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

Air Conditioning Replacement in Northlake, IL

When your air conditioning system starts showing signs of age, inefficiency, or frequent breakdowns, replacing it becomes more than a convenience decision — it becomes a financial and comfort necessity. At Oasis Plumbing, Heating & Cooling, we have been serving customers in Chicago and the Northern Suburbs for over 20 years, delivering quality customer service, reliability, and expertise in cooling solutions tailored to the unique needs of Northlake residents. Whether your current unit has reached the end of its lifespan or you are ready to upgrade to a more energy-efficient model, our highly trained technicians are equipped to guide you through every step of the AC replacement process.

Northlake, IL, experiences the full spectrum of Midwestern weather, with hot and humid summers that can push older air conditioning systems beyond their limits. Temperatures regularly climb into the 90s during July and August, and the combination of heat and humidity makes a properly functioning AC system essential for indoor comfort and health. If your current unit was installed more than fifteen years ago, there is a strong chance it is operating well below the efficiency standards of modern systems, costing you significantly more in monthly utility bills while delivering diminished cooling performance.

Recognizing When Replacement Is the Right Choice

Many homeowners in Northlake struggle with the decision between repairing and replacing their air conditioning system. While repairs can extend the life of a unit by a few years, there are clear indicators that replacement is the smarter long-term investment. Since 1997, Oasis Plumbing, Heating & Cooling has helped residential and commercial clients navigate this decision with honest assessments and customized solutions designed to fit your budget. We never push unnecessary replacements, but we also believe in giving you the full picture so you can make an informed choice.

Several key signs indicate that replacement should be seriously considered. If your system requires refrigerant recharges on a regular basis, especially if it uses R-22 refrigerant that has been phased out of production, the cost of maintaining it will only increase. Units that cycle on and off frequently, produce uneven temperatures throughout the home, or generate excessive noise are also strong candidates for replacement. According to the Department of Energy, replacing an older air conditioning system with a modern high-efficiency unit can reduce cooling energy consumption by 20 to 50 percent, which translates to substantial savings over the life of the new equipment.

Our Replacement Process and Methodology

Air conditioning replacement is not a one-size-fits-all service. Every home in Northlake has different square footage, insulation levels, ductwork configurations, and cooling demands. That is why our process begins with a comprehensive in-home assessment. Our technicians evaluate the existing system, inspect the ductwork for leaks or damage, measure airflow, and perform a Manual J load calculation to determine the precise cooling capacity your home requires. This calculation takes into account factors such as window orientation, ceiling height, insulation quality, and the number of occupants.

Once we have a clear understanding of your home’s cooling needs, we present you with equipment options that match your performance expectations and budget. We work with leading manufacturers to offer systems across a range of SEER2 ratings, which is the updated seasonal energy efficiency metric that became the industry standard in 2023. Higher SEER2 ratings mean greater efficiency and lower operating costs. Our responsive support staff walks you through the specifications of each option so you understand exactly what you are investing in before any work begins.

  1. Initial consultation and home assessment to evaluate your current system and identify your cooling priorities
  2. Load calculation and equipment selection to ensure proper sizing and optimal efficiency for your specific home
  3. Professional installation performed by our certified technicians with attention to manufacturer specifications and local building codes
  4. System testing and calibration to verify airflow, refrigerant charge, thermostat accuracy, and overall performance
  5. Post-installation walkthrough where we explain system operation, maintenance recommendations, and warranty details

Understanding Modern AC Technology

The air conditioning industry has undergone significant technological advancement in recent years, and homeowners in Northlake stand to benefit greatly from these innovations. Variable-speed compressor technology, for instance, allows modern systems to adjust their output based on real-time cooling demand rather than simply running at full capacity or shutting off entirely. This results in more consistent temperatures, reduced humidity levels, quieter operation, and dramatically lower energy consumption compared to single-stage systems.

Smart thermostat integration is another feature that enhances the value of a new air conditioning system. Modern units communicate with Wi-Fi-enabled thermostats to optimize scheduling, track energy usage patterns, and even alert you to potential maintenance needs before they become costly problems. Many newer systems also use the R-410A or R-454B refrigerant, both of which have significantly lower environmental impact than the older R-22 that many aging Northlake homes still rely on.

Why Proper Sizing and Installation Matter

One of the most common mistakes in air conditioning replacement is improper sizing. An oversized unit cools the space too quickly without adequately removing humidity, leading to a clammy indoor environment and short cycling that wears out components prematurely. An undersized unit runs constantly without achieving the desired temperature, driving up utility bills and accelerating wear. At Oasis Plumbing, Heating & Cooling, we take precise measurements and calculations seriously because proper sizing directly impacts the longevity, efficiency, and comfort of your new system.

