Your trusted and transparent plumbing service provider for New Hampshire and Northern Massachusetts

 Plumbing and Gas Services

Residential & commercial

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Plumbing

We offer plumbing repairs, plumbing renovation services, and new build plumbing services. We’re always available to handle unexpected plumbing issues. Trust us for affordable, high-quality plumbing solutionsthat keep your home or business in top shape.

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Gas

We specialize in gas line installation, repair, and maintenance, ensuring your home or business has a reliable and leak-free system. Whether you need a new gas appliance hookup, gas leak detection, or emergency gas line repair, our certified plumbers provide expert solutions that meet all safety regulations.

About Us

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We are a family-owned and operated business dedicated to delivering superior quality in every project we undertake. Our commitment to honesty and transparency ensures you’ll always be informed about the process from the very start. We don’t cut corners or take shortcuts; instead, we treat each job as if it were our own home, ensuring meticulous attention to detail from beginning to end.

With over 10 years of combined experience in the plumbing and construction industry, Whitney and Tyler set out to make their mark by founding WT Kosik.

Our expert licensed plumbers provide top-quality drain cleaning, water heater repair, leak detection, and emergency plumbing solutions. Whether you need a pipe replacement, sewer line repair, or faucet installation, we handle it all with professionalism and efficiency.

We offer affordable plumbing services for both residential and commercial properties, ensuring your plumbing system runs smoothly. Don’t let a small leak turn into a major problem—contact us today for fast, same-day plumbing repairs and experience the best local plumbing services near you!

Our Service Area

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We are proud to be fully licensed and insured in both New Hampshire and Massachusetts, ensuring our clients receive the highest level of service and professionalism.

We offer plumbing services for both Residential & Commercial Customers.

Our service area is generally Southern New Hampshire and Northern Massachusetts.

Contact Us Today!

Plumbing Services Offered

Residential Plumbing Services

  • Emergency Plumbing Repairs (Leaks, Burst Pipes, Clogs)

  • Drain Cleaning & Unclogging

  • Water Heater Installation & Repair

  • Toilet Repair & Replacement

  • Faucet & Sink Installation

  • Garbage Disposal Repair & Installation

  • Leak Detection & Pipe Repair

  • Sewer Line Inspection & Repair

  • Gas Line Installation & Repair

  • Bathroom & Kitchen Remodeling Plumbing

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Commercial Plumbing Services

  • 24/7 Emergency Plumbing for Businesses

  • Reverse Osmosis installation

  • Medical gas installation

  • Grease Trap Installation & Maintenance

  • Backflow Prevention & Testing

  • Commercial Water Heater Repair & Installation

  • Pipe Repair & Replacement

  • Restroom Fixture Installation & Maintenance

  • Sewer & Water Line Services

  • Industrial-Grade Plumbing Solutions

  • Plumbing Maintenance Contracts

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What Our Customers Say..

  • "We have hired WT Kosik for multiple plumbing jobs in our 48 year old home. Tyler has been extremely professional and reliable in helping us solve some unique plumbing challenges in our older home. They are reasonable in their pricing and respond as soon as they possibly can especially if it’s an urgent situation. I have referred some friends and neighbors to WT Kosik when they were in need of a plumber. They were also extremely satisfied with their work and commented on Tyler's professional and friendly manner. I would highly recommend them for any plumbing job you may have in your home or business."

    Barbara C.

  • "Tyler from start to finish answered all our questions and was very informative on how he was going about his work. Tyler installed a navien boiler for our radiant heated garage floor. Absolutely beautiful work nice and neat, cleaned up after. 10/10 highly recommend WT Kosik for all your plumbing needs!"

    - Zach and Brian J.

  • “I highly recommend WT Kosik for all of your plumbing needs. I’ve known Tyler for 6+ years and he’s always been the ultimate professional. They are very well priced, and extremely responsive, especially in an emergency. Tyler has replaced various bathroom fixtures and leaky pipes, my water heater, a booster pump just to name a few things. If you’re looking for a reliable, trustworthy local plumber Tyler is your guy!”

    Barbara B.

$100 off

first plumbing service

for first time customers 

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