Click to Schedule
Menu
Oasis Plumbing, Heating & Cooling Offers Seasonal Maintenance Plans

Professional AC Repair Services for Chicago Homes and Businesses

When your air conditioning system breaks down during a sweltering Chicago summer, you need immediate relief. At Oasis Plumbing, Heating & Cooling, we understand the urgency of AC repair situations and respond quickly to restore comfort to your home or business. Our experienced technicians arrive equipped with advanced diagnostic tools and a comprehensive inventory of replacement parts to handle most repairs in a single visit. We’ve been serving Chicago and the Northern Suburbs for over 20 years, building our reputation on prompt, reliable service that gets your cooling system running efficiently again.

Chicago’s humid continental climate creates unique challenges for air conditioning systems. The dramatic temperature swings, high humidity levels, and occasional severe weather put significant stress on AC units throughout the cooling season. Our technicians are specifically trained to address the common issues that plague air conditioners in our region, from frozen evaporator coils caused by restricted airflow to compressor failures resulting from electrical surges during thunderstorms. We diagnose problems accurately the first time, saving you money on unnecessary repairs while ensuring your system operates at peak performance.

Common AC Problems We Repair

Air conditioning systems consist of numerous components working together to cool and dehumidify your indoor space. When one component fails, it often affects the entire system’s performance. We frequently repair refrigerant leaks, which not only reduce cooling capacity but also increase energy consumption and utility bills. Our technicians use electronic leak detectors and UV dye testing to pinpoint even the smallest leaks in refrigerant lines, evaporator coils, and condensing units. After repairing the leak, we evacuate the system, test for proper vacuum hold, and recharge with the exact amount of refrigerant specified by the manufacturer.

Electrical issues represent another category of common AC repairs we handle daily. From failed capacitors that prevent motors from starting to worn contactors that cause intermittent operation, electrical problems can manifest in various ways. We systematically test each electrical component using professional-grade multimeters and specialized testing equipment. Faulty thermostats, broken fan motors, and malfunctioning control boards all fall within our repair expertise. Since 1997, we’ve maintained our commitment to quality customer service by thoroughly explaining each repair and providing transparent pricing before beginning any work.

Our Comprehensive Repair Process

Every AC repair service begins with a thorough system evaluation. We inspect both indoor and outdoor components, checking refrigerant pressures, measuring temperature differentials, testing electrical connections, and examining mechanical parts for wear or damage. This comprehensive approach helps us identify not only the immediate problem but also potential issues that could cause future breakdowns. Our technicians document their findings and discuss repair options with you, including cost comparisons between repairs and replacement when appropriate.

Following diagnosis, we perform repairs using industry-best practices and high-quality replacement parts. We maintain relationships with major manufacturers, ensuring access to OEM components that match your system’s specifications exactly. Whether replacing a failed compressor, installing a new blower motor, or rebuilding a condensate pump, we complete each repair with meticulous attention to detail. Our work includes cleaning accessible components, tightening electrical connections, and verifying proper operation before considering the job complete.

Signs Your AC System Needs Professional Repair

Recognizing early warning signs of AC problems can prevent minor issues from escalating into major repairs. Unusual noises often indicate mechanical problems requiring immediate attention. Grinding sounds typically suggest bearing failure in motors, while squealing noises may indicate worn belts or misaligned pulleys. Clicking or buzzing sounds frequently point to electrical issues such as failing relays or contactors. We encourage customers to schedule service promptly when hearing any abnormal sounds from their air conditioning system.

Performance issues provide additional indicators that professional repair is necessary. If your AC runs continuously without adequately cooling your space, struggles to maintain set temperatures, or cycles on and off frequently, these symptoms suggest underlying problems requiring expert diagnosis. Increased humidity levels, uneven cooling between rooms, and sudden spikes in energy bills also warrant professional evaluation. Our technicians excel at identifying root causes rather than simply addressing symptoms, ensuring lasting solutions to your cooling problems.

Emergency AC Repair Services

We recognize that AC failures don’t follow convenient schedules. When your air conditioning stops working during a heat wave or fails unexpectedly during important events, you need responsive emergency service. Our emergency repair team stands ready to address urgent cooling issues throughout Chicago, Bensenville, Addison, and Elmhurst. We prioritize emergency calls, understanding that prolonged exposure to excessive heat poses health risks, particularly for elderly residents, young children, and those with medical conditions.