Installation quality is equally critical. Even the most advanced air conditioning system will underperform if it is installed incorrectly. Improper refrigerant charging alone can reduce system efficiency by up to 20 percent. Poorly sealed ductwork connections can result in significant conditioned air loss before it ever reaches your living spaces. Our technicians follow manufacturer guidelines and industry best practices to ensure every connection, seal, and component is installed to the highest standard.

Serving the Northlake Community and Beyond

Northlake sits in a prime location within the greater Chicago metropolitan area, and its residents deserve HVAC service that reflects the same reliability and quality they expect in every other aspect of their lives. As your reliable HVAC team, we also proudly serve communities throughout the Northern Suburbs, including Skokie, Elmhurst, Lombard, Addison, and Wilmette. Our commitment to the region runs deep, and we treat every air conditioning replacement project with the same care and professionalism regardless of the size of the home or the scope of the work.

  • Residential single-family homes requiring complete system upgrades with modern high-efficiency equipment
  • Multi-unit residential properties needing coordinated replacement schedules to minimize tenant disruption
  • Commercial spaces that demand reliable cooling for employee comfort and operational continuity

If your air conditioning system in Northlake is struggling to keep up with summer demands, making strange noises, or simply costing too much to operate, contact Oasis Plumbing, Heating & Cooling to schedule a consultation. We bring decades of experience, technical expertise, and a genuine commitment to finding the right solution for your home. Replacing your air conditioning system is a significant investment, and we are here to make sure it is one that pays dividends in comfort, efficiency, and peace of mind for years to come.

Air Conditioning Replacement in Northlake, IL

Air Conditioning Replacement in Northlake, IL

Air Conditioning Replacement ∴ Northlake, 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 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.

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 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.

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.

