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Oasis Plumbing, Heating & Cooling Offers Seasonal Maintenance Plans

Professional Furnace Installation Services for Winnetka Homes

When temperatures plummet during harsh Illinois winters, your furnace becomes the heart of your home’s comfort system. At Oasis Plumbing, Heating & Cooling, we understand that installing a new furnace represents a significant investment in your property’s value and your family’s wellbeing. Our comprehensive furnace installation process ensures optimal performance, energy efficiency, and long-term reliability for homeowners throughout Winnetka and the surrounding areas.

The decision to replace an aging furnace or install a new system requires careful consideration of multiple factors including your home’s square footage, insulation quality, existing ductwork condition, and specific heating requirements. We begin every installation project with a thorough evaluation of your property to determine the most appropriate furnace size and configuration. This detailed assessment prevents the common problems associated with improperly sized equipment, such as short cycling, uneven heating, and excessive energy consumption.

Understanding Modern Furnace Technology and Options

Today’s furnace technology has evolved dramatically from the basic heating systems of previous decades. High-efficiency condensing furnaces now achieve Annual Fuel Utilization Efficiency ratings exceeding ninety-five percent, extracting maximum heat from every cubic foot of natural gas consumed. These advanced systems incorporate variable-speed blowers that adjust airflow based on heating demand, providing more consistent temperatures while reducing energy waste. Two-stage and modulating burners further enhance comfort by eliminating the temperature swings associated with single-stage equipment.

Our installation expertise extends across all major furnace types and brands, allowing us to match each Winnetka household with the ideal heating solution. Gas furnaces remain the most popular choice in our region due to natural gas availability and cost-effectiveness. However, we also install electric furnaces for homes without gas service and dual-fuel systems that combine a heat pump with a gas furnace for maximum efficiency across varying outdoor temperatures. Since 1997, Oasis Plumbing, Heating & Cooling & Cooling has delivered quality customer service, reliability, and expertise in heating, cooling, and ventilation to our residential and commercial clients.

The Comprehensive Installation Process

Professional furnace installation involves far more than simply swapping old equipment for new. Our certified technicians follow a meticulous multi-step process that begins with protecting your home’s interior through the use of drop cloths, floor runners, and dust barriers. We carefully remove the existing furnace while evaluating all connected components including the plenum, return air drops, supply runs, and venting systems. Any damaged or inadequate ductwork sections are repaired or replaced to ensure proper airflow distribution throughout your home.

The physical installation of your new furnace requires precise attention to manufacturer specifications and local building codes. We level the equipment platform, secure all electrical connections, properly size and install gas piping, and configure the venting system for safe exhaust removal. Modern furnaces often require modifications to existing infrastructure, such as installing dedicated electrical circuits for variable-speed motors or adding condensate drainage lines for high-efficiency models. Our highly-trained technicians, and responsive support staff, offer customized solutions to fit your budget while ensuring every installation meets or exceeds industry standards.

Essential Components of a Quality Installation

  • Load calculation analysis: We perform detailed heat loss calculations considering your home’s insulation, window efficiency, and air infiltration rates
  • Ductwork evaluation: Our team inspects and tests existing ductwork for leaks, restrictions, and proper sizing to maximize system performance
  • Safety system verification: We thoroughly test all safety controls including limit switches, flame sensors, and carbon monoxide detectors

Proper thermostat selection and placement significantly impact both comfort and efficiency. We install programmable and smart thermostats that allow precise temperature scheduling, remote access capabilities, and integration with whole-home automation systems. The thermostat location must avoid direct sunlight, drafts, and heat sources that could cause false readings and inefficient operation.

Maximizing Energy Efficiency and Performance

Energy efficiency considerations extend beyond the furnace itself to encompass the entire heating system. We seal all ductwork connections with mastic or metal-backed tape to eliminate air leakage that can waste twenty to thirty percent of heated air. Insulating ducts in unconditioned spaces like attics and crawlspaces prevents heat loss during distribution. Adding zoning systems allows different areas of your home to maintain independent temperatures, reducing energy consumption in unused spaces while maintaining comfort where needed.

Serving our customers in Chicago and the Northern Suburbs for over 20 years, we’ve witnessed firsthand how proper installation techniques dramatically impact long-term performance. A correctly sized and installed furnace typically operates more quietly, maintains more consistent temperatures, and requires fewer repairs throughout its service life. We also configure your new system for optimal humidity control, as winter heating can create uncomfortably dry indoor air without proper humidification.

Post-Installation Support and Maintenance

Following installation, we conduct comprehensive system commissioning to verify proper operation across all heating stages and safety functions. This includes measuring gas pressure, checking electrical amp draws, testing temperature rise across the heat exchanger, and adjusting blower speeds for optimal comfort and efficiency. We document all readings and provide detailed operational instructions so you understand your new system’s features and maintenance requirements.

Regular maintenance preserves your installation warranty and extends equipment lifespan significantly. We recommend annual tune-ups that include cleaning burners, inspecting heat exchangers for cracks or corrosion, replacing filters, and lubricating moving parts. Our maintenance programs provide priority service, discounted repairs, and peace of mind knowing your heating system will perform reliably when you need it most.

Making the Right Investment for Your Winnetka Home

Selecting the right furnace and ensuring professional installation protects your investment while providing years of efficient, reliable heating. Variable-speed systems offer superior comfort and humidity control but require higher initial investment. Single-stage furnaces cost less upfront but may result in higher operating expenses and less consistent temperatures. We help you evaluate total ownership costs including purchase price, installation complexity, expected energy savings, and anticipated maintenance requirements.

The timing of your furnace installation also matters. While emergency replacements sometimes prove unavoidable, planning your installation during fall months allows unhurried equipment selection and scheduling flexibility. This proactive approach often results in better pricing and ensures your heating system is fully operational before winter’s coldest days arrive. Our extensive experience throughout Winnetka’s diverse neighborhoods, from older homes near the lakefront to newer construction in western areas, enables us to anticipate and address unique installation challenges specific to your property’s architecture and mechanical systems.

Your new furnace represents one of your home’s most critical mechanical systems, directly impacting comfort, safety, and monthly utility expenses for the next fifteen to twenty years. At Oasis Plumbing, Heating & Cooling, we combine technical expertise with commitment to customer satisfaction, ensuring your furnace installation exceeds expectations while providing dependable comfort throughout countless Chicago winters ahead.

Furnace Installation in Winnetka, IL

Furnace Installation in Winnetka, IL

Furnace Installation ∴ Winnetka, 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.

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.

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 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.

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.

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 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.
Joseph was honest and quick. Thank you!
Joseph, Damir, and Amir did an amazing job. The staff was on time knowledgeable and completed the full furnace replacement in 4.5 hours. They told me all about the unit and explain everything i needed to know. Will definitely use them in the future.
Tech and installation members were friendly, knowledgeable, and efficient. The company is extremely easy to reach / provides fair pricing. Our heat went out on 12/30 and someone was out here the next morning on New Years Eve to check it out. Highly recommend for maintenance and repairs!
Joseph did a great job. Knowledgeable and fast!
Joseph we extremely helpful and gave an in depth explanation of the systems/issues
Team Amir was great! Stayed til everything worked even the day after Xmas. Couldn't recommend them enough.
Damir, Mark, Joseph, Vaha & Anel installed our new HVAC system and we’re all so profesional and polite! It was a big job and it got done really quickly and felt like they were barely here. We also had duct cleaning which was very though, and Chris did some plumbing and did a fantastic job.

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

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

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

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

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

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

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