Tankless Water Heaters in New Jersey

Installation, tank to tankless conversion, repair and annual descaling. Sized for your house, permitted and inspected.

Running out of hot water halfway through the second shower? Paying to keep 50 gallons warm all night? Perfect Air & Water Services installs, converts, repairs and descales tankless water heaters across Central New Jersey. We size the unit on winter numbers, check the gas line and the vent route before we quote, and pull the permit.

Tankless repair and service, available 24/7.

Tankless Services:

Tankless InstallationTank to Tankless ConversionTankless RepairAnnual Descaling & FlushGas Line UpsizingVenting & CondensateRecirculation PumpsError Code DiagnosisNavien, Rinnai & Noritz ServicePermits & Inspection

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Tankless Water Heater Installation and Repair in New Jersey

A tankless unit heats water as it flows, so there is no tank standing by and losing heat between showers. It only delivers on that promise if the install is right. The gas line has to feed the burner, the vent has to match the unit type, and the size has to be set on the coldest water your house will ever see, not on a comfortable average. That is the work.

Tankless Water Heater Installation

New installs and tankless water heater replacement, sized to the fixtures you run at once and set on your coldest incoming water temperature, not an average.

Tank to Tankless Conversion

The old tank comes out, the wall-hung unit goes on, and the gas, vent, water lines and condensate all get rebuilt to suit it.

Tankless Water Heater Repair

Ignition faults, flame loss, flow sensor and high-limit codes, on units we installed and units we did not. A tankless water heater leak usually traces to a fitting or a valve rather than a rusted tank.

Annual Descaling & Flush

A tankless water heater flush circulates descaler through the heat exchanger for about an hour, then rinses it clean. This is the tankless water heater maintenance that prevents most scale codes.

Gas Line Upsizing

Half inch supply rarely feeds a 199,000 BTU burner. We measure the run, check meter capacity, and upsize to three quarter inch or one inch where the math calls for it.

Venting & Condensate

Category III stainless for non-condensing units, PVC or polypropylene for condensing, sidewall termination where the route allows, and a neutralizer on the condensate drain.

Recirculation Pumps

A built-in recirculation pump or a crossover valve at the farthest fixture shortens the wait for hot water and takes the edge off the cold water sandwich.

Condensing vs Non-Condensing

We walk you through the two unit types before you buy, because vent material, condensate handling and efficiency all follow that single choice.

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Tankless water heaters installed by Perfect Air & Water Services with new copper supply lines in a New Jersey home.

Perfect Air & Water Services technician meeting a New Jersey homeowner.

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tank or tankless

Tank or Tankless? How to Decide

Tankless is the better long-term buy in most houses. Not in every house. This is the honest version.

A tank still makes sense when...

stay with a tank

Your heater died this morning and you need hot water back today. A like for like tank swap is the fastest path, and tankless can be the conversation at the next replacement.
Hot water use is light. One or two people who rarely overlap showers will not feel the difference.
The gas line, the vent and the electrical would all need work, and you plan to sell within a year or two.
The house is all electric and the panel has no room for the circuit a whole-home electric tankless unit draws.
Up-front budget is the deciding factor. A tank costs less on day one, even though it gets replaced roughly twice in the life of one tankless unit.

Tankless pays off when...

make the switch

You run out of hot water. Back to back showers with the dishwasher running is exactly the load a properly sized tankless unit is built for.
You want the floor space back. A wall-hung unit frees the corner the old tank stood in.
You are staying put. Tankless units commonly last around 20 years against 8 to 12 for a tank, so the second replacement cycle never happens.
Gas is already at the heater and the line can be upsized without opening finished walls.
You will actually maintain it. One descaling a year keeps the heat exchanger clear and efficiency close to where it started.

About rebates: utility rebates for qualifying high-efficiency gas tankless units are available through PSE&G and New Jersey Natural Gas. The amounts, the efficiency thresholds and the claim deadlines change from year to year, so we confirm what is current for your utility and your exact model at quote time rather than printing a number here. The federal tax credit for gas tankless units ended on December 31, 2025, so a 2026 install does not qualify for it, and any site still advertising it is out of date.

