Pat Sullivan and the crew unloading the truck

Patrick Sullivan with a customer beside the truck

A radiant heat install by Patrick Sullivan

The backs of the Patrick Sullivan trucks

Servicing all of New Jersey

Your trusted plumbing professionals.

Pat Sullivan, here. Skilled, certified plumbers for homes and businesses — the work explained before a wrench comes out.

Easy financing available

Easy financing available.

Pat now offers customer financing through HFS Financial.

See financing options

Our services

An air handler and insulated ductwork in an attic

Heating & cooling

Pat Sullivan is here for the whole heating and cooling job: furnaces, air handlers, radiant, boilers, and the install left ready to run.

Twin water-treatment tanks, controls, and a blue brine tank

Water treatment systems

When it comes to clean, safe water, Patrick Sullivan Plumbing & HVAC fits filtration and softening to the household — public supply or well — instead of a one-size tank.

The Sullivan truck parked at a sewer dig

Sewer repair & installation

For sewer line replacement or installation, a functioning sewer line is vital for the home’s health and safety. We say what’s wrong before anyone digs.

Gas line services

Natural gas lines for houses and businesses. New runs, repairs, and appliance connections, pressure-checked before we leave.

Faucet & leak repairs

Faucet service and leak detection. The fixture gets fixed when the fixture is the problem. When the pipe behind it is the problem, you hear that first.

Drain cleaning & repairs

Showers, sinks, and the sewer main — cleared, then repaired when another snake would only buy a week.

New water and sewer pipe staged on a job site

Residential & commercial

Plumbing for houses and businesses: new installations, remodels, and the repair that keeps a kitchen, a bath, or a business running.

EXCELLENT

Based on 34 reviews

Susan Hebert

Very happy to endorse Patrick and his team, who installed a new AC system at our home last month. Key points: (1) Options/pricing was easily (by 15-30%) the best of the 3 reputable companies solicited, even with the customized solution we requested to qualify for a JCPL high-efficiency rebate. (2) Patrick’s time estimate was right on even in high season, delivering everything and performing all tasks as promised. (3) The effort, professional workmanship, thoroughness, attention to detail, and cleanliness was top notch. His team worked hard in high temperatures and severe storms that generated a tornado within a mile or two of our Lake Hiawatha home. All is now cool and comfortable here. Patrick was patient with us and is a straight-shooter. Honesty, respect, a good price, and hard work is a great recipe for success. Get an estimate; you’ll thank yourself later!

Noelle Gardner

I am in town visiting my mother who happens to be in the hospital and when I got here, there was water covering a large part of her basement, I found Patrick on the Parsippany Facebook page as a recommendation and I called him. He came over the next morning. He figured out that there was multiple issues going on and went above and beyond to get them all corrected within 48 hours. Andrew on his team showed up and worked harder than I’ve seen anybody work in I don’t know how long to get the old hot water heater out and get the new one installed and clean up all the water. He went above and beyond and helped connect part of the HVAC system that had become separated and Patrick went above and beyond and did some electrical work for me. I highly recommend them to everyone in the area. This is the kind of service that we used to get back in the day and it’s so amazing to know that it still exists.

courtney jones

No need to look anywhere else. This is your guy! Very professional, thorough, and most importantly very honest. He ended up saving me thousands of dollars. Highly recommend this company. I would give more stars if I could!

Nicole Gibney

Honest.Reliable. And a job well done. Highly recommended

Melanie Rueter

We’ve trusted Pat and his company for years and have always had a great experience. We recently met Andrew as well, and he was professional, courteous, personable, and very considerate in our home. Great service, great people, and we’d absolutely recommend them. Not to mention, great shirts!

Andrew Ridner

Top notch quality and professionalism as well as very fair prices . 10 out of 10 quality work and customer service. I highly recommend Pat Sullivan plumbing and heating

Audra Szulborski

Highly recommend using Patrick Sullivan Plumbing & HVAC! They were very responsive when we reached out recently about replacing our hot water heater. After exchanging a few pics via text, his team came out and they could not have been nicer! They completed the job in the amount of time they estimated and left the area impeccable. They also took the time to answer our questions and explain a few things to us that we should know about the new hot water heater. We will definitely use them again when we have a need!

Dayna Otero

Pat and his team are awesome. They have been quick to respond and repair when we have had unexpected problems. They have replaced our a/c, furnace, and water heater. Couldn’t be happier with their services. We will be recommending them to our family and friends!!

Pick Your Cards LLC

Professional and clean work done installing AC unit. Highly recommend!

Thomas Carr

Pat is really responsive, super smart, and will do anything to get the job done right. He’s also a great generalist - great with HVAC and all plumbing needs