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Natural Gas Tankless Water Heaters in Chicago, IL

Are you tired of running out of hot water during your morning shower? Or maybe you’re looking for a more energy-efficient solution to your home’s hot water needs? Look no further than natural gas tankless water heaters from Oasis Plumbing, Heating & Cooling. Serving our customers in Chicago, Elmhurst, Bensenville, and Addison, IL for over 20 years, we have the expertise and knowledge to help you find the perfect tankless water heater for your home.

The Benefits of Natural Gas Tankless Water Heaters

Natural gas tankless water heaters offer a range of benefits over traditional tank-style water heaters, including:

  • Endless Hot Water: Tankless water heaters heat water on demand, so you’ll never run out of hot water again.
  • Energy Efficiency: Because tankless water heaters only heat water when you need it, they use less energy than traditional tank-style water heaters.
  • Space Savings: Tankless water heaters are small and compact, making them a great choice for homes with limited space.
  • Longer Lifespan: With proper maintenance, tankless water heaters can last up to 20 years or more, compared to 10-15 years for traditional tank-style water heaters.

Choosing the Right Tankless Water Heater for Your Home

When it comes to choosing a natural gas tankless water heater for your home, there are a few key factors to consider. At Oasis Plumbing, Heating & Cooling, our experienced technicians will work with you to determine the right size and model for your home based on your hot water needs and usage patterns.

One important factor to consider is the flow rate of the tankless water heater. The flow rate determines how much hot water the unit can deliver at one time, and is measured in gallons per minute (GPM). A higher flow rate means that the unit can supply more hot water simultaneously, which is important if you have multiple fixtures or appliances that use hot water at the same time.

Another factor to consider is the temperature rise of the tankless water heater. The temperature rise is the difference between the incoming cold water temperature and the desired hot water temperature. In Chicago, IL and the surrounding areas, where the incoming cold water temperature can be quite low, a higher temperature rise may be necessary to achieve the desired hot water temperature.

Professional Installation and Maintenance

Once you’ve chosen the right natural gas tankless water heater for your home, it’s important to have it professionally installed and maintained. At Oasis Plumbing, Heating & Cooling, our highly-trained technicians have the expertise and knowledge to ensure that your tankless water heater is installed correctly and safely.

We also offer regular maintenance services to keep your tankless water heater running efficiently and reliably. Our maintenance services include:

  • Flushing the Unit: Over time, mineral buildup can accumulate inside the tankless water heater, reducing its efficiency and performance. We recommend flushing the unit annually to remove any buildup and keep it running smoothly.
  • Checking the Burner Assembly: The burner assembly is a critical component of the tankless water heater, and should be inspected and cleaned regularly to ensure proper operation.
  • Testing the Pressure Relief Valve: The pressure relief valve is a safety device that prevents the tankless water heater from building up too much pressure. We recommend testing the valve annually to ensure that it is functioning properly.

Why Choose Oasis Plumbing, Heating & Cooling for Your Tankless Water Heater Needs?

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. Our responsive support staff offer customized solutions to fit your budget, and our experienced technicians have the knowledge and expertise to ensure that your tankless water heater is installed and maintained properly.

If you’re ready to upgrade to a natural gas tankless water heater, contact Oasis Plumbing, Heating & Cooling today to schedule a consultation. We’ll work with you to find the perfect solution for your home’s hot water needs.

AC Repair, Heating Service, Plumber, HVAC Repair & Air Conditioning Service Chicago, IL, Bensenville, IL, Addison, IL & Elmhurst, IL

Air Conditioning Service in Chicago, IL | Heating Service Bensenville, IL | AC Repair Addison, IL

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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.

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.

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.