Unit size and BTU rating

Flow demand sets the burner. Most New Jersey homes with two or three bathrooms land in the 150,000 to 199,000 BTU per hour range, and the top of that range costs more than the bottom.

Condensing or non-condensing

Condensing units cost more up front, run more efficiently and vent in plastic. Non-condensing units cost less and need stainless venting, which often eats the difference back.

Gas line upsizing

Moving from a half inch line to three quarter inch or one inch means new pipe from the meter, and occasionally a larger meter from the utility. The length of that run and how open the path is drive the labor.

Venting route

A short sidewall termination through a basement rim joist is the easy case. A long run, a roof penetration, or Category III stainless pipe at several times the per foot cost of PVC all add to it.

Electrical outlet

Gas tankless units need a 120 volt receptacle for ignition and controls. If there is no outlet near the unit, a circuit has to be run to it.

Isolation valves for descaling

A service valve kit lets us flush the unit in about an hour instead of breaking pipe apart every year. It is a small line item that pays for itself the first time.

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time to call

Signs Your Tankless Unit Needs Service

Tankless units warn you before they quit. These are the tells our technicians hear about most.

An error code on the display for ignition or flow, such as a Rinnai 11, a Navien E003 or a Noritz 29
Water that swings hot to cool while nothing else in the house is running
A cold water sandwich, the short cold burst a few seconds into a shower
Less flow than the unit delivered when it was new, especially in January
Rumbling, crackling or kettling noises from scale built up on the heat exchanger
A drip, a wet spot or mineral staining at the connections, the valves or the unit itself
A longer wait for hot water at the bathroom farthest from the unit
A unit past 15 years that is on its second repair inside a year
A gas bill climbing with no change in how much hot water you use

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Copper fittings ready for a tankless water heater installation.

Descaling once a year is the baseline. Homes on well water or on harder municipal supply should not stretch past it, because scale is what sets off the flow sensor and high-limit codes on most of the units we open up.

Our 4 Step Tankless Process

Size

We count the fixtures you run at the same time, set the temperature you want at the tap, and size for a cold New Jersey inlet so the unit still keeps up in February.

Check Gas & Venting

We measure the existing gas line and meter capacity, walk the vent route, locate the condensate drain and the power, then price the real job instead of a guess.

Install & Permit

The old tank comes out, the new unit goes on the wall with isolation valves fitted, and the work is permitted and inspected under the New Jersey Uniform Construction Code.

Commission & Walk Through

We set the output temperature, test every fixture, confirm the unit holds flow under load, then show you the isolation valves and how descaling works so nothing is a mystery.

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Frequently Asked Questions

Tankless Water Heater FAQs

Sizing, gas lines, rebates, descaling and permits, answered the way we would answer them at your kitchen table.

What size tankless water heater do I need?

Add up the fixtures you run at the same time, then work out the temperature rise. A three bathroom New Jersey home running two showers and a kitchen faucet needs roughly 5 gallons per minute. Sizing guides use a winter inlet as low as 40 degrees, and 110 degrees at the tap makes that a 70 degree rise, so 500 x 5 x 70 puts you near 175,000 BTU per hour. That sits at the top of the usual 150,000 to 199,000 BTU residential range, which is why so many New Jersey jobs also need a larger gas line.

Does my gas line need to be upsized for a tankless water heater?

Often, yes. A tank heater runs on a half inch line, while a tankless burner rated near 199,000 BTU per hour usually wants three quarter inch and sometimes one inch. An undersized gas line is the most common source of tankless complaints in the field, and it is an installation problem rather than a unit problem. We measure the run and the meter capacity before we quote so it never turns up as a surprise.

Are there rebates for a tankless water heater in New Jersey?

