Tankless Water Heater Services in Northern Virginia

Family-Owned Since 1975

Serving our community with integrity for over four decades.

Licensed & Insured Experts

Our certified plumbers ensure your job is done right.

Upfront, Honest Pricing

No surprises or hidden fees—just transparent, fair pricing.

Endless Hot Water Starts Here

Upgrade Your Home's Hot Water Experience

Are you tired of running out of hot water in the middle of a shower? Do you want to reduce your monthly energy bills and free up valuable space in your utility closet? A tankless water heater might be the perfect solution for your home. Unlike traditional tank-style heaters that constantly heat and store gallons of water, tankless systems heat water instantly, on demand. This provides an endless supply of hot water while significantly improving energy efficiency.

For homeowners in Fairfax, Arlington, McLean, and throughout Northern Virginia, John Nugent & Sons is the trusted expert for all tankless water heater services. Since 1975, our family-owned business has provided top-tier plumbing solutions, and our licensed technicians have the specialized training to install, repair, and maintain these advanced systems. We are committed to helping you find the perfect hot water solution to meet your family’s needs and budget.

Professional Installation

Seamless Tankless Water Heater Installation

Making the switch to a tankless water heater is a smart investment in your home’s comfort and efficiency. Proper tankless water heater installation is critical to ensure your new unit operates at peak performance and lasts for its full expected lifespan. Our experienced plumbers handle every aspect of the installation process, from helping you select the right size and model for your household’s demands to ensuring all gas or electric lines and ventilation are connected safely and up to code.

We take pride in our meticulous workmanship, ensuring a clean and professional setup that integrates seamlessly with your existing plumbing. We’ll remove your old tank heater, install the new compact unit, and provide a full demonstration of how your new on-demand system works. Trust the experts at John Nugent & Sons to get your new tankless water heater up and running flawlessly.

Choosing the Right Unit

Expert Guidance for Your Home

The most important step in a new installation is choosing the right tankless water heater. Factors like your home’s size, the number of bathrooms, and your family’s hot water usage all play a role in determining the correct model. An undersized unit will struggle to keep up with demand, while an oversized one can be an unnecessary expense. Our team provides professional consultations to assess your specific needs.

We’ll explain the differences between gas and electric models, discuss flow rates and temperature rise, and recommend top-quality systems from leading brands. Our goal is to ensure you get a reliable, high-performance water heater that delivers endless hot water and maximizes your energy savings for years to come. We help you make an informed decision with confidence.

Fast & Reliable Repairs

Expert Tankless Water Heater Repair

Even the most reliable tankless water heaters can experience issues from time to time. If you’re noticing fluctuating water temperatures, strange noises, low water pressure, or an error code on the display, it’s time to call in the professionals. Our highly trained technicians specialize in diagnosing and repairing all makes and models of tankless water heaters. We arrive with fully stocked trucks, prepared to solve the problem quickly and efficiently.

We understand that a lack of hot water is a major disruption to your daily routine. That’s why we prioritize fast response times to get your system back online as soon as possible. From simple part replacements to complex diagnostic work, we have the expertise to fix the issue right the first time. We’ll restore your endless hot water and your peace of mind.

Common Tankless Issues

We Diagnose and Fix It All

Tankless water heaters are complex, and several issues can cause a malfunction. Mineral buildup from hard water is a common culprit, leading to blockages and reduced efficiency. Other frequent problems include ignition failure, flame sensor issues, or problems with the unit’s internal computer. Ignoring these signs can lead to more significant damage and costly repairs down the road.

Our technicians are skilled at troubleshooting these specific problems. We can identify whether the issue stems from a blocked air supply, an exhaust problem, or a faulty component. Don’t let a small issue turn into a major headache. At the first sign of trouble, contact John Nugent & Sons for a professional diagnosis and a lasting repair solution.

Protect Your Investment

Proactive Tankless Water Heater Maintenance

To ensure your tankless water heater operates efficiently and reliably for its entire 20+ year lifespan, regular professional maintenance is essential. An annual tune-up allows our technicians to catch and address minor issues before they become major problems, saving you from unexpected breakdowns and expensive repairs. This proactive service is the best way to protect your investment and keep your system in top condition.

During a maintenance visit, our team will thoroughly inspect your unit, clean internal components, and descale the heat exchanger to remove mineral buildup that hinders performance. We’ll also check all safety controls and ensure proper combustion and ventilation. Regular maintenance not only extends the life of your unit but also keeps it running at peak energy efficiency, saving you money on your utility bills.

The Importance of Descaling

Maximize Efficiency and Lifespan

Northern Virginia is known for its hard water, which contains high levels of minerals like calcium and magnesium. Over time, these minerals form a layer of scale inside your tankless water heater’s heat exchanger. This buildup forces the unit to work harder to heat the water, drastically reducing its energy efficiency and putting stress on its components.

Professional descaling, or flushing, is the most critical part of a maintenance plan. This process removes the accumulated mineral scale, restoring your unit’s performance and preventing clogs that can lead to permanent damage. An annual flush from John Nugent & Sons will keep your hot water flowing strong and ensure you get the maximum return on your tankless investment.

Serving Northern Virginia and surrounding communities since 1975.

Our Simple Service Process

How We Deliver 5-Star Service

We’ve refined our process over four decades to ensure every service call is smooth, professional, and stress-free for you. Our goal is to provide clear communication and expert solutions from the moment you contact us until the job is completed to your satisfaction.

