1. No results to show.
Explore Services
Join as a pro
Log in
  1. No results to show.
  1. No results to show.
Explore Services
Sign up
Log in

GNK plumbing services

Top Pro

$75/service call

(waived if hired)

Pipe issues

Responds in about 4 hours

Thumbtack Guarantee

If you hire this pro, you’re covered by a money-back guarantee. Learn more

If you hire this pro, you’re covered by a money-back guarantee. Learn more

About
I'm a Master Plumber. I provide Quality and Perfection. That is my number one goal. I do the job correctly and professionally. I'm not the cheapest, but I am skilled at what I do. Notes : We charge a $100 service fee, but if GNK Plumbing is hired for the job the fee will be waived. Monday to Saturday from 8.00 Am to 6.00 Pm
Overview

Current Top Pro

Hired 275 times

4 similar jobs done near you

Background checked

2 employees

20 years in business

Business hours

This pro hasn't listed their business hours.

Payment methods

This pro accepts payments via Cash, Check, and Credit card.

Top Pro status

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

Top Pro Icon

2024

Top Pro Icon

2023

Services offered
Pipe issues
Repair urgency

I work on non-urgent repairs

I work on urgent repairs

Flooding status

Yes

Projects and media
Projects and media
Reviews

Customers rated this pro highly for professionalism, work quality, and responsiveness.

Excellent 4.9

171 reviews

5

95%

4

1%

3

0%

2

2%

1

2%

Read reviews that mention:

pro avatar
Marianne F.

2 weeks ago

•

Hired on Thumbtack

GNK plumbing was amazing. They arrived within 24 hours on a Sunday. They not only installed a new faucet but upgraded all of my kitchen plumbing. The work and materials were high quality and professional. I highly recommend.

Details: 1 sink • Separate handles control hot and cold water • 1 faucet • Less than a week ago

Sink or Faucet Repair
pro avatar
Milagros H.

Oct 29, 2025

•

Hired on Thumbtack

We recently had an issue with the heating system at one of our rental properties — the tenant was left without heat. GNK responded quickly and handled the situation with professionalism from start to finish. They arrived promptly, diagnosed the problem efficiently, and made the necessary repairs the same day. The tenant now has full heat restored, and they were very pleased with how courteous and respectful the plumber was throughout the visit. Communication was clear, the work was completed neatly, and the overall service was excellent. Highly recommend GNK for anyone in need of reliable, skilled plumbing or heating repair service.

Details: Boiler • No heat • Two-story building • Condo or apartment

Heating System Repair or Maintenance
pro avatar
J C.

May 13, 2025

•

Hired on Thumbtack

Jean from GNK Plumbing was professional, responsive, and knowledgeable from start to finish. He quickly diagnosed the issue with my leaking washing machine shutoff valve and clearly explained my options. He came prepared, did high-quality work, and made sure everything was secure and leak-free before he left. I really appreciated his attention to detail and willingness to go the extra mile to ensure the job was done right. Highly recommend GNK Plumbing and will definitely call Jean again for any future plumbing needs!

Details: Other pipe installation needs • Other plumbing installation or replacement • House

Plumbing Pipe Installation or Replacement
pro avatar
Prem P.

May 12, 2025

•

Hired on Thumbtack

I recently used GNK Plumbing for a water filter replacement, and I couldn't be more impressed. From start to finish, their team was incredibly professional, courteous, and knowledgeable. They responded to my inquiry almost immediately and were able to schedule the service at a time that worked perfectly for me. The technician (Jean) arrived right on time, fully prepared, and walked me through the entire process. The quality of work was outstanding — the installation was clean, efficient, and done with great attention to detail. They also took the time to answer all my questions and made sure everything was functioning perfectly before leaving. It's rare to find a company that combines responsiveness, exceptional workmanship, and true professionalism — GNK Plumbing delivers on all fronts. I highly recommend them to anyone looking for reliable plumbing services. They’ve earned a customer for life!

Details: Point-of-entry filtration system for entire building • I would like to discuss with the professional • House

Water Treatment System Installation or Replacement
pro avatar
Hadeel S.

Dec 12, 2024

•

Hired on Thumbtack

I had the pleasure of meeting Jean. He was very professional and courteous. I had a very complicated and odd issue with my plumbing and he completed the job in no time. He was so fast and fix the issue right away. Hands down one of the greatest services I’ve had. He will forever be my guy if we need anything done. It is so hard to find someone you can trust nowadays. And I am so happy to have found Jean. Thank you Jean and GNK plumbing and heating!

Details: 0 sinks • One handle controls both hot and cold water • 0 faucets • Less than a week ago

Sink or Faucet Repair
Credentials
Background Check

Jean Kossaifi

  • Loading
Thumbtack
Consider it done.
Customers
Pros
Support
© 2025 Thumbtack, Inc.
Thumbtack Guarantee