Plumbing Installs & Repairs - Hot Water Heaters

Plumbing Services

Plumbing repair and installation. Ask us about hot water heater installations!

Heating Services

Oil to gas conversion specialist serving Fairfield and New Haven counties

He is a great asset to your company.

Janice & Dave B, Bridgeport

Employees were professional & courteous

Kyle S, New Haven

Very clean work. No shortcuts. Real craftsmen.

Scott, Trumbull CT

You made the process pleasant.

Robert & Nancy, Weston

4.93 Average from 40 Customers – View More

Emergency Plumbing & Heating Available – Call us!

Google Rating

4.7

Based on 29 reviews

James Onze Plumbing and Heating

4.7

Nicholas Brown

16:30 08 Jul 19

This company is fantastic to work with. Great pricing, quick response, and easy communication. Nice, polite, trust worthy people who do a great job! I highly recommend them!

Juliet Majmudar

17:32 23 Apr 19

Jim and his entire company are easy to work with, professional, and deliver solid work on time. Jim and his team are also easy to communicate with. We have hired them for every plumbing job after they first worked for us doing a major pipe rerouting and adding a laundry and a bathroom in our basement. Definitely our go-to plumber!

Danielle T

05:00 19 Apr 19

Daniel Greuter

14:15 13 Apr 19

Highly recommended. Replaced our water heater, excellent worksmanship, communication, and reliability. Went above and beyond for us.

Tina Reid

14:43 01 Apr 19

Extremely efficient, knowledgeable and friendly service!

Dash Gilrain-Lennon

23:06 31 Mar 19

I had never met Jim or his guys before he came to help with my heating conversion. But how I felt when they finished up was that he was the best plumber that you could hire anywhere and he was treating the job like it was for family. I wish there were an option for more than five stars

Susan Rothwell

13:59 31 Mar 19

We've been using Jim Onze Plumbing & Heating for years for big and small jobs. Always very reliable, great service, reasonable prices, and the nicest people. Highly recommended.

Nick Scheets

19:35 30 Mar 19

Melissa Roberts

18:48 30 Mar 19

We’ve used James Onze for several years and it’s consistently been a great experience. Service is punctual and the work is fastidious. Onze performs regular maintenance on our home, answers emergency calls, and done new work on an extensive remodel. Mr Jim has gotten on the phone with us to help us troubleshoot an issue on a Friday night before a summer holiday weekend and once on New Year’s Day. He and Jason have promptly replied to our service calls on weekends. Not that things always go wrong with our system—far from it— but when issues do turn up occasionally, we can always count on Onze to help. This is a family business in the best and truest sense of the word. Kind and professional. We wouldn’t think of using anyone else.

K Haley

20:35 29 Mar 19

Honest honest honest!!! I can not say enough nice things about this family business! We had a huge problem with our water system and they spent time and energy to help us fix it. After a lot of phone calls it was determined that the product was defective and that the product manufacturer would not honor the full scope of the nessesary repairs. They went out of their way to try to resolve this with the company when they were not the original installers of the system. James spent a lot of time explaining alternatives and NEVER tried to upsell us. The guys came in and did the work they promised. It was done cleanly, they fixed any other problems they found and they explained everything without ever making me feel like it was a bother when I watched the work and asked questions. I highly recommend this company and would without reservation recommend them to family or friends. A+++

Scott Hershkowitz

16:51 29 Mar 19

Jim and his son were extremely easy to work with, professional and did a great job. I highly recommend James Onze Plumbing!

Lorraine Norton

01:31 08 Feb 19

Recently I converted from oil to gas and decided to add an on demand hot water heater. The installation is "display perfect"with attention to precise placement of all components and pipes. The idea of heating only the water I'll use and the savings involved is appealing! I also had a garbage disposal replaced in my kitchen. The neatness in this installation is impressive too. I highly recommend James Onze Plumbing and Heating.

Colin Grotheer

02:16 05 Feb 19

These guys are fantastic! James did a natural gas conversion for me and helped me renovate my kitchen and half bath this past year. Both times He and Sons were excellent to work with. Their work was clean, efficient and fairly priced. They were always friendly and easy to talk to and work with. I highly recommend their work for any level of construction or renovation.