Our emergency response protocol emphasizes rapid diagnosis and efficient repairs to restore cooling as quickly as possible. Technicians arrive with fully stocked service vehicles containing common replacement parts, refrigerants, and specialized tools needed for most emergency repairs. We maintain extensive parts inventories and strong supplier relationships to source less common components quickly when needed. This preparation allows us to complete many emergency repairs during the initial service call, minimizing disruption to your daily routine.

Preventive Maintenance to Avoid Costly Repairs

  • Annual tune-ups: Professional maintenance identifies potential problems before they cause system failure
  • Filter replacement: Clean filters improve efficiency and prevent strain on system components
  • Coil cleaning: Removing dirt and debris from evaporator and condenser coils maintains optimal heat transfer
  • Refrigerant level checks: Proper refrigerant charge ensures efficient operation and prevents compressor damage
  • Electrical component testing: Regular testing catches failing parts before complete failure occurs
  • Condensate drain cleaning: Clear drains prevent water damage and maintain proper humidity control

Regular maintenance significantly extends equipment life while reducing the frequency and severity of repairs. Our maintenance programs include comprehensive inspections, cleaning, adjustments, and minor repairs to keep your system operating efficiently. We customize maintenance schedules based on equipment age, usage patterns, and manufacturer recommendations. Commercial clients particularly benefit from planned maintenance programs that minimize business disruptions and protect valuable inventory or equipment requiring climate control.

Why Choose Oasis Plumbing, Heating & Cooling for Your AC Repair Needs

Our dedication to customer satisfaction sets us apart in the competitive Chicago HVAC market. We combine technical expertise with transparent communication, ensuring you understand exactly what repairs your system needs and why. Our technicians undergo continuous training to stay current with evolving AC technology and repair techniques. This investment in education enables us to service all major brands and models, from basic residential units to complex commercial systems.

We believe in providing customized solutions that fit your budget without compromising quality. Our repair recommendations consider factors such as equipment age, repair costs versus replacement value, and your long-term comfort needs. We offer flexible financing options for major repairs, helping manage unexpected expenses while maintaining home comfort. Our responsive support staff coordinates scheduling, answers technical questions, and ensures smooth communication throughout the repair process. This comprehensive approach to customer service has earned us loyal customers throughout Chicago and surrounding communities who trust us with all their heating, cooling, and ventilation needs.

AC Repair in Chicago, IL

AC Repair in Chicago, IL

AC Repair ∴ Chicago, IL

Lincoln Square Chamber of Commerce Logo
Lincoln Park Chamber of Commerce Logo
Lakeview Chamber of Commerce Logo
Lakeview East Chamber of Commerce Logo
Edgebrook Sauganash Chamber of Commerce Logo
American Standard Heating & Air Conditioning Logo

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.

View Program

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

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.

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 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.

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 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 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.

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.

