1. JNR Plumbing

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Stamford, CT

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JNR Plumbing

3.4 (13 reviews)
Closed • 8:00 am - 5:00 pm

Services - JNR Plumbing

Plumbing inspection

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Darien Plumbing & Heating

Darien Plumbing & Heating

(11 reviews)

I have a vintage 1950s kitchen and had what I thought was a pinhole leak in a supply line. Kevin O…read more came to evaluate--turned out there was a screw/cap loose and that was only reason for the leak. I asked for some estimates on other updates to my home while he was here. Will be hiring Darien Plumbing for future work based on their honesty, responsiveness and knowledge. Thank you!

1 STAR -- I strongly recommend avoiding Darien Plumbing…read more Darien Plumbing replaced the heat exchanger in our Navien heating system. After their work, the boiler began repeatedly malfunctioning with 110-01 exhaust blockage errors, a flashing red warning light, gurgling, and condensate drainage problems. We eventually called another plumbing company to determine what was wrong. Their technician contacted Navien Technical Support and inspected the heat exchanger. What he found was unbelievable: when Darien Plumbing replaced the heat exchanger, the factory-installed shipping plug had never been removed. The second plumber described this to us as a "largely amateur mistake" and was genuinely baffled by how it had happened. He explained that the shipping cap is so obvious that he had difficulty understanding how someone replacing the heat exchanger could physically install it and reconnect the system without noticing and removing it. He removed the plug, drained the accumulated condensate, reconnected the condensate tubing, and reset the boiler. The error cleared and the boiler returned to normal operation. And this isn't simply our interpretation of what happened. The second plumber documented the finding in his written service report: "The factory-installed shipping plug had not been removed during the previous replacement." We paid $525 to another company to diagnose and correct the problem. As bad as the workmanship was, what really pushed me to write this review was how Darien Plumbing treated us afterward. We contacted Kevin and explained exactly what had been discovered. Instead of apologizing, taking responsibility, offering to investigate what happened, or even showing basic concern, he was dismissive, argumentative, and extraordinarily unprofessional. His response was essentially that because another plumber had already corrected the problem, there was nothing he was going to do. That is unacceptable. Mistakes happen. Even serious ones. But when another professional identifies and documents a mistake associated with your work, I would expect a reputable company to at least investigate it and treat the customer professionally. Had Kevin simply said, "I'm sorry this happened. Let me look into what went wrong and see what we can do to make it right," I probably would never have written this review. Instead, we paid another plumber to diagnose and correct what that plumber described as an amateur mistake, and then were treated horribly when we brought it to Darien Plumbing's attention. I am attaching the independent plumber's written report, photographs of the repeated 110-01 errors, and a photograph of the factory shipping plug that was removed. I encourage prospective customers to look at the documentation and draw their own conclusions. Based on the workmanship we experienced and the complete lack of accountability afterward, I would never allow Darien Plumbing to work on our heating system again and cannot recommend this company to anyone.

JNR Plumbing - plumbing - Updated October 2026

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