(609) 799-3434

Tankless Water Heater Replacement from a Team That Specializes In It

When a tankless system fails, it is not just an inconvenience, it is a system the home depends on that suddenly stops delivering.

Princeton Air’s licensed plumbers install tankless water heaters across Mercer County every week, which means the gas sizing, venting, and flow rate considerations that can trip up a general plumber are already handled correctly.

Your tankless water heater replacement in New Jersey comes with a clear assessment, written pricing, and a clean install completed in a single visit. You stop thinking about the system entirely, and the household runs the way it should when hot water is consistent and reliable. Call Princeton Air or schedule online today.


24/7 Emergency Tankless Water Heater Replacement Service

A tankless unit that will not fire cuts the household off from hot water the same way a leaking tank does.

Tankless emergencies look different from tank failures because there is no floor of water to clean up, just a system that has silently stopped producing.

A Princeton Air plumber on the phone can help you verify gas supply, reset the ignition sequence where appropriate, and determine whether the issue is repairable on the spot or needs full replacement. A licensed plumber is on the way regardless of the outcome of that conversation.

(609) 799-3434

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How Your Tankless Water Heater Replacement Actually Goes

Tankless work is a plumbing, gas, and venting project all at once, which is why the team doing it makes the difference.

Four steps from first call to continuous hot water restored.

A phone call or online booking puts you on the schedule with a real arrival window. The team member handling intake confirms the visit, and the plumber calls on the way.

A licensed plumber walks the space, reviews the existing unit, the gas line, the venting path, and household hot water demand. You see one or two options matched to the home and the household, with written pricing before any work is committed.

The crew brings the new unit and every gas, venting, and plumbing component the project requires. The old unit is removed, the new one is mounted cleanly on the wall, and every connection is pressure-tested before the plumber calls the job done.

Before the crew leaves, the new tankless unit is fired, run through multiple draws, and verified at the temperature you prefer. The controls are walked through with you, the warranty is explained, and the first maintenance interval is put on your calendar.

(609) 799-3434


What Our Customers Are Saying

100% Satisfaction Guarantee

4.7
Based on 6436 reviews
We have used Princeton Air twice for our HVAC and once for plumbing. Each time, the technician was courteous and professional, and the issues were resolved. We recommend Princeton Air!
Tech from Princeton Air (Brian Hassan) showed up on time and performed yearly maintenance on our Kohler Generator. Very professional and courteous technician. Thanks for taking care of our generator like it was your own.

Just had a tech Cruise Rodriguez trouble shoot a minor wiring issue on our new Carrier furnace which was installed this week. As we were installing a new thermostat WiFi Honeywell there was a mismatch which Cruise located and rewired. System seems to be up and running with new thermostat.
Thank you Cruise for your expert help in resolving this issue.
Dominic is very professional and clearly knows what he is doing .
Jonathon and Louis were professional and neat! They Answered all my questions
Dominic was extremely pleasant, professional, and thorough,. He was also quite efficient. He quickly diagnosed the situation and was able to correct it. He also took the time to patiently explain my thermostat to me. Then he signed me up as a member. So heโ€™s a pretty good sales guy too!
However, I then set up an appointment for maintenance and twice Princeton Air canceled me. Iโ€™m now set up for maintenance the end of June. And thatโ€™s after they tried to set me up the end of July and I complained.And this is after Dominic signed me up as a member. Thereโ€™s something very wrong with their business model and I do not consider this good customer service. I will likely have to look for a different serviceโ€ฆ. something more responsive.
I had a great experience with Princeton Air. I had an issue with a part of my healer leaking. Within an hour of calling about this problem, Dylan, the technician, arrived at my house. He soon identified the problem. The next day 3 technicians came back and replaced the faulty part.
Repair went smoothly and efficiently, very satisfied.
One of the worries anyone with a new system would have is if it turns bad, how can it be cared of. Princeton Air answers that question. They responded quickly, sent technicians to look at the issue, and found the proper solution for you. The coordinator at the office is very nice; she would answer my email, and call me back about it even it was on weekends. Such a call is important because it tells you that you are not left out! Wish they will continue the good service. Feng.
Always appreciative of service from Princeton Air. This time it was to install a new quick-Connect hose for the gas grill. Friendly, knowledgeable, and efficient. Thank you for the great service.
Knowledgeable, Pleasant, provided insight for me to make an informed decision that best meets my needs
Technician was knowledgeable. He was able to find the issue quickly and fix the problem without issue.
Very good service. Cruise did a terrific job resolving our problem and was a pleasure to speak with.
I am so thankful to Princeton Air for sending to me your very best technician, Dominic M, on April 2 to do the maintenance for my air conditioner! Dominic is very professional, knowledgeable and talented. He was so thorough and he explained everything to me as he did it in a way to be sure I could understand. He explained what was working well and what problems needed to be addressed, then came out 2 days later and completed the repairs! I'm so thankful and I would highly recommend Dominic M!!
Brian Hassan the tech assigned to us was excellent. He was professional courteous and knowledgeable. I will ask for him again if we need anything. I will be using Princeton Air for electrical HVAC and plumbing