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.
Good people to work. They arent paid on commission so they wont recommend work unless it's necessary.
All the techs and customer service reps I've worked with have been professional and courteous. Highly recommend
Response from the owner:Thank you, Anthony, for your kind words and recommendation; we're glad to hear that you found our team professional and courteous. We look forward to working with you in the future!
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!
Response from the owner:Thank you Vladimir.
We have been using Oasis for several years now and have had only great experiences. They are efficient and take care of any issues in a professional and friendly manner. I definitely recommend them!
Response from the owner:Thank you, Gabriela, for your kind words and recommendation! We're glad to hear you've had great experiences with us over the years and appreciate your support. We're here for all your HVAC and Plumbing needs!
Chris came by again to fix all of our residential plumbing needs. This time a few odds and ends (spouts, cartridges, blocked sink).

I’ve worked with dozens of plumbers over the years in both residential and commercial real estate.

He is the best there is.

We’ve used him for larger jobs too, water heater, etc.

If you need any plumbing, gas etc work done, please call Chris at Oasis.
Response from the owner:Thank you, David, for your kind words about Chris and for trusting us with your plumbing needs; we appreciate your support and are glad to hear you've had such positive experiences with him!
Oasis was perfect!!!
They were here quickly
They immediately solved my problem. And made some suggestions regarding repairing or replacing
Response from the owner:Thank you, Mark, for your wonderful feedback! We're glad our team was quick to resolve your issue and provided helpful suggestions. Your satisfaction means a lot to us!
This was my first time using Oasis, and I’m delighted I switched. A knowledgable and helpful technician, and excellent service overall
Response from the owner:Thank you, Peter! We're so glad to hear that you had a positive experience with our knowledgeable technician Danny and appreciated our service. Your satisfaction means a lot to us! We're here for all of your HVAC and Plumbing needs!
We were looking at replacing HVAC and Mike and team made it all a breeze.
Mike was very professional and explained all the options available to us and recommended what would suit us the best. Very practical and down to earth, patiently answered all of our questions.We got an estimate the same day and were scheduled as soon as we accepted the quote.
The crew - Vaha,Anel,Jason,Damir,Amir,Fernando,Michel,Hani - were very professional. They took care to cleanup after the installation and ensured the heating and cooling settings met our needs.
Would highly recommend !
Response from the owner:Thank you, Harsha, for your wonderful feedback! We're glad Mike and the entire crew were able to make the HVAC replacement process smooth for you. Your recommendation means a lot to us! Working with you was a pleasure, and we hope to work with you again in the future!
Response from the owner:Thank you, Hannah, for your amazing 5-star rating! We appreciate your support and look forward to serving you again.
Fernando and Michael were a pleasure to work with! Very professional and efficient! Will be continuing business with oasis for sure!
Response from the owner:Thank you, Megan! We're so glad to hear you had a great experience with Fernando and Michael, and we look forward to continuing to work with you at Oasis!
Great service and attention to detail!
Response from the owner:Thank you, Brendon, for your kind words about our service and attention to detail; we truly appreciate your feedback!
Response from the owner:Thank you, Joe, for your 5-star rating; we truly appreciate your support!
The owner bid the job (A/C and furnace replacement). Very good pricing and warranties. Damir, Amir and Harvey performed their work with skill, efficiency and were respectful of the work space and quite pleasant individuals. Highly recommend this company.
Response from the owner:Thank you for your kind words; we're glad to hear that Damir, Amir, and Harvey provided you with skilled and efficient service! Your recommendation truly means a lot to our entire team!
We have a high end furnace and A/C. Needed service from somebody accredited with American Standard. They were easy to work with and schedule. They did a thorough job on regular maintenance and were appropriately priced.
Response from the owner:Thank you, Mark, for your kind words! We're glad to hear you had a positive experience with our team and that everything went smoothly with your maintenance. Your satisfaction is our priority, and we hope to work with you again in the future!
Oasis installed our water heater and was very helpful in explaining what was wrong with the old water heater and how to maintain the new one. They were also very responsive when we encountered an issue and were able to fix the issue. We also appreciate their proactive approach to notifying us of a possible issue with our A/C. I really appreciate their professionalism and responsiveness and fair pricing!
Response from the owner:Thank you, Jodi, for your kind words and for highlighting our team's commitment to professionalism and responsiveness; we’re glad we could assist you with your water heater and A/C and we're here for all your HVAC and plumbing needs!
I recently hired Oasis to replace three AC units and a furnace. I have to say that the entire process went very smoothly. From job quoting to signing the contract, to office communication scheduling the job dates, then to getting the systems installed, Oasis team is very organized and efficient. On the days of the job (took two days since multiple systems were being replaced), the installation crew, Fernando and Michael (there was another gentleman on the second day, sorry, I didn’t get his name) showed up on time, removed the old and installed the new systems seamlessly. They were very friendly, patiently answered all my questions, and cleaned everything after the job was done.

