Protect Your Pipes Without Disrupting Your Property

Some lines need a targeted repair. Others require a full rehabilitation from one end to the other.

Princeton Air provides the full range of trenchless pipe lining services so homeowners in Hamilton Township, Princeton, Hillsborough Township, and the surrounding communities have one trusted team to call, whatever the situation looks like underground.

Our trenchless specialists are ready to help you find a solution that protects your home without turning your yard into a construction zone. New Jersey’s housing runs the full spectrum, from century-old Victorian homes in older boroughs, mid-century colonials in established suburbs, and newer construction in growing communities.

The pipes beneath these properties vary just as widely in age, material, and condition. Cast iron, clay, Orangeburg, and aging PVC all present their own challenges. When you call our team, you’re working with technicians who understand the infrastructure beneath local homes and know how to restore it reliably.

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A Trusted Team for Trenchless Pipe Lining in New Jersey

Whether your pipes need a single spot repair or a complete rehabilitation, our team works carefully to restore your home’s plumbing without disrupting the property above it.

When you call Princeton Air for trenchless pipe lining in New Jersey, you’re choosing a company built on decades of professional service, transparent communication, and work that holds up over time. Our technicians arrive prepared, explain every step in plain language, and treat your home with the same care they’d give their own.

We don’t cut corners underground just because no one can see the work. Every liner is installed to last, every repair is verified, and every job is finished with the thoroughness that Princeton Air homeowners have come to expect.

4.7
Based on 6545 reviews
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(609) 799-3434

Reliable Service Without the Stress

When a pipe problem surfaces, the last thing you want is uncertainty about what comes next.

Princeton Air makes the process straightforward, from the first phone call to the final inspection.

Call Princeton Air or schedule online. Our team asks the right questions to understand your situation and arranges a convenient appointment that works around your schedule.

A trained technician arrives with the equipment needed to assess your pipes properly. Using camera inspection technology, we examine the interior of your pipe, identify the source of the problem, and walk you through exactly what we find in plain terms, without technical jargon.

Once you’ve reviewed the plan and feel confident moving forward, our team completes the lining with precision and care. Your pipes are tested after the work is done, the work area is left clean, and your home returns to full function.

What Our Customers Are Saying

100% Satisfaction Guarantee

4.7
Based on 6545 reviews
Diagnosis of a leak, good service, honest and thorough! Excellent service person, Jonathan and Jesus.
Service personnel arrived as scheduled and preformed the maintenance as included in our contract without and question, problem or difficulties.
Jonathan did a great job servicing our AC, heater and water heater all during the same visit. Very knowledgeable and professional. Would highly recommend.
Dominic was prompt, efficient, and most importantly, very friendly. He showed me exactly what was wrong and explained why. The fix was just as quick. Thanks Dominic and Princeton Air!
Dominic was prompt, efficient, and most importantly, very friendly. He showed me exactly what was wrong and explained why. The fix was just as quick. Thanks Dominic and Princeton Air!
The Tech arrived on time, quickly figured out the problem with my AC and fixed within an hour. Pricing reasonable and professional service. Highly recommend!
Cruise was great! He addressed our AC issue quickly and professionally.
Weโ€™ve always been satisfied with McAllister and our recent experience since the merger has not changed that. We needed a new condenser for the A/C and they had a cost effective solution and were able to install it quickly.
Very efficient and on time
Princeton Air condition was extraordinary!! I received a very fair quote immediately after Inspection of my HVAC systemby their talented technician. Their technicians were prompts, professional, and polite. They installed a new system with precision and followed up Professionally. Totally proud to work with Princeton.!!
Ryan G came by and provide tips and recommendations so thorough and with full clarity that I believe will benefit in the long haul. Because of this, I was confident to re-sign up for their maintenance program. He was a true professional who is highly knowledgeable and enthusiastic with the work that he is called to do.
We had Norman. He was here a few hours and checked out my HVAC systems for the summer.
He was careful and professional.
Jose and Corey were a great team and genuinely seemed to care about solving our issues.
I had A/C installed in May, but waited to write a review to see how effective the units can be once it's hot out. Now that I've gone through a couple high temperature days where I turned the mini splits on, I can post a review that I am completely satisfied with the installation by Princeton Air Conditioning and the ease of usage of units. I also will add that it was a pleasure to have Mike C. and Christian J. on the job; they, along with the crews that were on site over the course of the two days, were professional, communicative and upfront. I'd recommend this company to anyone looking for services.
Professional and friendly staff
Air conditioning wasn't working and they came out and got it fixed within a day. Ryan did a great job making sure everything was up and running quickly.
The job was done smoothly and efficiently and right on time
Ryan G got our old air conditioner working again quickly during a bad heat wave and, when we were ready, he explained all our options very well and laid the groundwork to make it easy for us to have installed a new air conditioner. Plus he rescued our cat three times when our cat tried to get out through the garage. He was very kind to all our pets and to us. Thank you, Ryan G!
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.
Tech (Alex) was on time, courteous, very professional. He let me know that, because of my contract w/McCallister, I would have no extra payment for the part needed.
The repair man, Dominic came out this morning to inspect our AC system. He was extremely knowledgeable, incredibly kind, and explained things very well. I work in construction and can tell you that Dominic is one of the best Iโ€™ve seen in years. Princeton air is very lucky to have him as an employee as he is SUCH AN ASSET to your company.