Thanks Brian and Princeton

Andrew

Today I had Robert Dinuzo who installed a new attic fan. Robert was knowledgeable , personable and efficient and did a great job. Good service will use Princeton air again

Andrew

Thomas Ciaccia just completed my fall maintenance check. Thomas was professional, efficient have us a full report and was able. Exceptional. Great service . Thanks Thomas

Ryan was here yesterday and did a great job. Unfortunately we need a new HVAC system but Ryan did everything he could to get us back in service. Thanks Ryan you are great

Dominic M was great. He was patient and set our new thermostat for is. It is a new type of thermostat that came with our new heat pump system and we didnโ€™t know how to use it. Dominic really took his time and set it for us he was understanding and we appreciated his effort.

Robert D was here to check a switch and once again he was great. Professional expedient and overall very accommodating .
Tom did a great job of identifying and repairing a pinhole leak in our minisplit AC system. The cost was high, but the amount of labor and material justified it – these things ain't cheap! Tom is a very personable and knowledgeable tech.
Technician arrived promptly and diagnosed the problem with our air-conditioning as being the blower that was not operating properly. Karume advised us of the ordering process, quoted us a price for the part as well as who to contact at Princeton Air Parts Dept on Monday for more information on how long it would take for the part to come in and be installed. Karume is an exemplary employee and is always welcome to make a service call at our house.
Great job.on time great experience
Great experience. Workers explained everything and completed the work.
All communication with the office was excellent. The electrician Brian who did the work explained the issue, the process of the repair and the new work beyond my expectations.
Jonathan was very thorough and professional. Thank you!
Installed new furnace and thermostat
Very professional and addressed all my concerns
Dominic M. And Christian were great honest, thorough, and very professional. We just moved into our new home and are thrilled to have started a maintenance membership with this company. The experience was smooth and reassuring from start to finish. Highly recommend!
Jason was very polite and professional and helpful, kind and willing to listen and share his experienced skills.
Erim is a talented plumber! He fixed my shower faucet with new parts which was very complicated. He was the only one who could do it. Thank you Erim!

(609) 799-3434

Benefits of Replacing Your Tankless Water Heater

Tankless technology has advanced meaningfully over the last decade.

A new unit runs more efficiently, manages simultaneous draws better, and integrates with smart monitoring in ways older equipment did not.

Today’s tankless water heaters use more advanced heat exchangers, improved ignition systems, and better flow sensing than the units they replace. The equipment handles back-to-back draws without the temperature swings older tankless models had.

New tankless units often include app-based monitoring, flow tracking, and alerts when maintenance is due. You know the unit’s status without opening the utility closet, and it tells you before a small issue becomes an emergency.

Modern tankless units heat water only when it is called for, which eliminates the standby losses every tank water heater has. Over the course of a year, the difference adds up to meaningful savings and a noticeably quieter utility space.

New tankless units are engineered for higher efficiency than earlier generations. Monthly gas bills drop meaningfully after replacement, and high-efficiency units often qualify for federal tax credits and utility rebates.

Every Princeton Air tankless water heater replacement carries manufacturer warranty coverage on the equipment and our 100% satisfaction guarantee on the work. The coverage is explained at the end of the install, and follow-up is one phone call away.


Why New Jersey Homeowners Choose Princeton Air for Tankless Water Heater Replacement

Tankless equipment is specialized, and the team doing the replacement should treat it that way.