Schedule Your Appointment

Call us or book online, and our friendly staff will find a convenient time that works for your schedule.

Receive a Professional Diagnosis

A licensed plumber will arrive on time, listen to your concerns, and perform a thorough inspection of your tankless water heater.

Get a Clear Explanation & Upfront Price

We explain the issue in plain language and provide a clear, upfront price for the recommended service before any work begins.

Approve the Work

You approve. There are no high-pressure sales tactics, just honest recommendations.

Relax While We Complete the Job

Our expert completes the work efficiently and cleans up the workspace, leaving your home as tidy as we found it.

A Major Advantage

Never Run Out of Hot Water Again

One of the most significant lifestyle improvements you’ll experience with a tankless water heater is the continuous, on-demand supply of hot water. Traditional tank heaters are limited by their storage capacity. Once that stored hot water is used up, you have to wait for the tank to slowly refill and reheat, leading to cold showers and delays in running appliances.

With a tankless system, water is heated instantly as it passes through the unit. This means you can run the dishwasher, do a load of laundry, and have multiple family members take showers back-to-back without ever worrying about the water turning cold. It’s a level of convenience that a traditional water heater simply cannot match.

Smart and Efficient

Save Money and Energy Every Month

Beyond convenience, tankless water heaters offer substantial energy savings that can lower your monthly utility bills. A traditional water heater constantly burns energy to keep its large tank of water heated 24/7, a process known as standby heat loss. This happens whether you are using hot water or not, leading to wasted energy and money.

Tankless units eliminate standby loss. They only activate when a hot water tap is turned on, consuming energy only when needed. This on-demand operation makes them significantly more efficient—up to 34% more efficient than a conventional storage tank heater, according to the U.S. Department of Energy. These savings can add up to a considerable amount over the life of the unit.

By upgrading, you’re not only investing in your home’s comfort but also making a smart financial decision and reducing your home’s carbon footprint. It’s an eco-friendly choice that pays for itself over time through lower energy costs.

Ready for Endless Hot Water?

Whether you’re ready to install a new tankless water heater or need expert service on your existing unit, our team is here to help. Experience the John Nugent & Sons difference with our commitment to quality, integrity, and customer satisfaction.

The Nugent & Sons Difference

A Legacy of Trust and Quality

In a world of fleeting service companies, John Nugent & Sons has remained a trusted name in Northern Virginia for over four decades. Our longevity is built on a simple foundation: treat every customer with respect, provide honest work at a fair price, and stand behind everything we do. We are not just a service provider; we are your neighbors, committed to ensuring the comfort and safety of our community.

Our plumbers aren’t just licensed and insured; they are career professionals who receive continuous training on the latest technologies, including advanced tankless water heater systems. This ensures that the technician who arrives at your door is a true expert, capable of providing a solution that is both effective and durable. We approach every job with the same level of care and precision, whether it’s a minor repair or a full system installation.

Why Choose Us

Your Local Tankless Water Heater Experts

When it comes to your home’s plumbing, you deserve a team that is reliable, skilled, and dedicated to your complete satisfaction. At John Nugent & Sons, we have built our reputation on these principles since 1975.

Your Full-Service Plumbing Partner

More Than Just Water Heaters

John Nugent & Sons is your trusted partner for all of your home’s plumbing needs. Our licensed plumbers are equipped to handle a wide range of services to keep your systems running smoothly.

Don't Wait for a Cold Shower

Schedule Your Tankless Service Today

Ready to experience the benefits of endless, efficient hot water? Whether you need a fast repair, routine maintenance, or are considering a new installation, our experts are ready to provide the 5-star service you deserve. Contact John Nugent & Sons to schedule your appointment and get a no-obligation quote.

Your Questions, Answered

Frequently Asked Questions

We understand you may have questions about tankless water heaters. Here are answers to some of the most common inquiries we receive from homeowners in Northern Virginia.

How long do tankless water heaters last?

A well-maintained tankless water heater can last 20 years or more, which is nearly double the lifespan of a traditional tank-style heater.

Are tankless water heaters worth the cost?

While the initial investment is higher than a traditional tank, the long-term energy savings, longer lifespan, and endless supply of hot water make them a worthwhile investment for many homeowners. They can increase your home’s value and lower your monthly utility bills.

Do tankless water heaters require maintenance?

Yes. To ensure optimal performance and longevity, we recommend an annual service visit. This includes flushing the system to remove mineral buildup (descaling), which is especially important in areas with hard water.

Can a tankless unit provide enough hot water for my whole family?

Absolutely. The key is proper sizing. Our experts will assess your home’s needs to recommend a unit with a sufficient flow rate to handle multiple simultaneous uses, like running a shower and a dishwasher at the same time.

What are the main signs I need tankless water heater repair?

Common signs include fluctuating water temperatures, a complete loss of hot water, unusual noises like rumbling or banging, low water pressure from your hot taps, or an error code displayed on the unit.adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Still Have Questions?

If you have questions that weren’t answered here or want to discuss your specific home comfort needs, our friendly and knowledgeable team is ready to help. We believe in empowering our customers with the information they need to make the best decisions for their homes. Give us a call today!

Service Area

Northern Virginia Can Count on John Nugent & Sons

Get Started with Nugent & Sons

Schedule Your Service in Northern Virginia Today!

Join thousands of satisfied homeowners who trust John Nugent & Sons for all their plumbing needs. From expert tankless water heater installations to fast repairs, we are committed to providing exceptional service and lasting solutions. Call us or fill out our online form to book your appointment now.