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.
Maria Hassan
14 hours ago
Response from the owner:Thank you, Maria, for taking the time to leave a review. We appreciate your support!
Jayant Trewn
19 hours ago
Response from the owner:Thank you, Jayant, for taking the time to leave a review. We appreciate your feedback!
Shana Falk
2 days ago
Oasis installed our furnace and AC and has handled all the maintenance over the 5-6 years we’ve had them. We’ve been happy with them every time. I would definitely recommend them to others.
Response from the owner:Thank you, Shana! We're so glad to hear that you've been happy with our furnace and AC services over the years. Your recommendation means a lot to us!
Melissa Driza
2 days ago
My neighbor used them to install a new HVAC and had a great experience and recommended. I just needed a routine maintenance and live out of state and rent my condo out so was not going to be there and had my tenant just move out. Scheduling was a breeze and the tech showed up when they were supposed to and made a detailed report with photos that they emailed me and he called to give me a rundown as well. Fair pricing too!!
Response from the owner:Thank you, Melissa! We're glad to hear about your positive experience with our scheduling and service. It's great that your neighbor recommended us, and we appreciate your trust in us for your maintenance needs. If you need anything else, feel free to reach out!
Robert Todd
2 days ago
Response from the owner:Thank you, Robert, for taking the time to leave a review. We appreciate your support!
Cambridge House
3 days ago
Oasis (and my tech Dan) are highly profession and FAST. Communication and work is thorough but timely and given the correct amount of urgency. I have an older furnace and after routine maintenance, was shown with visuals a crack in the head exchange with a recommendation within the hour to fix it - not just verbal and the assumption i should trust what is being said - facts. Highly recommend.
Response from the owner:Thank you, Cambridge! We appreciate your kind words about our team's professionalism and the thorough communication provided by Dan. It's great to hear that you found our service timely and effective. Your recommendation means a lot to us!
eric George
4 days ago
Definitely recommend this company. Prices Was affordable. Customer service was great
Response from the owner:Thank you, Eric! We're glad to hear you found our prices affordable and our customer service to your liking. We truly appreciate your recommendation!
Sharon OBrien
5 days ago
This is a highly trusted business. I've worked with them for the past 10 years and they are absolutely, hands down one of the best customer focused businesses I've come across. I had an issue with my A/C recently (during one of those 90+ degree nights) and called to leave a message for the morning.......the owner of the business Mike Causevich answered my call and walked me thru what to do to fix my system without them having to come out. I give them my highest recommendation.
Response from the owner:Thank you, Sharon, for your kind words and continued trust over the past decade; we're glad Mike could assist you during that A/C issue, and we appreciate your highest recommendation!
I have already recommended them. So professional, respectful, responsive
Response from the owner:Thank you, Jennifer! We appreciate your recommendation and are glad to hear you found our team professional, respectful, and responsive. Your support means a lot to us!
Gloria Sagen
5 days ago
Mike arrived early which was awesome. He was professional and explained what he found during his inspection. The furnace looked new when he finished. We discussed the age of the furnace and the price and advantages of a new unit. He also checked my intake filter. I had installed it wrong!
Response from the owner:Thank you, Gloria! We're glad to hear that Mike provided such a professional and thorough inspection. It's great that he helped you with the furnace and intake filter. We appreciate your feedback!
vandelisle
5 days ago
Our forth time using Oasis and I could not be happier. GREAT service and reasonably priced. The technician, Mark, was friendly, very professional and helpful. So happy I found Oasis! HIGHLY RECOMMENDED!
Response from the owner:Thank you, Vandelisle, for your wonderful feedback! We're so glad to hear that you had a great experience with Naem and appreciate your recommendation. Your satisfaction means a lot to us!
Hope Springs
6 days ago
Great work by Michael and Nick to replace my water heater in a tight space. Michael thoroughly explained each step, answered all questions clearly, and seemed genuinely concerned about providing excellent service. They cleaned up the space very nicely, too.
Response from the owner:Thank you, Hope! We're glad to hear that Michael and Nick provided excellent service and took the time to ensure everything was clear for you. Your satisfaction means a lot to us, and we appreciate your kind words!
Great experience with Steve and Amer, Oasis plumbers!! I’ve had several plumbing repair projects in the past few months, and Steve and Amer did a really fantastic job with each project. I highly recommend these guys. In addition to being very knowledgeable and professional, they are very honest and they don’t try to upsell. They do excellent work at a reasonable price and they have a really good understanding of the specific plumbing challenges in older buildings like mine. They also happen to be really nice guys in general. They explain everything clearly and patiently without being condescending in any way. I’m very pleased with their work and the excellent customer service I’ve received from Oasis in general. They are definitely my go-to plumbers and I highly recommend them!