Yes, for qualifying high-efficiency gas units. PSE&G and New Jersey Natural Gas both run residential water heating rebates, and the amounts, the efficiency thresholds and the claim windows change from year to year. We check what is current for your utility and your exact model when we quote, and we hand you the model number and paperwork you need to file. The federal tax credit for gas tankless units expired on December 31, 2025, so a 2026 install does not qualify for it.

How long does a tankless water heater last?

Around 20 years is the common figure, with some units running longer, against 8 to 12 years for a standard tank. That gap is most of the financial case for going tankless, because a tank gets replaced about twice in the life of one tankless unit. Skipping the annual descaling is what cuts that short.

How much does a tankless water heater cost compared to a tank?

Nationally, a gas tankless installation commonly runs about $2,500 to $6,500, while a straight tank replacement runs about $800 to $2,500. A full tank to tankless conversion sits toward the high end because of the gas, venting and plumbing work that comes with it. Those are national ranges, not our price. We give you a firm number for your house after we look at it.

How often does a tankless water heater need to be flushed?

Once a year is the baseline, and homes on hard water or well water should not stretch past it. We close the isolation valves, circulate a descaling solution through the heat exchanger for 45 to 60 minutes, then flush it clean. Skipping it is how scale builds up and starts triggering flow sensor and high-limit shutdowns.

What does the error code on my tankless water heater mean?

It depends on the brand, because the same fault carries different numbers. Ignition failure shows as 11 on a Rinnai or a Noritz and E003 on a Navien, while scale related high-limit shutdowns show as Noritz 90 or Rinnai 61. Write down the exact code plus the model and serial from the data plate before you call. You can check that the gas valve is fully open and that the vent termination outside is clear, which is a common problem after a storm, but do not keep forcing ignition attempts.

Do I need a permit to install a tankless water heater in New Jersey?

Yes. The work falls under the plumbing subcode of the New Jersey Uniform Construction Code, with mechanical or electrical added depending on the venting and the wiring, and it is filed on a UCC-F100 application. Plan review can take up to roughly 20 business days in some towns, so the permit goes in early. We pull it, do the work to code and meet the inspector.

Why Choose Perfect Air & Water

Family Owned & Operated

When you choose Perfect Air & Water Services, you are treated like family. Our team values honesty, trust, and personalized service - the same values we built our company on.

Certified Technicians

Every job is handled by a skilled expert who follows the latest safety standards and manufacturer guidelines to ensure lasting comfort and performance.

24/7 Emergency Response

HVAC and plumbing problems do not wait, and neither do we. Our emergency team responds quickly to restore comfort and safety to your home.

Upfront Pricing & Estimates

Before any work begins, you will know exactly what is included and how much it costs. We believe in earning your trust with transparency, not pressure.

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Perfect Air & Water Services

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Kiran SharmaJuly 13, 2026

★★★★★

I recently had my entire HVAC system (air conditioner and furnace) replaced by PAWS, and I couldn't be happier with the experience. From the very beginning, Alex was outstanding. After receiving several unbelievably high quotes from other companies, I contacted PAWS. Alex was professional, honest, knowledgeable, and very accommodating. He took the time to explain my options and recommended high-quality equipment without trying to cut corners. Most importantly, he provided a very competitive price without compromising on quality. The installation team was equally impressive. They were punctual, courteous, highly skilled, and incredibly thorough. They completed the installation with great attention to detail, kept the work area clean throughout the process, and left everything spotless when the job was finished. It's refreshing to work with a company that delivers exactly what they promise. The entire experience—from the initial consultation to the final installation—was smooth and professional. I am extremely happy with my new HVAC system and the exceptional service I received from PAWS. I highly recommend them to anyone looking for honest pricing, quality equipment, and outstanding workmanship. Thank you, Alex and the entire PAWS team!

Pablo Ku polancoJune 30, 2026

★★★★★

Nick. M and Dano came in and replace my ac compressor that was not working. They we professional and courteous they complete the work within a few hours. They came in a couple of weeks prior and diagnosed. The issue took a while because we had to wait for the parts to be order. I recommend this company to anyone. Amazing crew.

