Tankless Water Heater Repair in Madison, SD
For trusted tankless water heater repair in Madison, SD, HWR Plumbing provides quick and efficient service to restore your endless hot water.
- All Major Tankless Brands
- Licensed Technicians
- Long-Term Solutions
- Guaranteed Workmanship
Endless hot water again with tankless water heater repair in Madison, SD.
Don't let a cold shower ruin your day, contact HWR Plumbing for professional tankless water heater repair.
Skilled Tankless Water Heater Repair in Madison, SD for Gas and Electric Units
HWR Plumbing focuses on complete tankless water heater repair throughout Madison, SD. These advanced units offer real energy savings and endless hot water, but when issues arise, specialized knowledge is required.
Our expertise includes:
- Diagnosing error codes and component failures
- Heat exchanger descaling with circulation pump and service valves
- Igniter, flame rod, flow sensor and thermistor testing and replacement

Additional Plumbing Repair Services in Madison, SD
We offer expert plumbing repair services across Madison, SD to fix leaks, restore flow, and keep your system running smoothly.

Customers
Why Choose HWR Plumbing for Tankless Water Heater Repair in Madison, SD?
Choosing HWR Plumbing for your tankless water heater repair means selecting a company committed to quality and customer satisfaction.
- Local Knowledge, We understand how local water conditions and usage patterns can impact tankless water heaters, which shapes our repair strategies.
- South Dakota Expertise, We understand how local water and seasonal conditions can affect tankless systems and tailor our solutions accordingly.
- Certified Pros, Our plumbers are factory-trained and certified to work on all major tankless water heater brands, providing precise diagnostics and repairs.
Citywide Coverage
HWR Plumbing is proud to serve every neighborhood in Madison, so expert tankless water heater repair is always just a call away.
Experienced Team
Each technician at HWR Plumbing is regularly trained on the latest tankless technologies and repair techniques, which means top-tier service for your system.
Safety-First Approach
We adhere strictly to all local Madison and state plumbing codes, so every repair is not only effective but also safe and compliant.
Trusted Certified Madison Plumbing Services Professionals
At HWR Plumbing, we take pride in providing licensed, certified plumbing services throughout Madison, SD. Backed by recognized industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver lasting results you can trust.
Call Us Now
PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationProfessional Tankless Water Heater Repair Services in Madison, SD
Ignition Failure Repair in Madison, SD
If your tankless unit will not fire, the cause may be a dirty flame rod, a bad igniter, low gas pressure or a blocked intake. We test each component and measure gas pressure at the inlet. Undersized gas lines are a common hidden cause when a tankless unit replaced a tank. We correct the issue so the unit lights every time.

Electric Tankless Water Heater Repair in Madison, SD
Electric tankless units offer a compact solution but can encounter problems with heating elements or circuit breakers. HWR Plumbing offers professional electric tankless water heater repair in Madison, SD, addressing electrical faults, confirming proper wiring and replacing faulty elements to restore your hot water supply safely and efficiently.
Tankless Descaling and Flushing in Madison
Hard water leaves calcium and magnesium scale inside the heat exchanger, limiting flow and causing overheating. Many units warn of this with scale codes, such as the LC code on Rinnai models. We connect a circulation pump to the service valves and run a descaling solution through the exchanger. Annual descaling is a smart move for most homes on hard water.
Emergency Tankless Water Heater Repair in Madison, SD
A sudden loss of hot water can be an emergency, especially on a cold morning in Madison, SD. HWR Plumbing offers emergency tankless water heater repair to address critical failures promptly. We are available to troubleshoot issues like major leaks, complete system shutdowns or repeat error codes that prevent any hot water production. Our fast response team works quickly to restore your hot water, often on the same day.
No Hot Water Tankless Repair in Madison
When your tankless unit fails to produce hot water, it is often due to issues with the ignition, gas supply or a clogged heat exchanger. Our technicians in Madison will thoroughly diagnose the root cause, whether it is a faulty igniter, a pressure sensor fault or mineral buildup. We carry common replacement parts for fast fixes, restoring your continuous hot water supply efficiently. We also check for proper venting, which is crucial for the safe operation of your unit.
Noritz Tankless Water Heater Repair in Madison, SD
Noritz tankless heaters are known for their robust design, but can sometimes face issues such as flow sensor malfunctions or venting problems. We provide specialized repair services for Noritz units in Madison, SD, ensuring proper combustion, water flow and exhaust, which are essential for safe and efficient operation.
Navien Tankless Water Heater Repair in Madison
Navien units are known for their advanced condensing technology but can sometimes develop issues with their circulation pump or exhaust systems. HWR Plumbing provides dedicated Navien tankless water heater repair in Madison, addressing common problems like ignition failures or condensate drain blockages. Our team is familiar with Navien's parts and troubleshooting protocols, ensuring a precise and effective repair that maintains your unit's high efficiency.

