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

Air Conditioning Installation in Winnetka, IL

When summer temperatures climb across Chicago’s North Shore, having a dependable and efficiently operating air conditioning system is not a luxury but a necessity. At Oasis Plumbing, Heating & Cooling, we have been delivering quality customer service, reliability, and expertise in heating, cooling, and ventilation to residential and commercial clients since 1997. Our air conditioning installation services in Winnetka, IL, are designed to provide homeowners with lasting comfort through precision engineering, careful system selection, and expert craftsmanship that stands the test of time.

Winnetka’s housing stock presents unique considerations for air conditioning installation. From historic homes built in the early twentieth century to newer construction along the lakefront, each property demands a tailored approach. We understand that no two homes are alike, and our highly trained technicians work closely with homeowners to evaluate the specific cooling requirements of every space. Serving our customers in Chicago and the Northern Suburbs for over 20 years, we bring a depth of regional knowledge that ensures your installation accounts for the local climate, your home’s architecture, and your family’s comfort preferences.

Our Air Conditioning Installation Process

A successful air conditioning installation begins long before any equipment arrives at your home. Our process starts with a comprehensive in-home assessment where a technician evaluates the square footage of your living space, the quality of existing ductwork, insulation levels, window placement, and the number of occupants in the household. We perform a Manual J load calculation, which is the industry-standard method for determining the precise cooling capacity your home requires. This calculation considers dozens of variables, including ceiling height, sun exposure, and even the types of appliances that generate heat within your home.

After establishing the correct system size, we walk you through equipment options that fit your budget and performance expectations. Modern air conditioning systems come with a wide range of efficiency ratings, measured by the Seasonal Energy Efficiency Ratio, commonly known as SEER2 under current Department of Energy standards. The minimum SEER2 rating for new systems installed in the northern United States is now 13.4, but many homeowners in Winnetka opt for higher-efficiency units rated at 16 SEER2 or above. These higher-rated systems deliver significant energy savings over their lifespan, which typically ranges from fifteen to twenty years with proper maintenance.

Once a system is selected, our installation team schedules the work at a time that minimizes disruption to your household. Installation day involves removing the old equipment, preparing the installation site, setting the new outdoor condensing unit on a level pad, connecting refrigerant lines, wiring the thermostat, and integrating the new system with your existing ductwork. Every connection point is inspected, and we conduct a full system test to verify airflow, refrigerant charge, and thermostat responsiveness before we consider the job complete.

Choosing the Right System for Your Winnetka Home

The air conditioning market has evolved dramatically over the past decade. Homeowners today have access to technology that was unimaginable just a generation ago. Variable-speed compressors, smart thermostat integration, and multi-stage cooling systems allow for precise temperature control and dramatically reduced energy consumption. According to the U.S. Energy Information Administration, air conditioning accounts for approximately twelve percent of total home energy expenditures nationwide, making system efficiency a critical financial consideration.

We offer installation of several system types, each suited to different applications and home configurations:

  • Central air conditioning systems remain the most popular choice for homes with existing ductwork, providing whole-home cooling through a single outdoor unit and an indoor evaporator coil
  • Ductless mini-split systems are ideal for older Winnetka homes that lack ductwork, room additions, or spaces where traditional ducted systems are impractical
  • Heat pump systems offer both cooling and heating capabilities, using refrigerant to transfer heat rather than generate it, which can lead to substantial year-round energy savings
  • Hybrid dual-fuel systems combine a heat pump with a gas furnace, automatically switching between fuel sources based on outdoor temperature for optimal efficiency

Our responsive support staff helps guide you through the selection process, ensuring you understand the benefits and trade-offs of each option. We provide customized solutions to fit your budget without compromising on quality or performance. Whether you are replacing an aging system that has reached the end of its service life or installing air conditioning in a home for the first time, we tailor every recommendation to your specific situation.

Why Proper Installation Matters

Industry research consistently demonstrates that improper installation is one of the leading causes of premature system failure and reduced efficiency. According to studies conducted by the Air Conditioning Contractors of America, as many as seventy percent of residential HVAC systems are not installed to manufacturer specifications. Incorrect refrigerant charges, poorly sealed ductwork, and improperly sized equipment can reduce a system’s efficiency by up to thirty percent, costing homeowners hundreds of dollars annually in wasted energy.