One extra note I want to add is that during the quoting process, I mentioned a small pipe leaking problem with one of the water heaters in the property. The owner Mike agreed to fix this small issue free of charge (thanks, Mike). The office sent a plumbing technician out on a separate day to get it fixed. This gentleman was also very friendly, professional, and got the job done neatly. Overall, Oasis definitely made me feel that they are the kind of company who stands behind their work, who I can trust when there is a HVAC or plumbing need.
Response from the owner:Thank you, Dewey, for taking the time to leave such a wonderful review and for recognizing our team's efforts, from your techs to our office staff! We truly appreciate your trust in us for your HVAC and plumbing needs. Please don't hesitate to reach out for all your needs in the future, no matter how big or small!
Amazing guys amazing work
Response from the owner:Thank you, Ahmet, for your kind words; we truly appreciate your support and are glad you enjoyed our work!
Called about replacing entire hvac system, was able to get a quote immediately over the phone with just pictures of our current system, being spring before and after the busy season the quote was very fair and what I was expecting, in line with the previous replacements I’ve done on other properties. Scheduled service for when was convenient for us and worked for them. In at 8am and complete by 2pm.
New unit tested out much more efficient than the much older previous system and no surprises in cost or services not quoted.
Damir, Harvee and Amir were all very friendly, professional, respectful and informational.
Being the person my friends all come to for home improvement and contractor advice (real estate side gig for 25+ years) I will whole heartedly recommend this team and Oasis.
Response from the owner:Thank you, K C, for your wonderful feedback! We're glad to hear that you found our quoting process efficient and that Damir, Harvee, and Amir provided you with excellent service. We truly appreciate your recommendation and look forward to assisting you again in the future for all of your HVAC and Plumbing needs!
Always outstanding and reliable.
Response from the owner:Thank you, Rana, for your kind words; we truly appreciate your support. Thank you for choosing us again and again!
Damir and Amir came in to replace our old furnace. They arrived on time, they were professional and super friendly. The father and son duo managed to replace our furnace in 6 hours which was shorter than I expected. Amazing guys, amazing service, I highly recommend Oasis heating to anyone looking for quality heating services. Thank you!
Response from the owner:Thank you, Bart, for your kind words and for recognizing Damir and Amir's hard work; we're glad to hear you had a great experience with us! Your recommendation really does mean a lot to us!
Oasis is a good (i believe) family owned business. The employees are polite and well trained. I received an excellent price for my AC unit. And the installation was seamless. I would recommend them to those who are interested
Response from the owner:Thank you, H, for your kind words and recommendation! We're glad to hear you had a positive experience with our team and that you're satisfied with your AC unit. We are here for all of your HVAC and Plumbing needs!
Techs arrived on time, explained their process at every step, completed their work quickly and were very clean working in our home.
Response from the owner:Thank you, Tom, for your kind words; we're glad our team could provide timely and clean service while keeping you informed throughout the process. We're here for all of your HVAC and Plumbing needs!
Oasis is an excellent, dependable vendor for many of your homeowner needs.
Response from the owner:Thank you, Robert! We're glad to hear you find Oasis to be an excellent and dependable choice for your homeowner needs. We'll see you soon!
Mario gave us excellent service. He took the time to explain everything so we understood what he was doing and what we were being billed for. We have a monthly contract so we even got a discount.
Response from the owner:Thank you, Lee, for your kind words about the excellent service; we're glad he helped clarify everything for you and that you enjoyed the discount! Thank you for being one of our valued members!
The Oasis technician was professional, courteous, and knowledgeable. I’m very pleased with his service.
