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Gas Water Heater Installation in Lombard, IL

When it comes to one of the most important appliances in your home, a properly installed gas water heater makes all the difference. Hot water touches nearly every part of daily life, from morning showers and dishwashing to laundry and sanitation. A correctly sized, properly vented, and safely connected gas water heater can quietly serve a household for a decade or more, while a poor installation can lead to inefficiency, costly repairs, and even serious safety hazards.

At Oasis Plumbing, Heating & Cooling, we have specialized in gas water heater installation for homeowners in Lombard, IL for many years. Our team understands the unique demands of residential plumbing and gas systems in this area, including local building codes, permit requirements, and the typical household needs of families throughout DuPage County. Since 1997, we have built our reputation on quality customer service, reliability, and technical expertise, and that commitment is reflected in every water heater we install.

Why Choose a Gas Water Heater?

Gas water heaters remain one of the most popular choices for homes in Chicago, IL and the surrounding areas for several compelling reasons. Natural gas heats water faster than electric units, which means a higher first-hour delivery rating and shorter recovery times between uses. For families with multiple bathrooms or back-to-back hot water demands, this performance advantage is significant.

Gas units also tend to cost less to operate over time, especially in markets where natural gas remains affordably priced compared to electricity. A standard gas water heater can deliver consistent hot water even during power outages when paired with a standing pilot, providing peace of mind during severe Illinois winters when storms occasionally knock out electrical service.

Modern gas water heaters also offer impressive efficiency ratings, with many models achieving energy factors that significantly reduce monthly utility costs. Power-vented and condensing models extract additional heat from combustion gases before they exit the home, squeezing more performance out of every cubic foot of natural gas consumed.

Our Installation Process

We approach every gas water heater installation in Lombard with a thorough, methodical process designed to ensure long-term performance and safety. Cutting corners on installation can lead to leaks, backdrafting, premature tank failure, and even carbon monoxide hazards, which is why we follow a comprehensive procedure on every job.

Our installation typically includes the following steps:

  • Initial assessment and sizing. We evaluate your household size, peak hot water demand, available space, existing gas line capacity, and venting configuration to recommend the right unit for your needs.
  • Permit acquisition and code compliance. We handle local permitting requirements and ensure the installation meets all applicable plumbing, gas, and mechanical codes.
  • Safe removal of the existing unit. The old tank is drained, disconnected from gas and water supplies, and hauled away for proper disposal or recycling.
  • Professional installation of the new heater. Connections are made with appropriate materials, expansion tanks are installed where required, and venting is verified for proper draft.
  • Testing and homeowner walkthrough. We test for gas leaks, verify proper combustion, check temperature settings, and explain operation and maintenance to you.

Choosing the Right Size and Model

One of the most common mistakes homeowners make is installing a water heater that is either too small or too large for their actual needs. An undersized unit constantly struggles to keep up with demand, leaving family members with cold showers. An oversized unit wastes energy keeping water hot that nobody uses, increasing your utility bills unnecessarily.

For a typical Lombard household, tank sizes generally range from 40 to 75 gallons, with 50-gallon units being among the most popular choices for families of three to five people. However, the right size depends on factors like the number of bathrooms, whether you have large soaking tubs, dishwasher and washing machine usage patterns, and whether you frequently host guests.

We also help homeowners decide between traditional tank-style heaters and tankless gas water heaters. Tankless models heat water on demand, eliminating standby losses and providing virtually unlimited hot water. They cost more upfront and may require gas line and venting upgrades, but they last longer and use less energy over their lifespan. Traditional tank units have lower initial costs and are simpler to install, making them an excellent choice for many households.

Safety Considerations for Gas Water Heaters

Gas appliances demand respect, and water heater installation is not a project that should be tackled by amateurs or unlicensed handymen. Improper gas connections can result in dangerous leaks, while incorrect venting can cause deadly carbon monoxide to accumulate inside your home. We take these risks seriously and never compromise on safety.

Our licensed technicians verify that combustion air is adequate, that vent pipes have proper slope and clearance from combustibles, that the temperature and pressure relief valve is correctly installed, and that the gas supply line is sized appropriately for the unit’s BTU input. We also test for gas leaks at every connection using approved leak detection methods before considering the job complete.

Drain pans, expansion tanks, sediment traps, and seismic strapping where applicable are all part of a code-compliant installation. These components may seem minor, but they protect your home from water damage, plumbing system stress, and other long-term issues that can develop with an inadequately installed water heater.

Serving Lombard and Surrounding Communities

Serving our customers in Chicago and the Northern Suburbs for over 20 years, Oasis Plumbing, Heating & Cooling has built lasting relationships with homeowners throughout the region. We also provide gas water heater installation and a full range of plumbing, heating, and cooling services in Chicago, Elmhurst, Bensenville, and Addison, IL, giving local families a single trusted resource for their home comfort needs.

