For Emergency Service Call: 732-734-1350

Our Most Commonly Requested Tankless Water Heater Services

24 Hour Emergency Plumber To Help With Your Tankless Water Heater Needs

When you need emergency tankless water heating service in New Jersey, you want to be sure that the NJ plumber you are calling can handle the job. Save on all makes & models of tankless water heaters, including gas tankless water heating systems, electric tankless water heaters,  all professionally installed by Fully Licensed & Insured King Arthur Plumbing.

We know how to handle a tankless water heating emergency because we have years of experience in taking care of customers in trouble. We know how to diagnose a problem quickly, and we have the tools and experience necessary to take care of your problem quickly.

NJ Emergency Tankless Water Heating Service including

Tankless Water Heaters or Tank water heating repair

Tankless Water Heater Parts & Repairs

When your tankless water heater goes out you’re in a chilly situation. The next time your gas or electric tankless water heating system stops pumping out the hot water we can repair your tankless water heater and get you back to normal. If your water heater has a 6-year warranty and it’s been in service for 3, it might be time to get service or repairs before problems arise. King Arthur Plumbing should be your very first call.

Learn more about Tankless Water Heater Parts & Repairs >

Same Day Tankless Water Heater and Installation

Tankless Water Heaters water heating repair

Same Day Tankless Water Heater Replacement & Installation

We offer same-day tankless hot water heater replacement & installation. If you call us before noon and with same-day delivery we can install your tanklkess water heater and get you back to normal. All King Arthur Plumbing tankless water heater installation technicians are background checked as well as in-person interviews.  King Arthur Plumbing should be your very first call.

Learn more about Same Day Tankless Water Heater Installation & Replacement >


Go ahead! Ask us your plumbing, heating, air conditioning questions.


Save money on your next service, repair, or installation.


Special financing available.


We stand behind all our plumbing, heating, cooling, and drain cleaning services.

Rewards Program

There are so many ways to share the things you love – snap a pic, send a text share a link – and it’s time you were rewarded for spreading the word.
King Arthur Plumbing arrived on time. They changed my water heater and disposed of the old one. I would definitely recommend using them.
Laura S

How a Tankless Water Heater Works

How a Tankless Water Heater Works

With a gas tank-less water heater,When the need for hot water arises by turning on a shower, washing machine, dishwasher or faucet, cold water enters the Tankless Water Heater from the inlet pipe at the bottom of the model. The PC board is then signaled to activate the flame igniter or ignition. With tankless water heaters water is heated as it passes through the coils of the copper heat exchanger, and exits from the hot water outlet pipe. If your tank-less water heating system stops pumping out the hot water we can replace it and get you back to normal. King Arthur Plumbing should be your very first call.

Learn more about Tankless Water Heater Parts, Repairs & Installation >

Tank vs. Tankless Annual Operating Costs*

Tank vs. Tankless Annual Operating Costs*

Tank vs. Tankless Annual Operating Costs*

Tank vs. Tankless Annual Operating Costs*

If you’re looking for a highly efficient water heating solution that costs less than 60¢ per day to operate and is packed with modern features, we recommend a tankless hot water heater. Tankless water heaters use electricity or gas only when needed to move hot water from one place to another instead of generating heat when not in use. If  your interested in servicing or installing a tankless water heater. King Arthur Plumbing should be your very first call.

Learn more about Tankless Water Heater Parts, Repairs & Installation >

Everything professionally installed by King Arthur Plumbing.

Call (732) 734-1350 Now For Fast, Reliable Service!

One of the elements of an emergency that customers can often take for granted is the ability for the plumber to find your location. If you call a company that is not familiar with the layout of your city, then that can create an agonizingly long wait for help to arrive.

NJ Tankless Water Heating Service

We do not make you wait. We are very familiar with your area, and we guarantee that we will have a certified tankless water heating technician at your home quickly. With us, you will not be getting a phone call from a lost plumber asking you for directions while the damage to your home gets worse. We make it our business to know where you are, and we pride ourselves on getting to you as quickly as possible.

New Jersey Emergency Tankless Water Heating Professionals

A tankless water heating emergency does not mean a quick fix that will need more repair work later. We know that the last thing you want to do after we leave is make another appointment to finish your emergency tankless water heating job. That is why we make sure that every certified technician we send out is equipped with the parts he will need to get the job done. If we do need to order a part, then we get it fast and put a temporary solution in place that will prevent further damage to your home.