Response from the owner:Thank you, Arlene, for your kind words about our technician's professionalism and knowledge; we're glad to hear you were pleased with the service!
Mike and the technicians are always great - we have been using Oasis for 20+ years and this a great service - highly recommend!!
Response from the owner:Thank you, Jason, for your kind words and for being a loyal customer for over 20 years; we're glad to hear that Mike and the team continue to provide you with great service! We truly appreciate your recommendation!
They did an amazing job, cleaned everything nicely! The guys were very friendly. I noticed they even cleaned my fans in my room n bathroom exhaust covering! I wish I noticed while they were there to thank them for the extra work. Def recommend and would hire again.
Response from the owner:Thank you, Rafa! We're grateful for your kind words and glad to hear our team made such a positive impression. I made sure to share your positive feedback with the team! We appreciate your recommendation and look forward to serving you again!
Jason was quick, professional, and addressed our HVAC system thoroughly. Highly recommend Oasis Heating and Cooling. 5 stars!
Response from the owner:Thank you, Jonathan, for your kind words about Jason's service; we appreciate your recommendation and are glad you had a great experience with Oasis!
THE BEST EXPERIENCE in my 68 years with a home repair. Replaced my central AC. I had worked with Oasis 6 yrs ago small project and was impressed so when this major repair came up I got a couple quotes and I cannot BE HAPPIER WITH MY DECISION to hire OASIS. GOOD HONEST PEOPLE. On time, polite, always informed, left my home better than they found it and an extremely reasonable price. THANK YOU to DAMIR, AMIR, AMAR and JASON and the owner MIKE and NATALIA.
Response from the owner:Thank you, Mary, for your wonderful review and for trusting Oasis again, this time with a bigger project! We’re glad to hear that our team provided you with such a positive experience. We appreciate your kind words and support!
Great overall experience with a new AC install. Their prices are very affordable and the service has been great.
Response from the owner:Thank you, Brian, for your wonderful feedback; we’re glad you had a great experience with your new AC install and appreciate your kind words about our service and prices!
We have been customers of Oasis for many years now, starting with an emergency furnace replacement and since then for all needed service and repairs for heating and air conditioning. Oasis is the best service provider we've used. Always prompt, courteous, very reasonably priced. When we had on ongoing issue they came out several times until it was resolved with no service call charges. I trust Mike and Oasis completely to get the job done well, timely and at a fair cost, and knowing that they truly stand behind their work.
Response from the owner:Thank you, Ken, for your kind words and for being a loyal customer over the years; we're glad to hear that Mike and the team have consistently met your expectations and provided you with reliable service. We truly appreciate your continued trust and recommendation!
Jason arrived first thing in the morning, quickly diagnosed and addressed the problem and got our boiler running again. Thank you! Would highly recommend.
Response from the owner:Thank you, Kate! We're glad Jason was able to help you get your boiler running smoothly again and appreciate your recommendation.
Oasis Heating and Cooling has replaced the HVAC and water heaters in two condo units for me. They were extremely easy to work with. Installation was timely, fast and professional. Everyone I spoke to on the phone made the process smooth and pleasant. I have worked with them twice now and I highly recommend them!
Response from the owner:Thanks, Doug! We're so glad to hear that you found our team easy to work with and that the installation process went smoothly. We appreciate your recommendation and look forward to assisting you again in the future!
Chris was quick to contact me about my water heater and gathered all the details. He also gave me an estimate for a replacement heater and kept me up to date on the work. Everything turned out great and I’m very thankful for Chris’ help. Thank you!
Response from the owner:Thank you for your kind words! We're glad to hear Chris provided you with excellent service and kept you informed throughout the process. Your satisfaction means a lot to us!
