If you are tired of running out of hot water, waiting for the tank to reheat, or paying to keep 50 gallons of water hot around the clock whether you need it or not, a tankless water heater is worth serious consideration. OneStop Pro installs tankless and on-demand water heaters throughout Wheaton and the surrounding DuPage County communities, and we can walk you through whether the upgrade makes sense for your home.
What Is a Tankless Water Heater?
A tankless water heater — also called an on-demand water heater — heats water only when you need it rather than storing and constantly reheating a large tank. Cold water flows through the unit, a gas burner or electric element heats it instantly, and hot water arrives at the tap within seconds. There is no storage tank, no standby heat loss, and no running out mid-shower.
Tankless vs. Tank Water Heater — The Real Comparison
Tank water heaters are simpler and cheaper upfront — a standard 40 to 50 gallon unit installed typically runs $800 to $1,800. The tradeoff is that you pay to keep that water hot 24 hours a day, and when the tank empties during a busy morning you wait 20 to 30 minutes for it to recover.
Tankless units cost more upfront — $1,500 to $3,500 installed for a gas unit depending on the brand and whether gas line upgrades are needed. But they last 20 years versus 10 to 12 for a tank, use 24 to 34 percent less energy according to the US Department of Energy, and provide unlimited hot water. For a family of three or more or a home with multiple bathrooms running simultaneously, the math usually favors tankless within 5 to 7 years.
Which Brands Do We Install?
OneStop Pro installs all major tankless brands. The ones we recommend most often for Wheaton area homes are Navien, Rinnai, and Rheem. Navien is particularly popular for its built-in recirculation pump, which reduces the wait time for hot water at distant fixtures. Rinnai has one of the strongest track records for reliability and parts availability. Rheem offers a solid mid-range option with good warranty coverage.
If you already have a brand preference or a unit you have researched, we will install it. We are not tied to any single manufacturer.
What the Installation Involves
A tankless installation is more involved than a standard tank swap. Here is what our process looks like:
We start with a load calculation — confirming that your current gas line can supply enough BTUs for the unit you are installing. A high-output tankless unit requires significantly more gas flow than a tank, and undersized gas lines are the most common installation mistake in the industry. We check this before quoting.
From there we mount the unit, make the gas connection, run the condensate drain for condensing models, and configure the venting. Most tankless units vent through a small PVC pipe rather than a flue, which gives more flexibility in where the unit can be located.
The full installation typically takes 3 to 5 hours. If a gas line upgrade is needed it becomes a two-day project.
Tankless Water Heater Costs in the Wheaton Area
- Gas tankless unit installed (no gas line upgrade needed): $1,500 to $2,500
- Gas tankless unit installed (with gas line upgrade): $2,200 to $3,500
- Electric tankless unit installed: $800 to $1,500 — but electric units require significant amperage and often need a panel upgrade
We provide a firm quote before any work starts. No surprises.
Serving Wheaton and DuPage County
Our plumbing service area covers Wheaton, Naperville, Glen Ellyn, Lombard, Downers Grove, Aurora, and the surrounding DuPage and Kane County communities.
Frequently Asked Questions
Will a tankless water heater work with my existing gas line?
It depends on the BTU requirement of the unit and your current gas line size. We assess this before installation and tell you upfront if an upgrade is needed. Many Wheaton homes have adequate gas supply — many do not. We will not install a unit on an undersized line.
How long does a tankless water heater last?
Properly maintained tankless units last 20 years or more. Tank water heaters typically last 10 to 12 years. The longer lifespan is one of the primary financial arguments for going tankless.
Do you service tankless water heaters you did not install?
Yes. We service all brands including Navien, Rinnai, Rheem, Noritz, and Bosch. Annual descaling is the most common maintenance task — mineral buildup in the heat exchanger reduces efficiency over time in hard water areas like DuPage County.
How soon can you install a tankless water heater in Wheaton?
For most installations we can schedule within 3 to 5 business days. If your current tank has failed and you need hot water urgently, call (630) 216-8783 and we will do our best to prioritize your appointment.
For tankless water heater installation in Wheaton IL, call OneStop Pro at (630) 216-8783 or visit our Water Heater Services page for more information.