Will Joseph

23:33 04 Feb 19

The Onze team cares about all of the jobs they have and all of their customers. They treat every home as if it’s their own with respect quality work and care.

Jeremy Cordero

14:45 14 Jan 19

I've had flawless experiences with these guys since day 1. They've done water main repairs and updates. sinks, garbage disposals, toilets, water lines, hot water heaters, bath tubs, exterior water spickets. No job is too small and no job is too large. Truly professional, knowledgeable and up to date with all technological advances within their trade. Absolutely reliable and are there when needed. I could not recommend them enough. Prices are spot on for the quality of work received. I will continue to use them for all my future plimbing and heating updates and ne.

Brian Joy

01:19 05 Jan 19

They did a great job replacing my water heater and repairing my sink and washer drain.

Carmen Morales

11:56 03 Jan 19

They were professional and courteous. When a technical issue occurred a couple days after the installation of oil to gas conversion with a new tankless heater, they were responsive and were quickly able to correct the problem. I hired them again a few weeks later to replace my sump pump, after i encountered flooding in my basement due to heavy rain fall. They were able to replace my sump pump the same day. Pricing is pretty fair for thier quality work. I recommend and will definately use thier services again.

Adam S

23:23 02 Jan 19

Had James Onze plumbing and heating do a oil to natural gas conversion for me with a high efficiency boiler and to say I was completely satisfied would be an understatement. Extremely professional and informative throughout the whole process. The workmanship of the entire project was top notch and I couldn’t have been happier with the outcome. Highly recommended!!!!

Ariella Spillane

20:28 21 Dec 18

We have used James Onze Plumbing and Heating to tackle our new home reno this year. We took on a major master bathroom & kitchen renovation and I could not thank this company more for their professionalism/work ethic/ & skills in order to turn my house projects into everything I envisioned it would be, not to mention how quickly yet carefully they get the job done. I would definitely recommend them for all your plumbing and heating needs!

C M

20:35 03 Dec 18

I found the members of this family owned business to be fair, honest, reliable, communicative, and good with follow through. They have provided me with routine plumbing services and even replaced my boiler and hot water heater at a price comparable to two other companies quoting the job. I would highly recommend them.

Devin Volage

12:18 24 Sep 18

I highly recommend James Onze Plumbing & Heating. Jim and his sons have now completed two majors projects for us, and conduct yearly maintenance on our new boiler system. For the first project, Jim installed a brand new, high efficiency, direct venting boiler system in our home when we purchased it. Most recently, Jim ran the plumbing for a new half bathroom that we added. In both cases, Jim and his sons are responsive, reliable, efficient, incredibly neat, and effective. The work they do is nothing short of beautiful (we often take guests down to the basement just to check out our new boiler). Perhaps best of all, whenever I have an issue, I can call or text Jim and he's immediately responsive. I don't think I've waited more than a day for someone to come by the house when we need something. And for the larger projects, not more than a week. Above all, everyone I've interacted with from the Onze business have conducted themselves with the highest standard of professionalism and integrity. Highly recommend!

Shawn B.

00:08 22 Sep 18

They did an awesome job on my house. I would definitely recommend them and use them in the future.

Hunter

01:17 07 Aug 18

bedats vlog

23:35 19 Jun 18

Nick Montanino

11:06 11 Apr 18

Excellent experience with this company. We've used this company three times in the past five or so years and we have been very happy with the quality of work and fair price. Onze installed a complete bathroom for us, they've replaced the main sewer pipe inside the basement and have replaced all water faucets for outdoor water connections. They are professional and extremely knowledgeable. We have referred this company to our friends and family many times over and everyone has been very happy with Onze.

Margaret Principi

04:27 17 Feb 18

Alex Egelson

15:52 25 Nov 15

Extremely helpful and quickly resolved a time sensitive plumbing when we had company over. Would definitely recommend to family and friends.

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James Onze Plumbing & Heating is Now - Onze Southern Connecticut Plumbing & Heating

Plumbing repair and installation. Ask us about hot water heater installations!

Oil to gas conversion specialist serving Fairfield and New Haven counties

Emergency Plumbing & Heating Available – Call us!