Princeton Air has built the tankless practice that serious New Jersey homeowners look for.

Every tankless replacement is led by a licensed Princeton Air plumber with specific tankless experience. The team knows the gas sizing, the venting codes, and the flow rate considerations that make the difference between a working install and a frustrating one.

When a tankless unit fails, the household is without hot water entirely. Our dispatch moves a plumber to the home quickly, and most replacement projects have the new unit running within a day or two of the first call.

Tankless equipment sits in the basement or utility space, but the project path often runs through finished rooms. Protective coverings go down along the work path, the space is left the way it was found, and every room the plumber passes through stays clean.

Princeton Air has been serving homeowners across Hamilton Township, Princeton, West Windsor, Lawrence Township, and the surrounding Mercer County communities for more than 50 years. Our tankless practice has grown as the equipment has matured, and the local plumbing code knowledge shows up on every install.

Every option includes written pricing in advance, and applicable federal tax credits and New Jersey Clean Energy Program rebates are captured as part of the project scope.

Every Princeton Air tankless water heater replacement is backed by our 100% satisfaction guarantee. If something is not right, we come back.

Plumbing, electrical, heating, cooling, and indoor air quality all run through one Princeton Air team. Tankless projects occasionally touch the gas line or the electrical panel, and the same company coordinates both trades on one schedule.

Join the Princeton Air Home Comfort Club

Taking care of your home is easier when someone is taking care of it with you.

The Princeton Air Home Comfort Club is a whole-home membership built around four pre-scheduled maintenance visits each year, so the systems you rely on stay in peak condition through every season.

Members receive a discount on service work, credits toward future installations, priority scheduling during the busiest times of year, no dispatch fees when work is performed, and our 24-hour emergency service guarantee. It is the simple way to protect your home, your budget, and your routine year after year.

Princeton Air Technician


(609) 799-3434

Complete Home Services For Your Home

Tankless is one piece of the plumbing, and Princeton Air covers the rest of the house too.

A full-service home comfort company under one roof.

Beyond tankless water heaters, the Princeton Air licensed plumbers take care of tank water heaters, water softeners, fixtures, drains, sewer work, and full plumbing projects across the home.

Licensed Princeton Air electricians handle panels, outlets, surge protection, lighting, and standby generators. Some tankless projects involve electrical tie-ins, and the same company takes care of both trades.

Furnaces, boilers, heat pumps, ductless mini splits, and central air conditioning are all supported by the same Princeton Air team installing your tankless unit. One company for the full temperature and hot water story of the house.

UV purification, whole-home filtration, humidifiers, and dehumidifiers integrate with the rest of the home’s systems to keep the air in the house as well-managed as the water.


Schedule Your Tankless Water Heater Replacement Today

A tankless system that is no longer delivering reliable hot water is the wrong equipment to keep working around.

A Princeton Air licensed plumber can be at your home quickly, review real options without pressure, and have a new tankless unit running the day of the visit. Call Princeton Air or schedule online today.

Princeton Air Technician


Tankless Water Heater Replacement FAQs

What is the typical lifespan of a tankless water heater in New Jersey?

A well-maintained tankless water heater typically lasts 15 to 20 years, longer than a standard tank unit. Annual descaling is especially important in New Jersey’s mineral-heavy water, and the units that receive regular maintenance often reach the upper end of that range.

Does it make sense to replace tankless with tankless, or switch back to a tank?

For most households that chose tankless originally, replacing with a new tankless unit continues to make sense. A Princeton Air plumber can walk through household hot water demand during the assessment and recommend the configuration that fits the home going forward, including tankless, a tank, or a hybrid system.

How long does a tankless water heater replacement take?

Most tankless replacements complete in a single day, including removal of the old unit, mounting of the new one, gas and venting tie-in, and testing. Projects that require new venting or gas line work may extend into a second day.

Are rebates available for tankless water heater replacement?

Yes. High-efficiency tankless water heaters often qualify for federal tax credits through the Inflation Reduction Act and New Jersey Clean Energy Program rebates. Princeton Air captures the available incentives as part of the project scope.

Are permits required for tankless water heater replacement?

Yes. Most New Jersey municipalities require permits for tankless water heater replacement, and Princeton Air pulls the necessary permits as part of the project. Permitting protects you at future home inspections and at resale.

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