Response from the owner:Thank you, Celeste! We're glad to hear that Chris made such a positive impression. Your recommendation means a lot to us and we look forward to working with you again in the future!
Rachel Krug
6 days ago
Joseph was great! Very thorough and explained everything clearly.
Response from the owner:Thank you, Rachel! We're glad to hear that Joseph provided thorough and clear explanations. Your feedback means a lot to us!
Miriam Pickus
7 days ago
He was right on time and he explained what he found. He even ran back to the office hoping to get a replacement part right then.
Response from the owner:Thank you, Miriam! We appreciate your kind words and are glad to hear that our team member was prompt and helpful in addressing your needs. Your satisfaction means a lot to us!
Claire OC
1 week ago
Oasis is the best. Me and my family have been using them for decades. Always prompt, always knowledgeable and efficient.
Response from the owner:Thank you, Claire! We truly appreciate your loyalty over the years and are glad to hear that you and your family have had such positive experiences with us. Your kind words inspire us to continue providing prompt and knowledgeable service.
Zafnah Ahmed
1 week ago
Such a good experience!
Response from the owner:Thank you, Zafnah! We're so glad to hear you had such a good experience. Your feedback means a lot to us!
Oasis installed a new A/C in our condo and we had a great experience from start to finish. The owner, Mike, came out to provide a cost estimate and was very knowledgeable. I appreciated that Mike recommended a specific A/C solution for our needs, whereas other companies we engaged presented multiple product options with no explanation of the differences. Fernando, Serge and Joe handled the installation and were total pros— punctual, communicative, efficient and tidy. They encountered a setback with the crane and got it handled fast, calling a 2nd crane out to the building in no time. They also identified a problematic piece of piping from a previous install and fixed it on the spot. I’ll definitely be using Oasis for future HVAC needs.
Response from the owner:Thank you, Crystal, for sharing your wonderful experience with us! We're glad to hear that Mike was able to provide you with the right A/C solution and that Fernando, Serge, and Joe delivered a professional installation. We appreciate your trust and look forward to assisting you with any future HVAC needs!
Luke Frankart
1 week ago
Joseph did an excellent job, arrived right on time and was very efficient, courteous and professional.
Response from the owner:Thank you, Luke! We're glad to hear that Joseph provided excellent service and made a positive impression with his professionalism and efficiency. Your feedback is greatly appreciated!
Lorenz Boehm
1 week ago
Service person was very civil. He stayed in touch with his office to make sure of what the office wanted him to do. Very professional.
Response from the owner:Thank you, Lorenz, for your kind words about our service. We're glad to hear that you found the professionalism and communication helpful. Your feedback is greatly appreciated!
David Augustyn
2 weeks ago
Quy came out and serviced my furnace. Very honest and helpful, did a great job!
Response from the owner:Thank you, David! We're glad to hear that Quy provided honest and helpful service for your furnace. We appreciate your kind words!
Robert Baughman
2 weeks ago
Great service. Timely arrival. Explained the process and any needed adjustments.
Response from the owner:Thank you, Robert! We're glad you appreciated the great service and timely arrival. Your feedback about the process explanation means a lot to us.
Andrew Simmons
2 weeks ago
Amer and Steven were great! Super personable and efficient, they fixed an issue with the initial quote fast and then got to work. Knocked out the job in no time and made my day exponentially less stressful. Really appreciated their professionalism and expertise. 10/10, would hire again. Im also about to pull the trigger on a quote from Oasis concerning HVAC work almost entirely based off this experience. Thanks guys!
Response from the owner:Thank you, Andrew! We're glad to hear that Amer and Steven provided excellent service and made your day less stressful. Your feedback means a lot to us, and we appreciate your trust in us for your future HVAC work.
Kathie Shaw
2 weeks ago
Danny was very nice and did a great job installing our new thermostat in less than 15 minutes. The cost with Oasis was very fair. We will definitely be using them again.
Response from the owner:Thank you, Kathie! We're glad to hear that Danny provided excellent service with the thermostat installation and that you found our pricing fair. We look forward to assisting you again in the future!
Sharon Morgan
2 weeks ago
We were sent the A-team! Serge, Nick, and Michael were prompt, professional, flexible, and completed the project ahead of schedule. OASIS represents what customer satisfaction is all about.
Response from the owner:Thank you, Sharon! We're glad to hear that Serge, Nick, and Michael provided such excellent service and exceeded your expectations. Your satisfaction means a lot to us!
Leave a Review Chicago Leave a Review Elmhurst
Same Day Plumbing Repair

Get Back To Comfort Faster With Professional Installation.

Same-day and next-day installation subject to equipment availability and scheduling. Not all systems or installations qualify. Additional charges may apply. Residential customers only.

Use By
10/31/2026
$99 Drain Clearing

Restore Proper Flow With Expert Drain Service.

Drain clearing offer valid for one residential drain. Additional charges may apply for main line stoppages, difficult access, multiple drains, or additional services. Repairs not included. Cannot be combined with other offers.

Use By
10/31/2026
Special Offers

View plumbing maintenance

Maintenance Plans

View HVAC maintenance plans

Chicago, IL