When you have a  tankless water heating issue in your home that needs immediate attention, you certainly do not want to deal with an unfriendly company that does not understand your problems. We promise that when you call us, you will get a helpful and friendly person on the other end of the line.

In an emergency, you do not need to talk to a plumbing company that prioritizes jobs based on close proximity to the office or how easy the job may be to perform. You want a company that treats every call as an individual emergency that requires immediate attention. We know how frustrating and, in some cases, terrifying a home water heating crisis can be. We don’t put you on a waiting list when you call. We find a certified technician that can get to you right away and take care of the problem. If there will be a delay in our arrival, we will try to give you some quick steps you can take to limit the damage until we arrive.

Call (732) 734-1350 Now For Fast, Reliable Service!

Emergency situations include:

Tankless Water Heater Problems

So the tankless water heater went out (again). Our plumbing repair technicians are local, licensed, insured, and have undergone a thorough background-screening process before servicing your tankless water heating unit. King Arthur Plumbing should be your very first call.

Tankless Water Heater Failures

It happens at the worst times. A tankless water heater can fail for many reasons, and a catastrophic failure may not be something that you can deal with on your own. If the tankless water heater stops working, then call us right away and we will get you through this home crisis.

Electric Tankless Water Heater Problems

A flooded basement can be the result of a broken electric tankless water heater. If the electric on-demand water heater is leaking, then that is a major issue. If your electric instant hot water heating system stops providing heated water for your home or your basement is flooding with water, then call us right away so we can limit the damage and property loss.

Gas Leak Detection

If you smell natural gas, do not hesitate to call us. We can help detect the leak and get back to its source to keep you and your family safe.

We are the top choice for a 24 hour  tankless water heating service.


Tankless Water Heating Service NJ Emergency On Demand Water Heater in New Jersey Tankless Systems, Installation and Repair

We deliver happiness through comprehensive tankless water heating inspections. All our on-demand water heater system installation and repair services are guaranteed. We offer very simple flat fee pricing and services in NJ and NYC. Our transparent prices eliminate any surprise typically associated with other plumbing companies. Whether you live in a six bedroom home or a small studio, we always send out a team to make sure we exceed your expectations. There will never be any surprises associated with your booking.


King Arthur Plumbing is ready to treat you like Royalty with our Red Carpet Service at YOUR convenience.


We rigorously vet all of our Technicians, who undergo identity checks as well as in-person interviews.


Our skilled professionals go above and beyond on every job. Technicians are rated and reviewed after each task.


We bring our own safe tools. Let us know of any special requests and we’ll make it happen.


Online communication makes it easy for you to stay in touch with your Technician.


Pay securely online only when the service is complete.

A full-tankless system tune up.
Preventative maintenance

A full water heater system tune up. Preventative maintenance
The life expectancy of a tankless water heater may vary depending on location and design of the unit, quality of installation, water quality and maintenance schedule. Caring for your on-demand water heater will help increase its efficiency and extend the life of the unit. There are a few simple things we can do to maintain an instant hot water heater and keep it operating efficiently and effectively. For our full system tune up, we had to completely rethink how a tankless water heating system is engineered and constructed. We  designed our maintenance plan and its underlying services— to not only make the whole system much more dependable, but also allowing for more comfortable, precise, and responsive tankless water heating that just feels right.

Learn more about our full system tankless water heater tune up >


King Arthur Plumbing Repairs All Major Brands of Tankless Water Heating Equipment


Our team of technicians is skilled in repairing the most sophisticated high-efficiency tankless water heating equipment. King Arthur Plumbing repairs the following home on-demand water heater products:


King Arthur Plumbing List of Tankless Water Heating Repair and Maintenance Services Includes:



  • Tankless Water Heater Repair
  • No Hot Water Diagnosis (Tankless)
  • Tankless Water Heater system flush
  • Electric or Gas Tankless Water Heater Repair and Replacement
  • On Demand Tankless System Tune Ups and Maintenance
  • Adjusting the water temperature
  • Gas valve replacement
  • Gas leak detection
  • Burner replacement
  • Low water pressure
  • Emergency Services


We Fix and Repair All Tankless Water Heating Systems; All Makes and Models:

  • Takagi
  • Stiebel Eltron
  • Rinnai
  • Ao Smith
  • Navien
  • Rheem
  • Ecotemp
  • Noritz
  • Bosch
  • Rudd
  • And More!
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