I also want to give a special thanks to Leah the customer service representative I spoke to. Also extremely kind and helpful. I have had the worst two weeks of my life and two strangers taking the time to kind made my heart smile. Thanks again Leah and Dominic. Chuck our Project Manager has been very kind and knowledgeable through this process as well. I am grateful for the people who work here as they made this pretty easy. Thank you all so much.
Latrell Romulus from Princeton Air did a great job of making sure my AC units were working properly. He was thorough and knowledgeable, and communicated potential areas of concern in a very clear manner.
Great job ! Very knowledgeable and informative. He made sure I was aware of any issues and explained it thoroughly! I look forward to having him again !!
Ryan did a fantastic job for us. He was patient and thorough. Thank you, way to go.
This is an outstanding company on all levels.

How Trenchless Pipe Lining Works

Trenchless pipe lining is one of the most significant advances in residential plumbing, and once homeowners see the process, it quickly becomes clear why so many New Jersey properties are a perfect fit for it.

The technology is straightforward, the results are proven, and the method has been trusted by plumbing professionals across the country for decades.

Princeton Air brings this modern approach directly to New Jersey homes, combining camera-guided diagnostics with precision liner installation to restore pipes from the inside out efficiently, cleanly, and with minimal disruption to your day.

Every trenchless project begins underground with a high-resolution camera fed through your existing pipe. This allows our technicians to see exactly what’s happening inside: cracks, root intrusion, corrosion, joint displacement, or buildup. The camera footage guides the entire repair plan so nothing is left to guesswork.

Before the liner goes in, the pipe is cleaned thoroughly. Debris, scale, roots, and buildup are cleared to ensure the liner bonds properly to the pipe wall. A clean pipe surface is essential for a durable, long-lasting result.

A flexible liner saturated with a specially formulated resin is inserted into the damaged pipe and carefully positioned to cover the affected area. For full rehabilitation projects, the liner runs the entire length of the pipe. For spot repairs, it targets only the damaged section.

Once the liner is in position, the resin is cured using heat or UV light, depending on the method used. As it cures, the liner hardens against the interior wall of the existing pipe, forming a smooth, seamless new pipe within the old one.

After the liner has fully cured, our technicians run a post-installation camera inspection to verify the liner is properly seated, fully bonded, and free of defects. Your pipe is then flow-tested to confirm full, reliable function before the job is considered complete.

(609) 799-3434

Signs Your Pipes May Need Trenchless Lining

Pipe problems rarely announce themselves clearly. More often, they show up as subtle symptoms that gradually worsen.

New Jersey homeowners who recognize these warning signs early are in a much better position to address the problem before it becomes a larger and more expensive situation.

A single slow drain is usually a localized clog. But when multiple drains throughout the home are running slowly, gurgling, or backing up at the same time, it often indicates a problem in the main line. Deterioration, root intrusion, or partial blockages in the pipe itself can restrict flow throughout the system.

If the same drain keeps clogging despite repeated clearing, the issue may not be the clog at all; it may be the pipe. Cracks, offset joints, or collapsed sections can trap debris and create conditions where blockages form again and again regardless of how often they’re cleared.

A leaking underground pipe can create moisture pockets in the soil above it. If you’ve noticed areas of your yard that stay wet without explanation, or patches of grass that are noticeably greener and more vigorous than the surrounding lawn, an underground pipe leak may be the cause.

Sewer gas escaping through cracks or failed joints in underground pipes can produce persistent odors near drains, in crawl spaces, or around the exterior of your home. These smells should never be ignored.

Many New Jersey homes built before the 1980s were plumbed with materials like cast iron, clay tile, or Orangeburg pipe, all of which degrade over time. If your home has older pipes that have never been inspected with a camera, it’s worth knowing what condition they’re in before a failure forces the issue.


Princeton Air Technician

(609) 799-3434

Trenchless vs. Traditional Pipe Repair

When homeowners learn that trenchless pipe lining is an option, the natural question is: why would anyone dig?

In some situations, traditional excavation is still the right answer. But for many New Jersey homes, trenchless lining offers meaningful advantages worth understanding.

Traditional pipe repair requires excavating down to the damaged pipe. This often means removing mature trees, tearing up landscaping, breaking concrete driveways, or cutting through finished hardscaping. Trenchless lining accesses the pipe through existing cleanout points, leaving everything above ground exactly where it belongs.

Excavation projects can take several days or longer depending on the depth, length, and location of the pipe. Trenchless pipe lining is typically completed in a single day, meaning less disruption to your household and a faster return to normal operation.

The cured-in-place liner creates a smooth, seamless interior surface that actually improves flow compared to the original pipe. The smooth finish also resists future root intrusion and reduces the conditions that allow scale and buildup to accumulate.