At Oasis Plumbing, Heating & Cooling, we take installation quality seriously. Every technician on our team follows manufacturer guidelines precisely, and we verify every critical parameter before commissioning a new system. Proper refrigerant charge is confirmed using superheat and subcooling measurements, airflow is tested across the evaporator coil, and all electrical connections are verified for safety and code compliance. This meticulous approach ensures your system operates at its rated efficiency from the very first day.

Proper installation also protects your manufacturer warranty. Most major equipment manufacturers require professional installation by a qualified contractor to maintain warranty coverage. Cutting corners during installation or relying on unqualified labor can void these protections, leaving you financially responsible for repairs that would otherwise be covered.

Preparing for Your Installation

Before your scheduled installation date, there are several steps you can take to help the process go smoothly. Clearing the area around your existing outdoor unit and ensuring technicians have unobstructed access to your mechanical room or furnace area saves time and allows the team to work efficiently. If your home requires any electrical panel upgrades to support a new higher-capacity system, we coordinate that work in advance so there are no delays on installation day.

We also recommend discussing any concerns about noise levels, thermostat placement, or aesthetic preferences during the initial consultation. Modern outdoor condensing units operate at sound levels as low as fifty-six decibels, which is quieter than a normal conversation, but unit placement relative to bedrooms, patios, and neighboring properties is still an important consideration in Winnetka’s close-knit residential neighborhoods.

Beyond Installation Day

Our commitment to your comfort does not end when the installation is complete. As your reliable HVAC team, we offer ongoing AC service and AC repair to keep your system running at peak performance throughout its lifespan. Regular maintenance, including annual tune-ups, filter changes, and coil cleaning, extends equipment life and maintains efficiency. We encourage every customer to establish a maintenance schedule immediately following installation so that small issues are caught before they become costly repairs.

The transition to a new air conditioning system represents a significant investment in your home’s comfort, value, and energy efficiency. With the right equipment, expert installation, and ongoing professional care, your new system will deliver reliable cooling for many years to come. If you are considering air conditioning installation in Winnetka, IL, we invite you to reach out and schedule a consultation so we can begin designing the perfect cooling solution for your home.

Air Conditioning Installation in Winnetka, IL

Air Conditioning Installation in Winnetka, IL

Air Conditioning Installation ∴ Winnetka, 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

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 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 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 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.

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.