Our highly trained technicians and responsive support staff offer customized solutions to fit your budget, whether you need an emergency replacement after an unexpected tank failure or want to proactively upgrade an aging unit before it becomes a problem. We carry quality brands, stand behind our workmanship, and treat every home with the respect it deserves.

Schedule Your Installation Today

If your current water heater is more than 10 years old, showing signs of rust at the base, producing rumbling noises, or simply failing to keep up with your family’s needs, it may be time for a replacement. Reach out to our team to discuss your options. We will assess your situation honestly, recommend the right unit for your household, and deliver an installation built to provide reliable hot water for years to come.

Gas Water Heater Installation in Lombard, IL

Gas Water Heater Installation in Lombard, IL

Gas Water Heater Installation ∴ Lombard, IL

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Featured Five-Star
Customer Reviews

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.

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.

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.

Danny and the folks at Oasis got us a great deal on a new furnace and AC. The install took about 4 hours, and they were also super responsive throughout the process. It was about as good of an experience I’ve had with an HVAC company. I’d highly recommend!

Brian C.

Oasis 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.

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.
Ed Rafacz
20 hours ago
Had another company try to fix the problem 3 times. Oasis got it right the first time.
Wayne Lo
1 day ago
The Oasis team is very professional and respectful, and educated me about the work they were performing ( install a new condenser). They did a great job
Autumn Fox
1 day ago
Response from the owner:Thank you, Autumn, for taking the time to leave a review. We appreciate your support!
My air conditioner went out. I called. They responded the next day and fixed it. Thank you very much of cool now.
Response from the owner:Thank you, Jose! We're glad to hear your air conditioner is working perfectly now. Your satisfaction is our priority!
Response from the owner:Thank you, Michelle, for taking the time to leave a review. Your support means a lot to us!
Monica Voth
3 days ago
We'd just moved into our new condo when we realized that none of the three toilets were working properly and a shower was backing up. Oasis was able to get us on the schedule quickly and the technician they sent out was great. Chris was super friendly, efficient, knowledgeable, and best of all, left us with three working toilets and a draining shower. The previous owners had caused a variety of problems to the fixtures and plumbing. Chris diagnosed and resolved each mystery issue. He explained everything clearly and the appointment overall took far less time than I expected.
Response from the owner:Thank you, Monica! We appreciate your kind words and are glad to hear that Chris could resolve the plumbing issues efficiently. If you need anything else, feel free to reach out!
Matt Holofchak
3 days ago
Excellent work with a highly professional team. The team took time to answer all of my questions, as well as provide advice on the long term care of my unit. Would definitely recommend.
Response from the owner:Thank you, Matt! We're glad to hear you had a great experience with our team and that they could provide the support and advice you needed. Your recommendation means a lot to us!
DeAnna Hanosh
3 days ago
Our technician was incredible! He came in on short notice when we had an emergency and responded within hours. He figured out our problem quickly and confidently and gave us multiple different options to solve our problem. We are so grateful for his expertise.
Response from the owner:Thank you, Deanna! We truly appreciate your kind words about our technician's quick response and expertise. It's wonderful to know that he was able to help you effectively during your emergency. Your gratitude means a lot to us!
Bob Haskell
3 days ago
Very satisfied customer here. I really made a mess of my drain, but Oasis’ two service providers were highly competent, very persistent, and friendly to boot. They simply would not quit until the job was done. They are two of the companies’ best assets.
Response from the owner:Thank you, Bob! We're glad to hear you were satisfied with our team's persistence and friendliness. We appreciate your kind words about our service providers and are here to help whenever you need us.
Eric Roldan
3 days ago
Great service and very knowledgeable technician. Very hard to find a trustworthy company
Response from the owner:Thank you, Eric! We appreciate your kind words about our service and technician. It's important to us to be a trustworthy company for our customers.
Alex Insley
5 days ago
Guys did good work on installing my new A/C unit. Clean professional job
Response from the owner:Thank you, Alex! We appreciate your feedback and are glad to hear you’re satisfied with the installation of your new A/C unit.
Oasis is fantastic- they are so responsive and always do a great job. We have used them for almost 20 years at our homes in the city and the suburbs
Response from the owner:Thank you, Regan! We truly appreciate your loyalty over the years and are glad to hear that you find our team responsive and efficient. Your support means a lot to us!
David Allen
5 days ago
My technician (Joseph) provided great service of my furnace/air conditioner. Not only did he service the unit and explain what he was doing, but he also explained why my purchase of this system was superior to conventional AC units. Highly recommend!