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.
Michelle E Moy
2 days ago
Joseph and Kwee showed up on time and were very polite. We promptly went to basement where the PVC pipe for my HVAC drainage had snapped in half. Joseph took a look and told me exactly how he was going to fix/replace the broken pipe. I was in a rush because I was on a client call when they arrived (my fault for not checking my calendar). As I ran upstairs, Joseph asked if I wanted to review pricing, which would have slipped my mind had he not stopped me. I’m very grateful he took the initiative to do that. I was surprised at the price of $225 as other companies had quoted me much higher prices. Once that was agreed upon, Joseph and Kwee got to work and were finished in about 20 minutes. The process was seamless and they were careful about being quiet as they were leaving to not disrupt my call. I will definitely be calling Oasis for my next plumbing job. Before and after pics attached. Thank you, guys!
Bill Nguyen
2 days ago
We have relied on Oasis for years, installing our furnace, maintaining our furnace and a/c, and cleaning our ducts. They are always professional and reliable.
Luis Quinones
5 days ago
Super responsive, great service. Everyone was incredibly nice throughout. Couldn’t ask for much more.
Wayne Duan
5 days ago
I've been using Oasis for my annual HVAC maintenance, as well as various HVAC and water heater repairs for the past ~5 years. They are consistently prompt, polite, and efficient. Every technician has been professional, reliable, and clear in their communication. Highly recommend!"
We had Oasis come out to identify a bathroom tub leak. The two guys were helpful, very friendly, and explained everything that was going on in great detail. They really educated us on what our issue was and identified the potential problems in a matter of minutes. Would def recommend.
Michelle Drake
6 days ago
Timely, professional and informative.
Kaitlin Meyer
6 days ago
Mark G was great. Highly recommend
Spencer Veltema
6 days ago
Oasis Heating and Cooling are definitely the people I recommend for HVAC situations. They’ll be honest with you about what’s going on and what your options are. They may not be the absolute cheapest option but you get what you pay for, and one visit from them compared to multiple visits from someone who is dirt cheap is going to be worth it in the long run.
Matty H
6 days ago
Joseph was very knowledgeable and professional. He explained the issue with my A/C and fixed it promptly, even tackling an unrelated request during the same visit.
Kelsey Rayford
1 week ago
Super detail oriented and fair pricing. Will use them every season!
Response from the owner:Thank you, Kelsey! We appreciate your kind words and are glad to hear you value our detail-oriented approach and fair pricing. Looking forward to serving you every season!
Melanie Makhija
1 week ago
Response from the owner:Thank you for your review, Melanie! We appreciate your support and look forward to serving you again.
Billie Morrow
1 week ago
On time, very professional, explained everything and cleaned up nicely when the job was completed
Response from the owner:Thank you, Billie! We appreciate your kind words about our professionalism and attention to detail. It's great to know you had a positive experience.
Courtney Kendal
1 week ago
Response from the owner:Thank you, Courtney, for taking the time to leave a review. We appreciate your support!
Technicians Joseph and Bill were really great! Punctual, friendly, explained everything in a way that was easy to understand. I highly recommend.
Response from the owner:Thank you, Colette! We're glad to hear that Joseph and Bill provided you with great service and made everything easy to understand. Your recommendation means a lot to us!
Rossy Jimenez
2 weeks ago
Response from the owner:Thank you, Rossy, for taking the time to leave a review. Your feedback is appreciated!
Vanessa Banks
2 weeks ago
Joseph did a great job. My AC unit is on its last leg. He explained in detail the problem and gave me an estimate of the approximate cost of a new unit installation.
Response from the owner:Thank you, Vanessa! We're glad to hear that Mark's efforts made a positive impact. Your feedback means a lot to us!
Deanna Charles
2 weeks ago
Response from the owner:Thank you, Deanna, for your review! We appreciate your support and look forward to serving you again.
searah deysach
2 weeks ago
We've used Oasis for years. They come when they say they will, the are friendly and they get the job done, usually very quickly !
Response from the owner:Thank you, Searah! We appreciate your loyalty and are glad to hear that our team consistently meets your expectations with friendly and efficient service.
Frank Bruno
2 weeks ago
Danny was professional and efficient. He identified the issue immediately. We have used Oasis for a very long time. We keep coming back. Always great!
Response from the owner:Thank you, Frank! We're glad to hear about your positive experience with Danny and appreciate your loyalty to Oasis. Looking forward to serving you again!
I have known Mike for over 25+ years. His crew has installed new heating and cooling systems for me, with vents and ductwork installation, hot water heaters and has serviced and maintained same over the years. They are reliable and always available when you need them. Recently, he replaced the heating and cooling system at my parent's house. He came out right away to assess and provide an estimate for the work and 3 days later my parents had their new system to initiate the winter season worry-free. His crew is punctual, very professional and very knowledgeable in their work. I recommend Oasis without reservation.
Response from the owner:Thank you, Leticia! We truly appreciate your kind words and loyalty over the years. It's great to hear that Mike and the team have consistently met your needs and those of your parents. Your recommendation means a lot to us!
Neela Persaud
2 weeks ago
We had a new AC and furnace replaced in our condo. The work was completed on a Monday. On Saturday morning, there was a lot of water coming down into the utility closet. We called in to the office immediately and since it was a holiday weekend, there was no availability until Tuesday morning. Saturday evening, as the dripping continued, it dripped into the pan the unit was sitting in, causing the safety switch to shut down the AC. We texted Naim, the estimator, who reached out to the GM. On Sunday morning, Mike and Alan came out to diagnose the problem. They found out that the new installation was not the problem. The water was coming from the condo unit above us. They went above and beyond by going to the unit and cleaning out the blocked pipe that was the source of the problem. This was done at no charge to us; pretty sure not yo the neighbors upstairs either. I would highly recommend Oasis.
Response from the owner:Thank you, Neela, for your wonderful review! We're glad to hear that Naim, Mike, and Alan were able to assist you promptly and go the extra mile to resolve the issue. Your recommendation means a lot to us!
Sarah Herweg
2 weeks ago
We had Joseph come out to do maintenance on a bad capacitor - he was very communicative, quick and anticipated what it was based on my description on the phone! Really appreciate the excellent service
Response from the owner:Thank you so much, Sarah! We truly appreciate your support and are glad you had a great experience. We're here for all of your HVAC and Plumbing needs!
Tony Werner
2 weeks ago
Joseph was great. Super helpful and totally clear. Would def use again.
Response from the owner:Thank you, Tony! We're glad to hear that Joseph was helpful and clear in assisting you. We look forward to serving you again!
michael parker
2 weeks ago
Easy to schedule and coordinate, service tech arrived on time and performed the necessary work in a timely matter, making only one recommendation for a minor component replacement in 12 months. Friendly and polite. I will use Oasis again next time need service or a system checkout!
Response from the owner:Thank you, Michael! We're glad to hear that scheduling was easy and that our service tech was friendly and efficient. We appreciate your trust in Oasis and look forward to assisting you again in the future!
Leave a Review Chicago Leave a Review Elmhurst
Same Day Service

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
09/30/2026
$77 off any Plumbing Repair

Restore Comfort Fast With Professional HVAC & Plumbing Repairs.

Offer valid on qualifying residential repair services only. Diagnostic fees, maintenance services, replacements, and new installations are not eligible. Cannot be combined with other offers or prior sales.

Use By
09/30/2026
Special Offers

View plumbing maintenance

Maintenance Plans

View HVAC maintenance plans