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Oasis Plumbing, Heating & Cooling Offers Seasonal Maintenance Plans

Reliable Gas Water Heater Installation for Wilmette Homes

Few moments are as frustrating as turning the tap expecting a warm shower and being greeted by an icy stream. When your old water heater finally gives out, or when you’re building a new home and need a dependable source of hot water from day one, the installation work matters just as much as the equipment itself. A gas water heater that is sized correctly, vented properly, and connected to the gas line by a trained technician will serve your Wilmette household efficiently for years.

At Oasis Plumbing, Heating & Cooling, we approach every gas water heater installation as a custom project rather than a swap-and-go job. Your home’s hot water demand depends on the number of bathrooms, the size of your family, your appliance usage, and even the temperature of the incoming municipal water during Illinois winters. We take all of these factors into account before recommending a unit, so you end up with a system that matches the way you actually live.

Understanding the Installation Process

A successful gas water heater installation follows a carefully sequenced set of steps. Cutting corners on any one of them can lead to inefficient operation, premature failure, or even dangerous conditions like carbon monoxide leaks. Our technicians follow a methodical process designed to protect your home and ensure your new unit performs to its rated capacity.

Here is what you can generally expect when our team handles your installation:

  1. Assessment and sizing: We evaluate your hot water needs and recommend an appropriately sized tank, typically ranging from 40 to 75 gallons for residential use.
  2. Safe removal of the old unit: We drain, disconnect, and haul away your existing water heater while protecting your flooring and walls.
  3. Gas and water line preparation: We inspect and update connections, fittings, and shutoff valves to meet current codes.
  4. Venting and combustion air: We confirm proper flue venting so that combustion byproducts exit your home safely.
  5. Testing and calibration: We check for leaks, set the thermostat, and verify the burner ignites and cycles correctly.

Because gas appliances involve combustion and fuel lines, professional installation isn’t simply a recommendation in this region but a matter of safety and compliance. Our familiarity with local permitting requirements means your project will pass inspection without delays or surprises.

Technical Specifications That Affect Performance

The numbers printed on a water heater’s label tell an important story about how it will perform in your home. First-hour rating, recovery rate, and energy factor all influence whether your household ever runs out of hot water on a busy morning. The first-hour rating measures how many gallons the unit can deliver in its first hour of use, while the recovery rate describes how quickly it reheats once that supply is depleted.

Gas water heaters generally offer faster recovery rates than electric models, making them well suited for larger families and homes with high simultaneous demand. Modern units also feature improved insulation, sealed combustion chambers, and electronic ignition that eliminates the constant fuel draw of an old-fashioned standing pilot light. When we install your system, we walk you through these specifications so you understand exactly what your new heater is capable of and how to get the most from it.

Applications We Handle Throughout the Community

Hot water is a necessity in countless settings, and our installation experience spans a wide range of properties. We’ve configured systems for the practical demands of everyday living and the heavier loads of commercial environments alike.

  • Single-family homes: Reliable hot water for showers, laundry, and kitchen use throughout the year.
  • Multi-bathroom residences: Higher-capacity tanks that keep up with simultaneous demand without temperature drops.
  • Small businesses and offices: Dependable hot water for restrooms, break rooms, and cleaning operations.
  • Rental and investment properties: Durable installations that minimize tenant complaints and service calls.

Whatever the setting, our goal is the same: a clean, code-compliant installation that delivers consistent comfort.

Why Wilmette Residents Trust Oasis Plumbing, Heating & Cooling

Since 1997, we have built our reputation on quality customer service, reliability, and technical expertise. Serving our customers in Chicago and the Northern Suburbs for over 20 years, Oasis Plumbing, Heating & Cooling has installed and serviced countless heating, cooling, and water heating systems across Chicago, IL and the surrounding areas. Our highly trained technicians and responsive support staff offer customized solutions designed to fit your budget without compromising quality.

When you’re ready to schedule your gas water heater installation, our team is prepared to guide you from the first phone call through final testing. We proudly extend our services to neighbors throughout Chicago, Elmhurst, Bensenville, and Addison, IL, and we look forward to bringing dependable hot water back to your home.

Gas Water Heater Installation in Wilmette, IL

Gas Water Heater Installation in Wilmette, IL

Gas Water Heater Installation ∴ Wilmette, 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 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.

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.

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 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.
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
4 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
5 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
5 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
6 days ago
Well mannered, professional, provided clearly.
Dan J
7 days 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!
Dipali Engel
1 week ago
Response from the owner:Thank you for your feedback, Dipali! We appreciate you taking the time to share your thoughts.
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Use By
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Use By
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