Flow Sensor and Thermistor Repair in Madison
Tankless heaters rely on flow sensors to start and thermistors to regulate temperature. A dirty inlet filter or failed sensor causes no hot water, fluctuating temperature or the unit turning off mid-shower. We clean filters, test sensor readings and replace faulty parts. Temperature becomes steady again once readings are correct.
Tankless Water Heater Repair Near Me in Madison, SD
When you search for 'tankless water heater repair near me' in Madison, SD, HWR Plumbing is your go-to local expert. Our well-placed teams allow for rapid response times to address your urgent hot water needs.
We are proud to be the trusted local experts for tankless water heater repair throughout Madison. Our rapid response times and commitment to quality mean residents get their hot water systems back online quickly and efficiently, no matter where they are located in South Dakota.
HWR Plumbing at a Glance
- Fully licensed plumbing team covering Madison, SD
- 24/7 emergency service with same-day scheduling
- Clear written estimates, no hidden fees
- 4.8-star rated by 304+ South Dakota customers
Madison Map
Madison Information
- Population
- 6,091
- Area codes
- Local
- Service area
- Madison and communities within 40 miles
- Nearby
- Brookings, Sioux Falls, Brandon, Tea
Mineral scale builds up quickly in water heaters, faucet aerators and fixtures here, so a water softener is a common upgrade for homeowners. For homes in Madison, SD, timely tankless water heater repair is key for fighting mineral buildup and keeping hot water consistent in every season.
Expert Services
Trust our professionals for reliable HWR Plumbing solutions in Madison, SD.
Our Specialized Plumbing Services in Madison, SD
At HWR Plumbing, we provide a complete range of plumbing services across Madison, SD. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Tankless Water Heater Repair Process Works in Madison, SD
Tankless repair starts with the right information, so we ask the right questions up front.
Request a Quote
Contact us at (605) 480-9736 to describe your tankless water heater issue. We will schedule a convenient time for a technician to visit your Madison home and provide an upfront quote.
Diagnosis
Our skilled technician arrives on time, performs a thorough diagnostic check of your tankless unit and explains the problem in plain language.
Expert Repair
We carry out the necessary repairs using quality parts, making sure your tankless water heater is functioning correctly and safely before we leave.
Frequently Asked Questions About Tankless Water Heater Repair in Madison
The cost of tankless water heater repair in Madison, SD can range from $150 to $800 or more, depending on the issue. Simple fixes like sensor replacements might be at the lower end, while major component replacements like a heat exchanger could be higher. We provide a detailed estimate after diagnosis.
Yes, our technicians are trained and experienced in repairing all major tankless water heater brands, including Rinnai, Navien, Noritz, Rheem, Bosch, A.O. Smith and more. We carry a wide range of common parts for various models.
Fluctuating temperatures can come from low flow rates, a dirty inlet filter, a failing flow sensor or scale on the heat exchanger. Crossed hot and cold lines at a fixture can cause it too.
Yes, HWR Plumbing stands behind its work. All our tankless water heater repairs come with a satisfaction guarantee and a warranty on both parts and labor. We will provide full warranty details with your repair estimate.
Minor tankless water heater repairs, such as replacing a sensor or igniter, usually do not require a permit in Madison. Major component replacements, changes to the gas or water lines, or replacing the entire unit may require a plumbing permit to confirm code compliance.
With regular descaling, tankless heaters often last 15 to 20 years. Without maintenance in hard water, problems can start within a few years.
Typical signs include inconsistent hot water, a sudden loss of hot water, strange noises like banging or popping, a rotten egg smell or error codes displayed on the unit. Any of these symptoms call for a professional inspection.
We stand behind our tankless water heater repairs with a solid warranty on both parts and labor. The exact warranty period will be discussed with you before any work begins, providing you peace of mind.
What People Are Saying About Our Plumbing Experts?

Patricia H.
We had a slab leak that two other companies could not find. HWR Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Brandon, SD
James P.
Our commercial plumbing system had a leak under the sink, and HWR Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Sioux Falls, SD
Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Mitchell, SD
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Mitchell, SD
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Brookings, SD
Mark T.
When our office needed drain cleaning, HWR Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Brandon, SD













