William J. Guarini Inc.
Review Summary
- Positive: Generally positive experiences with quick service, fair pricing, and knowledgeable technicians. Some reviewers have used them for years and consistently recommend them. They are responsive to issues and provide follow-up fixes.
- Negative: Significant delays and apparent incompetence on a Jersey City water line project. Some scheduling and communication issues. One instance of a missed appointment and another of overbilling. One instance of a potentially unnecessary and expensive chimney repair.
- Mixed: One reviewer had a positive water heater replacement experience but experienced some initial issues and a delayed follow-up visit.

Reviews
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(111 reviews)
Joe Schmo
January 10, 2025
This company secured a major contract from Jersey City to upgrade several water supply lines from led based pipes. This project has been ongoing for the better part of 2 years. They have carried out this project with the finesse and expediency of a hobbled monkey pulling a cart of other hobbled monkeys. The Mario brothers could have done this and saved the princess in half the time. I have never in my life seen such a display of inability in my life. Over the last year, they have been working on the same 6 foot span of plumbing in front of one of the public schools. They have trenched up, filled, trenched again, filled, trenched again, filled, the EXACT SAME SPOT on the street. This is either complete incompetence, or a racket of some sort.
Bob Cleary
January 17, 2025
We had the drainpipe come loose under the kitchen sink. Guarini Plumbing was able to fix it and in the small window of time my wife and I have on weekdays. My wife is a school bus aide, and I am a school bus driver. The garage is an hour away from home. Whatever needs to be done at home on a school day must be done between 10:00 AM and Noon.
Renato Miranda
January 10, 2025
I recently had my gas water heater replaced through PSE&G and they sent Guarini Plumbing to do the work. I had an overall positive experience and would definitely recommend this company. They showed up on the scheduled date/time and the price I was quoted was what I was charged. They had to replace an additional pipe that connects to the chimney (which cost me an extra $200+) but another company had also informed I would need to do that so I was ok with it. The installation guys were friendly and the work was completed in less than an hour. A few hours later I noticed some dripping from the pipe attached to the relief valve which stopped on its own. The next morning I noticed some additional drips and since I didnβt know that was normal I contacted Guarini and they scheduled someone to come between 1pm and 4pm the same day. At 4:30pm no one had shown up so I called them once again and later the same evening 2 different guys showed up. They checked and stated that things were good. They replaced the pipe with a longer one pointing directly in the drain pain (which should have been done initially. The old pipe was short and was dripping outside the pan). Since then things have been ok, Iβve been monitoring daily and I donβt see additional dripping. In summary, there are some things that can be improved but overall I was happy with the work.
BarbD