We had the pleasure of dealing with Jason, who arrived exactly on time and had our boiler working again within fifteen minutes. He also provided some quality recommendations for the ongoing maintenance of our unit. Oasis will definitely be our first call in the future.
Response from the owner:Thank you, Dan, for your kind words and for recognizing Jason's promptness and expertise; we're glad to hear you'll be reaching out to us again in the future! We're here for all your HVAC (and plumbing!) needs whenever you need us!
Great service. The tech arrived on time, quickly diagnosed any issues, and presented clear options for repair. Honest and fair. Very professional. Thank you Oasis!
Response from the owner:Thank you, Mark, for your kind words about our service and the professionalism of our tech; we're glad you had a positive experience with us! We're here any time for all your HVAC and plumbing needs!
Response from the owner:Thank you, Emily, for the 5-star rating; your support means a lot to us!
They are the most honest company around!! So helpful always and so prompt!
Response from the owner:Thank you, Kate, for your kind words! We're grateful for your support and are glad our team could assist you promptly!
Naem performed routine service on our A/C. He spent time to answer all my questions. I have been recommended Oasis from multiple people and am very pleased with the service!
Response from the owner:Thank you, Cyrus! We're glad to hear that Naem took the time to address your questions and that you’re pleased with our service. We appreciate the recommendations and your support!
Been providing by my hvac maintenance for 10+years. Always been communicative, good pricing, and their guys are the best
Response from the owner:As always, we are more than happy to help, Ken! We love our long time clients, and look forward to maintaining your unit for years to come.
They were on time, clean and super professional. Definitely recommend.
Response from the owner:Thank you, Matthew! We're glad to hear you found our tech to be clean and professional; your recommendation means a lot to us!
The work was done quickly and plumber was nice but quite expensive for a short job so I’ll go back to my previous plumber
Response from the owner:Thank you, Susan, for your feedback! We're glad to hear the work was done quickly and that you found the plumber nice, and we appreciate your honesty about the cost. We hope to still work with you for all your HVAC needs!
Response from the owner:Thank you, Mike, for the fantastic 5-star rating; we truly appreciate your support!
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!
Response from the owner:Thank you, Mike, for your amazing 5-star rating; we truly appreciate your support!
Response from the owner:Thank you, Valerie, for the wonderful 5-star rating; we truly appreciate your support!
Oasis came out and serviced my furnace in an emergency situation and handled the issues with the utmost professionalism. I have worked with many companies and tradesman over the years and Oasis is different, they are prompt, courteous, professional and extremely knowledgeable about what they do. They are honest too and fair in their leaving. This is the best HVAC company in Chicago in my opinion.
Response from the owner:Thank you, Patrick, for your kind words and for trusting Oasis with your emergency furnace service! We truly appreciate your recognition of our team’s professionalism and knowledge. Thank you so much for your support and recommendation!
Great service, resolution and timely!
Response from the owner:Thank you, Rebecca! We appreciate your kind words about our service and are glad we could resolve your issue promptly. We appreciate your trust in us!
Oasis did a stellar job. Always nerve-wracking when a furnace goes out, especially in winter. They gave me a fair price, came out immediately, and performed a great installation. Also very courteous and professional. They've locked in my business as my multi-flat has other aging units. I just hope to space it out significantly. Thanks, Oasis!
Response from the owner:Thank you, Dru, for your wonderful feedback! We're glad to hear you had a positive experience with our team and appreciate your trust in us for your future needs. We're here whenever you're ready for your next project!
Response from the owner:Thank you, José, for your amazing 5-star rating; your support means a lot to us!
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