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Chicago & Cook County · Since 2016
Tankless Water Heater Installation in Chicago, IL
A tankless water heater gives you unlimited hot water on demand while saving space and cutting standby energy loss. In Chicago, the difference between a great tankless system and a disappointing one comes down to sizing it for our cold winter water, and that is exactly where Browns Heating & Cooling starts.
Tankless installation near you
Endless Hot Water, Sized Right for Chicago Winters
Browns Heating & Cooling installs tankless water heaters across Chicago with EPA-certified technicians, upfront flat-rate pricing and all city permits handled. We have served Chicago since 2016 with a BBB A+ rating and hundreds of five-star customer reviews.
Whether you are upgrading from an aging tank or building new, we size, install and test your system so you get endless hot water that holds up in January, not just July. That includes the parts of the job that make or break a tankless install in an older Chicago home: upsizing the gas line, running new venting and pulling the permit.
Not sure tankless is right for you? We install every type of water heater and will tell you honestly whether a tankless unit or a new tank makes more sense for your home and budget. Ready for hot water that never runs out? Call (708) 536-8134 or book your installation online.
How it works
What Is a Tankless Water Heater?
A tankless water heater, also called an on-demand water heater, heats water only as you use it instead of storing it in a tank. When you open a hot tap, cold water passes through the unit, is heated instantly by a gas burner or electric element, and flows straight to your faucet.
Because there is no tank constantly reheating stored water, you eliminate standby energy loss and never run out of hot water. The compact, wall-mounted design also frees up the floor space a bulky tank would occupy, which is a real advantage in Chicago basements, condos and utility closets.
With no tank sitting full of water, you also avoid the rust and sediment buildup that can affect a tank’s hot water over time. For many Chicago homeowners, the long lifespan and efficiency make tankless a smart long-term investment.
Benefits
Why Chicago Homeowners Go Tankless
Tankless systems solve problems tank owners live with every day. Here is what you gain when the system is sized and installed correctly.
Endless hot water
Run the shower, dishwasher and laundry without anyone getting a cold surprise, even with back-to-back showers.
Space-saving
A wall-mounted unit about the size of a small suitcase frees up basement and closet space.
20+ year lifespan
Nearly double the life of a traditional tank water heater.
Lower energy bills
It heats only when you need it, with no standby loss from reheating a full tank.
Cleaner hot water
No tank to rust or collect sediment over the years.
Expert sizing
Matched to your home’s winter demand, so it keeps up on the coldest days.
Comparing options
Tankless vs. Tank: Which Is Right for You?
The right choice depends on your priorities. A traditional tank costs less upfront and is a simpler swap, which is why most homes still use one. See our 40, 50, 75 and 119 gallon tank options if that is the better fit.
A tankless system costs more to install but rewards you with endless hot water, a smaller footprint, lower operating costs and a much longer lifespan. If you are staying in your home for years and want efficiency and convenience, tankless usually pays off. If you want the lowest upfront cost, a tank may suit you better.
Not sure which fits your home and budget? Explore our full range of water heater services and we will help you weigh both options honestly.
| Tank | Tankless | |
|---|---|---|
| Upfront cost | Lower; a simpler swap | Higher; often needs gas line and venting work |
| Hot water supply | Limited to tank size | Endless, on demand |
| Typical lifespan | 10–15 years | 20+ years |
| Operating cost | Standby loss from reheating | Lower; heats only on demand |
| Space | Floor space for the tank | Compact, wall-mounted |
| Best for | Lowest upfront cost | Long-term owners who want efficiency |
| Gas tankless | Electric tankless | |
|---|---|---|
| Flow rate | Higher; can supply a whole house | Lower; best for smaller demand |
| Upfront cost | Higher | Lower |
| Venting | Required | None needed |
| Common upgrade | Larger gas line | Electrical panel or circuit upgrade |
| Best for | Most Chicago homes on natural gas | Smaller homes, additions, point-of-use |
Fuel type
Gas vs. Electric Tankless Water Heaters
Most Chicago homes run on natural gas, and gas tankless units deliver the higher flow rates needed to supply a whole house, making them the most common choice locally. They require proper venting and often a larger gas line, which we handle as part of the install.
Electric tankless units cost less upfront and need no venting, but they deliver lower flow rates and may require an electrical panel upgrade in older homes. They work well for smaller homes, additions or point-of-use applications. We assess your home’s setup and recommend the right fuel type for your demand.
Winter sizing
How We Size Your Tankless System for Chicago
Proper sizing is the single most important part of a tankless installation, and it is where Chicago’s climate matters most. Tankless capacity is measured in gallons per minute (GPM) at a specific temperature rise, the difference between your incoming water temperature and your target temperature.
In a Chicago winter, incoming groundwater can drop to around 40°F, so reaching a comfortable 120°F means an 80-degree temperature rise. A unit that delivers plenty of hot water in summer can fall short in January if it was not sized for that colder inflow.
We size your system for peak winter demand, not just average conditions, factoring in how many fixtures you run at once. That is how you get a tankless heater that delivers endless hot water year-round, not one that disappoints on the coldest days.