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.
Stephanie Gretsch
13 hours ago
Andrew Hayworth
2 days ago
Katrina Ta
2 days ago
Mike responded quickly and luckily was nearby so came over pretty fast as well. He was off the clock but still came because I wouldn’t have heat on that cold winter night if my furnace didn’t get fixed. He also explained what went wrong and gave me some tips in case a similar situation occurs in the future. Was reasonably priced as he didn’t charge for the new fuse, overtime, etc. Will definitely use Oasis again for future HVAC needs! Oct 2026: Update - Oasis continues to be my HVAC company, they also do biannual HVAC maintenance for our mid-rise building, and is the company who provides services to all our residents. Naem is usually the person who comes for services and he’s very knowledgeable, helpful, and professional. Everyone who has been here were nothing short of polite and respectful. I will be using Oasis’ services indefinitely! Thank you to such a wonderful team!
Response from the owner:Thank you, Katrina, for your wonderful review! We're glad Mike was able to assist you quickly and provide valuable insights. Your support means a lot, and we look forward to helping you with your future HVAC needs!
Zainab Osman
3 days ago
Great and clean installation
Response from the owner:Thank you, Zainab, for your kind words about the installation! We're glad to hear you found it great and clean. Your feedback means a lot to us!
Ted Devlin
3 days ago
They have replaced both my original AC and furnace over the years and kept them in tip top shape. Workers are always on time for maintenance and the few issues I had with pressure switches in my Rheem furnace. Highly recommend.
Response from the owner:Thank you, Ted! We appreciate your trust in us for your AC and furnace needs and are glad to hear about your positive experiences with our team. Your recommendation means a lot to us!
Colleen Olsen
3 days ago
Very professional and efficient
Response from the owner:Thank you, Colleen! We appreciate your kind words about our professionalism and efficiency.
MJM Moore
4 days ago
Joseph was great. On time. Super nice. Serviced everything as asked!
Response from the owner:Thank you, Mjm! We're glad to hear that Joseph provided great service and met your expectations. We appreciate your feedback!
Jonathan
4 days ago
Fernando’s installation was very thorough and efficient. I had two hvacs replaced with new furnace and air conditioning. He went above and beyond to make sure all my zoned hvac system were calling properly since there were some issues with the dampers and control panel. Joseph came out a week later to top off the coolant since the AC wasn’t strong enough. Very professional and thorough. They are a top-notch team and would gladly use them again.
Response from the owner:Thank you, Jonathan, for your wonderful review! We're glad to hear that Fernando provided thorough and efficient installation and that Joseph followed up to ensure everything was working perfectly. We appreciate your support and look forward to serving you again!
Ben Salley
5 days ago
Very knowledgeable, nice, and super helpful. Got it fixed and explained what was wrong
Response from the owner:Thank you, Ben! We're glad to hear you found our service knowledgeable and helpful. It's great to know we could fix the issue and explain everything clearly.
Andrew Rojecki
5 days ago
Prompt, efficient, and knowledgeable.
Response from the owner:Thank you, Andrew! We appreciate your kind words about our team's promptness, efficiency, and knowledge.
Mary Taylor
5 days ago
Efficient and courteous service.
Response from the owner:Thank you, Mary, for your kind words about our efficient and courteous service. We appreciate your feedback!
Win Villamora
5 days ago
Did not actually fix the problem. Recommended getting a new furnace.
Response from the owner:Thank you for your feedback, Win. I'm sorry to hear that the issue wasn't resolved and appreciate you sharing your experience. If there's anything else we can assist you with, please let us know.
Kevin Murphy
5 days ago
Response from the owner:Thanks Kevin. We’re thrilled that you were satisfied with our services. Your feedback is appreciated, and we hope to be of help again soon!
Rachelle Rasich
5 days ago
Response from the owner:Thank you, Rachelle, for taking the time to leave a review. We appreciate your support!
Brad Herrmann
6 days ago
Very honest. They don't try to upsell you or charge you for things you don't need.
Response from the owner:Thank you, Brad! We appreciate your kind words and are glad to hear you value our honesty and straightforward approach.
Lucy Kaplan
6 days ago
Prompt and pleasant service. Highly recommend. 2026 Update: Just had my 20 tr old AC unit serviced by Joseph from Oasis. He was prompt and polite. He explained everything he was doing. Very happy with this company and strongly recommend them. My update for my fall service call is exactly the same as above except that he was able to come early and I was very happy to accommodate him! Excellent!
Response from the owner:Thank you so much for your business and feedback, Lucy! If any of your friends or family need help, please let them know about us!
Anna Kozlowski
6 days ago
Oasis team is professional and great to do business with. They are on time.
Response from the owner:Thank you, Anna, for your kind words about the Oasis team; we appreciate your support and are glad to hear you had a great experience with us!
A R
6 days ago
I have used Oasis once for HVAC maintenance and twice for plumbing issues. Each appointment has been a pleasant experience. The HVAC technician and plumbers have all been courteous and performed good work, and clearly explained the work done.
Response from the owner:Thank you for sharing your positive experiences with us, A! We're glad to hear that our HVAC technician and plumbers provided courteous service and clear explanations. Your support means a lot to our team!
Kent Brooks
7 days ago
Well mannered, professional, provided clearly.
Dan J
1 week ago
Worked with Joseph for some standard maintenance to our AC and Furnace. Very professional and honest, didn’t push to upsell anything but gave good recommendations.
Katie Reese
1 week ago
Joseph did a great job of looking at the system in my new home. He went through how the it is running and any concerns I have. He took the time to ensure I understood everything. Highly recommend!
Becky Kaplan
1 week ago
Professional and courteous service at a reasonable price.
Response from the owner:Thank you, Becky, for your kind words about our professional and courteous service; we appreciate your feedback!
Gregory Surber
1 week ago
We are very happy with choosing Oasis for our hvac seasonal maintenance and service. Service techs Fernando and Naem are very pleasant and thorough. We highly recommend Oasis.
Response from the owner:Thank you, Gregory, for your kind words and recommendation; we're glad to hear you had a great experience with Naem!
Ben Piper
1 week ago
Quy was extremely thorough and professional.
Response from the owner:Thank you, Ben! We appreciate your kind words about Quy and are glad to hear you had a great experience.
Response from the owner:Thank you, William, for taking the time to leave a review. We appreciate your feedback and are here to help if you have any further thoughts to share!
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
Free Second Opinion

Avoid Unnecessary Repairs And Replacements.

Free second opinion with a written estimate or diagnosis from another service provider. Evaluation only; additional diagnostics, repairs, parts, and services not included. Residential customers only. Cannot be combined with other offers.

Use By
10/31/2026
Special Offers

View plumbing maintenance

Maintenance Plans

View HVAC maintenance plans