Response from the owner:Thanks so much for sharing your experience with Oasis. The Oasis team is thrilled to hear you are satisfied with our services and we look forward to keeping you a happy customer! Sincerely, Your Oasis Team
P Dawson
6 days ago
Oasis is now my go to for HVAC service. They provided an honest assessment of my issues (no attempt to upsell), and did quality work for a good price.
Response from the owner:Thank you, P! We're glad to hear that Oasis is your go-to for HVAC service. We appreciate your recognition of our honest assessments and quality work. Your support means a lot to us!
Ryan Ford
6 days ago
Incredible work by the Oasis team on our water heater and AC unit replacement. We found ourselves with an aggressive leak from an old AC unit and coil. We were without AC in the heat of August while hosting guests with young children. Hani was out immediately to get us an assessment and estimate. We were even able to schedule additional work we had been planning to save time/money. The very next morning Michael, Serge, and Nick were able to replace our rooftop AC unit, completely gut, replace, and rebuild our coil casing, and install a brand new water heater. Incredible work, very thorough explanations of work done, and thoughtful accommodations for young children and sleeping babies. Can’t recommend enough. The kids weekend was saved, thanks Oasis!!
Response from the owner:Ryan, thank you for your fantastic review! We’re glad to hear that Hani, Michael, Serge, and Nick were able to help you with the AC and water heater replacement, especially during such a busy time. Your kind words mean a lot to us, and we're thrilled to have made a positive impact on your weekend.
Jason Yedlinski
6 days ago
Chris the English Plumber saved the day! Our tankless hot water heater got flooded from severe storms while we were out of town and was not working. We coordinated the appointment remotely, Chris disassembled and repaired the unit, and it was back up and running … on a holiday!
Response from the owner:Thank you, Jason! We're glad Chris could assist you and get your hot water heater up and running, especially during a holiday. Your appreciation means a lot to us!
Tinu Bischof
6 days ago
Excellent service
Response from the owner:Thank you, Tinu! We're glad you enjoyed the excellent service. Your feedback means a lot to us!
Aimee Scheppke
6 days ago
On time. Realistic feedback from an efficient and knowledgeable technician. Can't ask for much more!
Response from the owner:Thank you, Aimee! We appreciate your kind words about our technician's efficiency and expertise. Your satisfaction means a lot to us!
Don Skwarlo
6 days ago
Always friendly and knowledgeable. We’ve been using them for 12 years and I completely trust their work. Joseph just stopped by and did an amazing job servicing our A/C units. Very nice, thorough and professional
Response from the owner:Dear Don, thank you for letting us and the community know about your fantastic experience with us! We hope to see you again soon.
Kristin Rogers
7 days ago
Prompt helpful service at a fair price. Friendly and knowledgeable technician.
Response from the owner:Thank you, Kristin! We're glad to hear you had a positive experience with our service and found our technician friendly and knowledgeable. Your feedback is greatly appreciated!
Leonard Hatcher
7 days ago
Oasis responded very quickly and arrived on time early the next day with a same day installation of our air conditioner. You can't ask from r more during the month of August.
Response from the owner:Thank you, Leonard! We're glad to hear that you had a quick and timely installation of your air conditioner. Your satisfaction during the hot month of August means a lot to us!
Oasis heating and cooling, Anel & Vaha were very thorough, efficient, and made sure everything was working correctly. They explained on what they did and provided great information about our new furnace. Updated: Joseph from Oasis came for an AC maintenance. I told him that the unit has been making more noises than normal. He went above and beyond to resolve the issue.
Response from the owner:Thank you for such a nice review and feedback.
Marla Ballenger
1 week ago
I have used Oasis services for about 12 years, and I have always been very happy with the quality of their work and the knowledge and professionalism of their staff. I have met the owner, Mike, who helped when my HVAC systems needed to be replaced, and I can confirm their culture of professionalism starts at the top.
Response from the owner:Thank you, Marla, for your long-term support and kind words. We're glad to hear that you've consistently enjoyed our services and appreciate the professionalism of our team, including Mike. Your feedback means a lot to us!
Michael Blackie
1 week ago
Mark was courteous and professional. He answered my questions with clear explanations.
Response from the owner:Thanks so much for rating your experience with Oasis. The Oasis team is thrilled to hear you are satisfied with our services and we look forward to keeping you a happy customer! Sincerely, Your Oasis Team
M Burnett
1 week ago
We had Oasis come out to take a second look at an older AC system, and the experience was great. They were thorough, straightforward about what they were seeing, and took the time to explain the different options without making it feel like a hard sell. I especially appreciated the conversation around replacement, sizing, and what made sense for an older Chicago home rather than just giving us a number and moving on. Very helpful and professional experience.
Response from the owner:Thank you, Mr. Burnett, for your wonderful feedback! We're glad to hear that you had a great experience with our team and appreciated the thoroughness and professionalism in addressing your AC system. Your satisfaction means a lot to us!
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Lombard, IL