What we check before we size
- How many bathrooms and showers run at the same time
- Dishwasher, laundry and other hot water appliances
- Your winter incoming water temperature
- Gas line size and meter capacity, or electrical panel capacity
- Venting route and wall space for the unit
- Your target hot water temperature
Pricing
Tankless Water Heater Installation Cost in Chicago
Tankless installation in Chicago generally ranges from about $3,000 to $7,000 or more, installed. The biggest cost drivers are not the unit itself, but the gas line upsizing and venting upgrades that most homes need, along with permits and old-unit removal.
It is a larger upfront investment than a tank, but the 20-plus year lifespan and lower energy use offset it over time. Many high-efficiency tankless units also qualify for Chicago HVAC rebates, and we offer flexible financing to spread the cost. Every quote is upfront and flat-rate, so you know the full price before any work begins.
What affects your price
- Gas or electric unit, and its size
- Gas line upsizing to feed the burner
- New venting to code
- Electrical upgrades for electric units
- City permit
- Removal and haul-away of the old tank
How it works
Our Tankless Installation Process
We handle the unit, gas line, venting, permit and haul-away, all backed by our 100% satisfaction guarantee.
Assess & size
We review your hot water demand, gas or electrical capacity and venting route, then size the unit for winter.
Quote & permit
You get flat-rate, upfront pricing. Once you approve, we pull the city permit and schedule the work.
Install
We remove your old tank, upsize the gas line if needed, run venting and mount and connect the new unit.
Test & walk-through
We test hot water at every fixture, show you how the unit works and explain how to keep it descaled.
Brands
Tankless Brands We Install
We install and service the leading tankless brands known for reliable cold-climate performance, including Rinnai, Navien and Rheem. Each has its strengths: some lead on efficiency ratings, others on warranty length and value. See all the brands we service.
Rather than pushing one brand, we recommend the right unit for your home’s demand, your budget and your long-term plans, and explain the real differences in plain English as part of our responsive customer service.
Care
Keeping Your Tankless Unit Running
Chicago’s hard water leaves mineral scale inside a tankless heat exchanger, and scale is the main reason tankless units lose performance or throw error codes. Descaling the unit once a year with a professional flush keeps it efficient and protects that 20-plus year lifespan.
Our water heater maintenance service includes tankless descaling, and if your unit ever does act up, our technicians handle tankless water heater repair too.
Why Browns
Why Choose Browns Heating & Cooling for Tankless Installation
With nearly a decade serving Chicago since 2016, EPA-certified technicians and a BBB A+ rating, we install tankless systems that deliver, backed by our satisfaction guarantee.
Same-day quotes & fast scheduling
Endless hot water, sooner.
Punctual service team dispatch & arrival times
We respect your time.
Competitive pricing, coupons & discounts
Flat-rate, no surprises.
Gas line, venting & permits handled
Done right and to code.
Expert winter sizing
A unit built for Chicago’s cold inflow.
Old unit removal & haul-away included
Start to finish, one job.
Reviews
A Reputation Built on Trust and Quality
Service areas
Tankless Installation Across Chicago & Cook County
We install tankless water heaters in homes, condos, two-flats and businesses throughout Chicago, including Lincoln Park, Lakeview, Logan Square, Hyde Park, Bronzeville, Beverly and Chatham, plus Tinley Park, Orland Park, Oak Lawn, Country Club Hills and other nearby Cook County suburbs. Choose your area for local details, or call and we will confirm coverage for your address.
FAQs
Tankless Water Heater FAQs
How much does tankless water heater installation cost in Chicago?
Tankless installation in Chicago generally ranges from about $3,000 to $7,000 or more, installed. Gas line upsizing, venting, permits and old-unit removal drive most of the cost. We give you flat-rate, upfront pricing before any work begins, and financing is available.
Will a tankless water heater keep up in a Chicago winter?
Yes, if it is sized correctly. Winter inlet water can drop to around 40°F, so the unit has to deliver your peak flow at roughly an 80-degree temperature rise. We size for January demand, not summer, so the system keeps up on the coldest days.
Should I choose a gas or electric tankless water heater?
Gas is the most common choice in Chicago because it supplies the higher flow rates a whole house needs. Electric tankless units cost less upfront and need no venting, but suit smaller homes, additions or point-of-use applications better.
Can you replace my tank water heater with a tankless unit?
Yes. Most of our tankless installs are tank replacements. The switch usually involves upsizing the gas line, adding new venting and mounting the unit on the wall, and we remove and haul away the old tank as part of the job.
How long does a tankless water heater last?
Tankless water heaters typically last 20 years or more, nearly double a traditional tank, especially when they are descaled regularly.
How often should a tankless water heater be descaled?
In Chicago’s hard water, we recommend descaling once a year. Scale buildup on the heat exchanger is the most common cause of reduced performance and error codes. Our water heater maintenance includes professional tankless descaling.
Are there rebates for tankless water heaters?
Some high-efficiency tankless units qualify for utility rebates. See our Chicago HVAC rebates page, and we will help you choose a qualifying model.
Which tankless brands do you install?
We install leading cold-climate brands including Rinnai, Navien and Rheem, and recommend the right model for your home’s demand and budget rather than pushing one brand.
Schedule Tankless Water Heater Installation in Chicago
We handle the unit, gas line, venting, permit and haul-away. Call 708-536-8134 or book online.
Contact
Contact Our Tankless Specialists
Upgrade to endless, efficient hot water with a tankless system sized and installed right for Chicago by Browns Heating & Cooling, all backed by our guarantee. Tell us about your home and we will send a free tankless quote.