Alex NerbesJune 24, 2026

★★★★★

“I recently had a new HVAC system installed by PAWS, and I am very satisfied with the entire experience. From the initial consultation to the final installation, the team was professional, knowledgeable, and responsive to all of my questions. They arrived on time, explained the process clearly, and completed the installation efficiently. The workmanship was excellent, and they took the time to ensure everything was operating properly before leaving. The crew was respectful of my home and cleaned up thoroughly after the job was completed. I appreciate their honesty, attention to detail, and commitment to customer satisfaction. I would highly recommend PAWS to anyone looking for HVAC installation or service. Thank you for making the process smooth and stress-free!”

Lisa KhandkerApril 30, 2026

★★★★★

The PAWS team was great from sales to installation. Very professional, competitive pricing and exceptional work. This is the before and after. Replaced water heater and new furnace. Changed from oil to gas heat.

Photo shared by Lisa Khandker in their review

Steven FriedApril 6, 2026

★★★★★

I recently replaced my full AC/furnace system and i am very happy with it. I initially spoke with Alex (sales manager) and he was thorough in explaining my options and costs. After deciding to move forward, the online financial transaction was easy, and Alex walked me through it. I was able to make an appointment to have the work done very quickly. Texts were sent to confirm the appointment, inform me who would be coming to do the work and at what time. The guys arrived exactly on time and worked most of the day. The final product looks and works great! The guys are professional and experienced. I highly recommend calling PAWS if you need a system!

Michael HawkinsMarch 27, 2026

★★★★★

These guys do outstanding work for very competitive prices. Alex was great to work with and helped me choose the correct mini split sizes for my house and the install crew was super professional and experienced, they had the entire three zone system installed in one day. Highly recommend!

Photo shared by Michael Hawkins in their review

RRMarch 17, 2026

★★★★★

Recently signed up with Perfect Air and had my first maintenance check-up fir spring summer. Unfortunately as it was a cold day, the visit could not check the refrigerant level and that has to be done on another day. However the price for their special was well worth it. Also I was fortunate to have the installation supervisor Nazar do my check-up so he spent a fair amount of time taking pictures and checking out the system very thoroughly. He gave some good advice. My recommendation to others is when the technician leaves and it's a cold day, remember to put your heat back on.

Susan BurdeFebruary 25, 2026

★★★★★

It’s our first winter in our new home and suddenly the super old furnace broke in the middle of the night during the coldest winter! I called around for a few quotes and these guys were very responsive, took their time to inspect the whole home, and extremely reasonably priced in comparison. I was nervous being this is my first big home Reno as a new homeowner but Alex was truly incredible. He answered all of my questions and addressed my concerns! We went with an high efficiency furnace and also decided to install an AC condenser at the same time since we already had ductwork and I’m so happy we did! (it was on our list of upgrades.) Nadar, all of the HVAC guys and their electrician Leo were very kind, clean, and respectful. They laid down floor protection and even wore shoe coverings! Their work was very well done and our new system looks so good!! They showed me how to change my filters in the future and helped muffle my loud old duct system. Truly very impressed with their professionalism and happy we went with PAWS! Thank you!! 🩷

Dev RMay 28, 2026

★★★★★

Very Professional and staff. Full Heating Cooling system instilled in timely manner. very satisfied with Perfect Air and Water services.

Teri EMay 23, 2026

★★★★★

They were very professional, nice and very clean. Highly recommend!!

Tankless Water Heater Installation, Sized and Permitted Right

Licensed technicians, one written price before work starts, and financing available. Call now or book your tankless estimate online.