Traditional excavation often requires homeowners to vacate the area, avoid using plumbing, or manage the disruption of heavy equipment on the property for multiple days. Trenchless lining is far less invasive, allowing most households to resume normal activity the same day.

Trenchless lining is not appropriate for every situation. Pipes that have fully collapsed, shifted dramatically out of alignment, or deteriorated beyond a minimum structural threshold may require traditional repair. Princeton Air provides honest camera inspections and straightforward recommendations. If trenchless isn’t the right fit for your situation, we’ll tell you so.


Other Sewer and Plumbing Services

A failing sewer line is often one piece of a larger plumbing picture, and most underground pipe projects reveal related work that deserves attention.

Princeton Air provides a full range of residential plumbing services, so you have one licensed team to call for everything your home needs. Every job is completed with the same camera-first diagnostics and careful workmanship as our trenchless work.

A camera inspection gives you a clear picture of what’s happening inside your sewer line, whether or not you’re planning to line it. Our plumbers use high-resolution cameras to identify cracks, root intrusion, offset joints, and buildup, then share the footage so you understand exactly what we found.

When a pipe has collapsed, shifted dramatically, or deteriorated past what trenchless lining can restore, traditional excavation is the right answer. Our team handles these projects with the same precision and communication as our trenchless work, from the initial dig through final restoration.

Before any liner goes in, the pipe has to be thoroughly clean. Our plumbers use professional-grade hydro jetting equipment to clear roots, scale, and buildup from drains and sewer lines, which is both a standalone service and a prerequisite for trenchless lining.

The water line that brings fresh water into your home runs beneath the same ground as your sewer line and faces many of the same conditions. We diagnose and repair water line leaks and handle full replacements when the existing line has reached the end of its service life.

Below-grade plumbing often depends on pumps to move water and waste up to the main sewer line. When sewer problems are happening in the basement, the pump system is often part of the picture. Our plumbers service, repair, and replace both sump pumps and sewage ejector pumps.

(609) 799-3434


(609) 799-3434

New Jersey Homeowners Choose Princeton Air for Trenchless Pipe Lining

For more than 50 years, Princeton Air has earned the confidence of homeowners across New Jersey through reliable work, honest communication, and results that hold up. When you call our team, you’re working with a company that has earned its reputation one job at a time.

Our team approaches every trenchless project with care for the property above ground as well as the pipes below it. We work cleanly, communicate clearly, and leave your home in better condition than we found it.

We don’t guess at what’s happening underground. Every trenchless evaluation begins with a thorough camera inspection so we can give you an accurate, honest assessment of your pipe’s condition and the most appropriate solution for what we find.

Trenchless pipe lining should never be rushed. Our technicians follow proper installation procedures on every project, verify the liner with a post-installation inspection, and ensure the work meets applicable standards before considering a job complete.

A properly installed cured-in-place liner can last 50 years or more. Our focus isn’t on patching a problem until next season; we restore your pipe in a way that protects your home for decades to come.

Decades of experience serving communities throughout New Jersey means our team understands the homes here: the older pipe materials, the clay soils, the water table conditions, and the expectations of local homeowners. That local knowledge makes a real difference in the quality of our recommendations.


Restore Your Pipes Today

When underground pipe problems show up, the solution doesn’t have to be disruptive.

Princeton Air provides New Jersey homeowners with honest assessments, professional trenchless pipe lining, and dependable results that protect your home without tearing up your property. Our technicians work carefully, communicate clearly, and focus on long-term reliability from start to finish.

Contact Princeton Air today to schedule a pipe inspection or trenchless pipe lining service in New Jersey. Find out what your pipes look like and what it takes to restore them the right way.

Princeton Air Technician


Frequently Asked Questions

What types of pipes can be relined using trenchless methods?

Trenchless pipe lining works with a wide variety of pipe materials including cast iron, clay, PVC, concrete, and Orangeburg. The key factor is whether the pipe retains enough structural integrity to support the liner. A camera inspection helps determine whether trenchless lining is a viable option for your specific situation.

How long does trenchless pipe lining last?

A properly installed cured-in-place liner is designed to last 50 years or more. The smooth, jointless interior surface resists root intrusion and corrosion, making it a long-term solution rather than a temporary fix.

Will trenchless pipe lining reduce the diameter of my pipe?

The liner does add a small amount of thickness to the interior wall of the pipe, slightly reducing the interior diameter. However, because the finished surface is significantly smoother than the original pipe, flow capacity is improved after lining.

How long does the trenchless pipe lining process take?

Most residential trenchless pipe lining projects are completed within a single day. The timeline depends on the length of the pipe, the extent of the damage, and the curing method used. Our technicians will give you a realistic estimate before work begins.

Is trenchless pipe lining safe for older homes?

Yes. Trenchless lining is commonly used in older New Jersey homes where pipe materials like clay tile or cast iron have aged past their reliable service life. The liner stabilizes the existing pipe from the inside without requiring the structural disruption that excavation would involve.

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