly solve your problem and provide helpful suggestions. We appreciate your feedback!
Great job as always! Thanks - Mary and Kevin Galligan
Response from the owner:Thank you, Kevin! We appreciate your kind words and support, and it's great to hear that you and Mary are satisfied with our service.
Oasis was prompt and helpful. They scheduled my appointment quickly and confirmed in email and text. The rep was friendly and helpful and walked me through options and recommendations, the pricing was reasonable as well.
Response from the owner:Thank you, Mike, for your kind words! We're glad to hear you found our service prompt and helpful, and that our team was able to assist you effectively. Your feedback is greatly appreciated!
Furnace maintenance revealed some issues and I decided new vs repair just made more sense based on age. Prices were in line with national averages for the model and installation fees. Oasis is always friendly, responsive and professional!
Response from the owner:Thank you, Patrice, for your kind words! We're glad to hear you found our pricing fair and our team friendly and professional. Your satisfaction is important to us!
Joseph was great. Very nice and informative.
Response from the owner:Thank you, Jacqueline, for your kind words about Joseph; we're glad you had a positive experience!
Oasis has done preventive maintenance on my heater the last two years, and it’s been a very positive experience. Scheduling is easy, they are responsive, and have actual humans involved in the process! (I’m writing this on the heels of dealing with Xfinity, which was a nightmare). The technicians were right on time both times, nice people, and they do good work. Also, they didn’t try to sell me anything I didn’t need, which builds trust. I will use them again next year and in between if anything else comes up that’s in their wheelhouse.
Response from the owner:Thank you, Patty, for your wonderful feedback! We're glad to hear that your experiences with our team have been positive and that our technicians were timely and trustworthy. We appreciate your trust in us and look forward to assisting you again in the future!
Our technician Chris was prepared and easy to work with, as we had two jobs for him. After an estimate, he worked us into his schedule for the next day. He was on time each day and very efficient in how he completed his work. These were both plumbing repairs.

Due to the good work by Chris, when heating season came we had this firm check our heating season. Naim did the initial work and gave us good advice. But several weeks later a leaky humidifier shut down our system. Joseph came out at no charge to get the system working again. There was no charge even though this company had not installed the unit, nor did they cause the problem. Would definitely recommend them to others.
Response from the owner:Thank you, Rick, for your kind words about Chris and his efficient work on your plumbing repairs; we appreciate your trust in us and are glad we could meet your needs! We are here for all of your HVAC and Plumbing needs!
Joseph was great - quickly checked our furnace!
Response from the owner:Thank you, Abigail! We're glad to hear that Joseph provided quick and efficient service for your furnace. Your feedback is greatly appreciated!
Joseph did a great job, heat is working now!
Response from the owner:Thank you, Marcus! We're glad to hear Joseph was able to help and that your heat is working now.
Mark from Oasis was very quick and efficient at checking our furnace and getting the filter replaced. I would use Oasis again the future and would recommend to others.
Response from the owner:Thank you, Ashley! We're glad to hear that Mark provided efficient service with your furnace. We appreciate your recommendation and look forward to serving you again in the future.
Response from the owner:Thank you, Jarrett, for your 5-star review!
Joseph was great! Professional, on time and fast. Provided photos of the work. Would recommend.
Response from the owner:Thank you, James! We're glad to hear that Joseph made a positive impression with his professionalism and efficiency. Your recommendation means a lot to us!
Joseph was great! We have had great experiences with oasis
Response from the owner:Thank you, Natalie! We're glad to hear you had a great experience with Joseph and the team at Oasis. Your support means a lot to us!
Joseph was great. Fast, professional and helpful in explaining furnace maintenance, upkeep and longevity.
Response from the owner:Thank you, Lawrence, for your kind words about Joseph's service! We're glad to hear he was fast, professional, and helpful in explaining everything you needed. Your feedback is appreciated!
Their technicians are experienced, courteous, and highly skilled at diagnosing and resolving any heating or cooling issue quickly and efficiently. Whether it’s a new installation, seasonal maintenance, or an urgent repair, they always deliver top-quality work and ensure your system runs smoothly. The team explains every step clearly, offers fair pricing, and never pushes unnecessary services. Their punctuality and attention to detail make the entire experience stress-free and trustworthy — exactly what you want when dealing with your home’s comfort systems.

What truly sets Oasis Heating & Cooling apart is their dedication to customer satisfaction and long-term reliability. The staff are friendly, honest, and genuinely care about providing the best solutions for each home or business. They take pride in their workmanship, and it shows in the consistent comfort and energy efficiency their systems deliver. You can tell they value relationships, not just transactions, treating every job as an opportunity to build trust. For dependable service, expert craftsmanship, and peace of mind year-round, Oasis Heating & Cooling is a company you can confidently count on.
Response from the owner:Thank you, Carol, for your wonderful review! We truly appreciate your recognition of our team's dedication and commitment to providing top-quality service. It's great to hear that you value the relationships we build and the care we put into every job. Your continued support through the years means a lot to us!
Very professional, fast and reliable.
Response from the owner:Thank you, Hassan, for your kind words! We appreciate your recognition of our professionalism and efficiency.
I had a great experience scheduling seasonal maintenance on heating/air units in our building. The scheduler was incredibly helpful in negotiating a date/time that worked best. The technician arrived on schedule and performed services in a very timely way. Will definitely connect with Oasis for future service!!
Response from the owner:Thank you, James, for your wonderful feedback! We're glad to hear that our scheduler was helpful and that the technician met your expectations. We look forward to assisting you with future services at Oasis!
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Chicago, IL