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Service Areas in New Jersey

Perfect Air & Water Services installs, converts, repairs and descales tankless water heaters across Central New Jersey, including:

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★★★★★ Rated 5 stars by New Jersey homeowners

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Map of the central New Jersey towns Perfect Air & Water Services covers

Brick Colts Neck East Brunswick East Orange Edison Elizabeth Franklin Township Freehold Hamilton Township Holmdel Howell Lakewood Marlboro Middletown Monroe PAWS HQ North Brunswick Old Bridge Perth Amboy Piscataway Sayreville Toms River Woodbridge Newark Montclair West Orange Bloomfield Livingston Nutley Belleville Hackensack Paramus Teaneck Fort Lee Passaic Jersey City Union Linden Rahway Westfield Cranford Plainfield Summit Bridgewater Somerville Hillsborough Bound Brook Trenton Princeton Ewing Hightstown New Brunswick Carteret Metuchen South Brunswick Red Bank Long Branch Asbury Park Manalapan Hazlet Matawan Jackson Manchester Barnegat Point Pleasant Manahawkin Mount Laurel Moorestown Marlton Cherry Hill Hammonton Egg Harbor Galloway Atlantic City Pleasantville

Ocean County

Brick, Lakewood & more

✓ Covered

Brick Lakewood Toms RiverJacksonManchesterBarnegatBerkeleyPoint PleasantStafford

Monmouth County

Colts Neck, Freehold & more

✓ Covered

Colts Neck Freehold Holmdel Howell Marlboro Middletown MorganvilleManalapanRed BankLong BranchWallHazletMatawanAberdeenEatontown

Middlesex County

East Brunswick, Edison & more

✓ Covered

East Brunswick Edison Monroe North Brunswick Old Bridge Perth Amboy Piscataway Sayreville WoodbridgeNew BrunswickSouth BrunswickSouth PlainfieldCarteretMetuchenHighland ParkSpotswood

Union County

Elizabeth, Union & more

✓ Covered

ElizabethUnionLindenRahwayCranfordWestfieldPlainfieldScotch PlainsSummit

Essex County

East Orange, Newark & more

✓ Covered

East OrangeNewarkMontclairWest OrangeLivingstonBloomfieldMaplewoodNutleyBelleville

Somerset County

Franklin Township, Bridgewater & more

✓ Covered

Franklin TownshipBridgewaterSomervilleHillsboroughBound BrookFranklin ParkBernards

Mercer County

Hamilton Township, Trenton & more

✓ Covered

Hamilton TownshipTrentonPrincetonEwingLawrenceWest WindsorHightstown

Burlington County

Mount Laurel, Moorestown & more

✓ Covered

Mount LaurelMoorestownMarltonEveshamCinnaminsonDelran

Atlantic County

Egg Harbor, Galloway & more

✓ Covered

Egg HarborGallowayHammontonPleasantvilleLinwoodNorthfield

Bergen County

Hackensack, Paramus & more

✓ Covered

HackensackParamusFort LeeTeaneckEnglewoodRidgewood

Proudly Serving New Jersey

If you have been searching for tankless water heater installation near me, we cover Middlesex, Monmouth, Ocean, Union, Essex, Mercer and Somerset counties. Perfect Air & Water Services handles tankless installation, tank to tankless conversion, repair and annual descaling alongside our heating, cooling and plumbing work, and every install is permitted and inspected.

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Tankless Water Heaters in New Jersey

Installation, tank to tankless conversion, repair and annual descaling. Sized for your house, permitted and inspected.

Get A Free Quote

Tankless Water Heater Installation and Repair in New Jersey

Tankless Water Heater Installation

Tank to Tankless Conversion

Tankless Water Heater Repair

Annual Descaling & Flush

Gas Line Upsizing

Venting & Condensate

Recirculation Pumps

Condensing vs Non-Condensing

Tank or Tankless? How to Decide

Signs Your Tankless Unit Needs Service

Our 4 Step Tankless Process

Size

Check Gas & Venting

Install & Permit

Commission & Walk Through

Tankless Water Heater FAQs

Residential Plumbing

Gas Line Installation & Repair

Water Heater Installation

Water Heater Repair

Why Choose Perfect Air & Water

Family Owned & Operated

Certified Technicians

24/7 Emergency Response

Upfront Pricing & Estimates

Over 420 Positive Customer Reviews

Tankless Water Heater Installation, Sized and Permitted Right

Service Areas in New Jersey

NJ Service Locator

Proudly Serving New Jersey

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