"Very fast. John & Noah were great!"

"John was awesome. Definitely kind and hard working!! Great employee!!"

"John was very thorough and professional and all around nice guy"

"John from First Class Leak Detection was very professional. He arrived on time, kept me informed every step of the way, was thorough and efficient. I highly recommend John and First Class Leak Detection."

"The leak detection service is AMAZING!!! The guys who came out were very knowledgeable and dedicated to find the leak. They used leak detection equipment that was not invasive and found a leak under my slab. If you have a leak, call First Class Leak Detection to find it!!"

"This is THE leak detection company you want to call if you’re dealing with a mysterious and difficult leak like the one I had in my bathroom for years. Before finding First Class Leak, I had hired two other professional plumbers, both with excellent ratings, and neither was able to identify the root cause of the problem. Then John and CJ from First Class Leak came in with advanced equipment and impressive expertise. What really stood out to me was that they didn’t simply rely on expensive technology or use it as an excuse to overcharge. Instead, they carefully listened to everything I told them, performed a series of thorough but efficient basic tests, and gave me a fair and honest assessment of the possible causes and solutions. After trying every reasonable test without finding the source, John still didn’t give up. He went back through all the information I had provided about the leak and came up with another test to investigate an unlikely edge case: the possibility that the leak was being caused by an emergency drain from the bathtub. And just when we had almost given up hope—BOOM! The leak resurfaced, and we finally found the source. John was right! John and CJ are truly an outstanding leak detection team. Their persistence, expertise, honesty, and willingness to think outside the box made all the difference. Thank you, John and CJ, for all your hard work and for finally solving a mystery that had been frustrating me for years. I highly recommend First Class Leak!"

"They did a great job! They were able to find the source of a leak which has alluded others. Our technician, John, was great to work with and very courteous. The owner explained everything step by step"

"I want to thank John and Anthony on such amazing service for finding two leaks in my pool . They checked it multiple ways and were able to pin point the exact locations of the leaks . The both of them care getting the job done right and extremely thorough. I highly recommend them to everyone I know ."

"After 2 years and 3 companies trying to diagnose what the issue was with my pool skimmer, First Class Leak Detection came and fixed it within an hour."

"John & Anthony came to find a leak in my inground pool , they came with all the latest equipment and within a few hours were Able to pinpoint where the leak was . Great company and 2 good guys who took the time to explain every step of the way!!! Would definitely recommend the company for anyone who may have a problem with their pool 👍👍"

"John and Kay were extremely professional and diligent. Would highly recommend their service."

"John and Anthony came out; had a bunch of high tech equipment. They dove, tested all my returns (I have an attached spa so all in about 14 returns), skimmers, and drains (4). They used gas, ink, and they had sonar but not sure they needed it. They found a leak in a return dedicated to my cleaner that I no longer use. I closed that return and hopefully that is that. We had a really hard time finding a company to work on gunite pools. Happy I found them, John and Anthony were professional, got right to work, and cleaned up. I would definitely recommend them and the company. I have a video of the leak it this is not allowing me to post. Thumbs up.."

"John and Rob were awesome they helped find a leak in our pool within an hour of arriving when other companies couldn’t figure it out. Great job guys !"

"I hired First Class Leak Detection to help me identify a leak that multiple sprinkler companies could not. TechniciansJohn and Jonny C were great. They fully understood the situation and demonstrated their expertise and found the leak. They were also very responsive to my needs as a customer and friendly to deal with. First Class Leak Detection has multiple tools to help identify challenges that other companies cannot. I would recommend them to anybody."

"Excellent job we are in Manchester New Jersey. We have a problem with high meter construction $500 water bill now the water bill is $45. Thank you, we have a leak of water pipe under the slab floor. The damage and caused mold Servises A1. We really appreciate it. John"

"Professional. Thorough. Communicative."

"Carl and Dan are very accommodating, professional and courteous with their work and would and will recommend them to everyone and anyone needing their services. A wonderful company and very prompt when contacting them as well! Thank you Carl and Dan for your fantastic help! Sincerely Dennis"

"Found the leak in less than an hour. Fantastic job by Carl and Tyler. Thanks so much!"

"I had a hidden water main leak in my home and didn’t even know it until my water bill skyrocketed. Carl from first class leak detection came out the same day, found the leak quickly, and explained everything clearly. Super professional and saved me from major damage. Highly recommend!"

"We had a major water leak from our attic HVAC unit that damaged our hallway and bedroom below. It was overwhelming, but first class leak detection came through for us. They found the source quickly, cleaned everything up, and set up drying equipment right away. They were so compassionate and professional—especially Selda, who made sure we had all the documentation we needed for insurance. It felt like they truly cared about getting our home back to normal. While this experience overall was stressful, working with them made it a lot easier on us"

"Had a slab leak in my Freehold home that had me sweating—until these guys showed up. No upselling, no drama, just a technician named Carl who hooked up some gear, found the leak fast, and explained it to me like a normal human. He didn’t treat my house like a demolition zone, either. Clean work, fair price, and zero follow-up hassles. If your floor’s turning into a pool or your water bill’s suspicious, stop overthinking it and call them."