Emergency Plumbing Service
Water heater emergency? Call now: (630) 346-1389

Our plumbers are highly-trained, lincensed, bonded, insured experienced pros with an eye for quality and a heart for customer service
We are qualified in top brands like Bradford White, Navien, Delta, Kohler and many others, to give expert service for all of your plumbing systems
As a locally-owned and operated company, we love the DuPage County and Chicago area that we call home. We bring personalized care and friendly service to every job
We provide Same-Day service throughout DuPage County. We're able to provide speedy service your home needs, often within a few hours
A tankless water heater is a sophisticated appliance that requires precise installation by a Our licensed, insured & bonded professional. Our process ensures your system is safe, efficient, and perfectly suited to your home.
At Principle Plumbing, we handle every aspect of installation, from proper sizing to gas line upgrades and venting, ensuring your new system operates at peak efficiency.
Trust Principle Plumbing for professional tankless water heater installation that's done right the first time.
Naperville's hard water can cause mineral (scale) buildup inside a tankless heater over time, reducing its efficiency and lifespan. Regular maintenance is crucial to protect your investment.
Our licensed, insured & bonded have the diagnostic tools and experience to service all major brands, keeping your system running efficiently for years to come.
If your unit displays an error code, isn't producing enough hot water, or is making unusual noises, Our licensed, insured & bonded can help. We quickly identify the issue and perform the necessary repairs to restore your hot water.
We are Our licensed, insured & bonded to install and service all major brands including Navien, Rinnai, Rheem, Noritz, and more. Our technicians stay up-to-date with the latest technology and best practices.
With Principle Plumbing, you're choosing experienced professionals who specialize in tankless water heating systems. Protect your investment with expert care.

How much can I save with a tankless water heater? By only heating water when you need it, you can reduce your water heating costs by up to 40%. This is a substantial saving on your monthly utility bills. Our team at Principle Plumbing provides detailed energy savings calculations during your consultation, showing you exactly how much you'll save over the life of your new tankless system.
What tankless water heater brands do you install? Principle Plumbing is a certified installer of premium tankless water heater brands including Navien, Rinnai, and Noritz. These industry-leading manufacturers offer high-efficiency condensing units with up to 0.97 energy factor ratings, smart recirculation technology for instant hot water, and comprehensive warranty coverage. Our we bring years of experience technicians are factory-trained to ensure your tankless installation meets manufacturer specifications.
How much space does a tankless water heater take up? These compact units are mounted on a wall, freeing up valuable floor space in your utility room or basement that was once occupied by a bulky 40-50 gallon tank. Principle Plumbing installs tankless units in optimal locations to maximize your home's usable space while ensuring easy access for future maintenance.
How long does a tankless water heater last? Tankless water heaters have a lifespan of 20+ years, nearly double that of a traditional tank heater (10-12 years). Principle Plumbing installs premium brands like Navien and Rinnai, and we provide annual descaling maintenance to ensure your tankless system lasts for decades.
Is tankless water cleaner than tank water? Yes! Because water isn't sitting and collecting sediment in a tank, you get a continuous supply of fresh, clean hot water. Principle Plumbing recommends tankless systems for homeowners concerned about water quality, especially in areas with hard water like we bring years of experience.
Can my home support a tankless water heater? Almost any home can! We install both natural gas and propane models, providing the highest flow rates for larger we bring years of experience homes. Principle Plumbing handles all necessary gas line upgrades and venting installation to ensure your new tankless system operates safely and efficiently for years to come.
Unlike traditional water heaters that store and constantly reheat 40-50 gallons of water, tankless systems heat water instantly on-demand. When you turn on a tap, a sensor detects the flow, the burner ignites, and water is heated as it passes through the heat exchanger, delivering instant hot water at your set temperature.
Upgrading to a tankless system means never running out of hot water again. Run the dishwasher, do laundry, and have multiple family members shower back-to-back without interruption while reducing water heating costs by up to 40% through on-demand heating.
Tankless units are compact and wall-mounted, freeing up valuable floor space in your utility room or basement. With a lifespan of 20+ years—nearly double that of traditional tanks—you get cleaner, fresher water without sediment buildup.
A proper tankless installation requires precise sizing based on your home's needs, including number of bathrooms and hot water usage. We perform detailed assessments to determine the correct GPM (gallons per minute) rating for your unit, ensuring optimal performance.

Tankless heaters require a larger gas line (typically 3/4 inch) than traditional tanks. We are fully lincensed, bonded, insured & experienced to perform any necessary gas pipe upgrades safely and to code, ensuring your system operates at peak efficiency.
Proper venting is critical for safety and efficiency. We install the correct type of venting—PVC for high-efficiency condensing units like Navien, stainless steel for others—ensuring your system operates perfectly and meets all safety codes.
we bring years of experience hard water can cause mineral buildup inside tankless heaters over time. Our annual maintenance service includes system descaling (flushing) with special solutions, filter cleaning, and full inspection of burner, venting, and connections for continued peak performance.
We specialize in installing the industry's best brands including Navien—renowned for ultra-high efficiency condensing technology and stainless-steel heat exchangers—and Rinnai, a pioneer in tankless engineering known for exceptional durability and performance.
Make the switch to a more efficient, comfortable, and reliable hot water solution for your home. Our licensed, insured & bonded provide upfront, all-inclusive pricing with in home estimates covering the entire job—the unit, materials, labor, and any necessary upgrades—with no hidden fees.
"Fast, professional service! My kitchen faucet was fixed in no time."
— Sarah M., Naperville, IL
Principle Plumbing Technicians Serve Their Neighbors. Connect with our local teams.
Contact our team of Plumbing experts today for a consultation on your home, residential or commercial property
(630) 346-1389
Addison, Aurora, Bartlett, Bensenville, Bloomingdale, Bolingbrook, Burr Ridge, Carol Stream, Clarendon Hills, Darien, Downers Grove, Elk Grove Village, Elmhurst, Eola, Glen Ellyn, Glendale Heights, Hanover Park, Hinsdale, Itasca, Lisle, Lombard, Naperville, Oak Brook, Oakbrook Terrace, Roselle, Schaumburg, Villa Park, Warrenville, West Chicago, Westmont, Wheaton, Willowbrook, Winfield, Wood Dale, Woodridge Illinois, DuPage County Illinois, Cook County Illinois, Chicago, Illinois and the Greator Chicagoland area
Or call us directly at (630) 346-1389