ZSL Plumbing offers a full range of residential and commercial services, including plumbing for new construction and remodeling, emergency repairs, gas line installation, heating solutions, septic and outdoor systems, water filtration, and water heater services throughout Suffolk and Nassau Counties, NY.
Explore offerings from ZSL Plumbing on 856 Johnson Ave in Ronkonkoma, with popular services available at this location.
ZSL Plumbing - Services
64 items
services
Boilers
Boiler Installation
Boiler Repair and Maintenance
Commercial Plumbing
Backflow Prevention
Commercial Kitchen and Restroom Plumbing Installs
Grease Trap Installation
Healthcare Facility Plumbing
Hotels Plumbing Service
Multi-Unit Residential Plumbing
Restaurants and Food Service Plumbing
Retail and Shopping Center Plumbing
Storm Drains -Roof Drains Install and Repair
Construction and Remodeling
Integration with HVAC and Mechanical Systems
New Construction Plumbing
Plumbing Design and Planning
Emergency Plumbing Services
Burst Pipe Repair
Heating Emergency
Sewer Backup Solutions
Slab Leaks
Water Heater Emergency
Gas Line Services
Gas Line Installation
Gas Line Repair
Gas Line Testing
Oil to Gas Conversions
Heating
Baseboard Heating
Radiant Floor Heating
Radiator Installation and Repair
Plumbing Services
Bathroom Remodeling Plumbing
Dishwasher Installation and Repair
Drain Cleaning and Maintenance
Fixture Installation
Hose Spicket Installation and Repair
Kitchen Plumbing Service
Leak Detection and Repair
Pipe Installation and Replacement
Plumbing Inspections
Repiping Services
Residential Plumbing
Shower Installation and Repair
Sink Installation and Repair
Sump Pump Installation and Repair
Toilet Installation and Repair
Water Main Services and Installation
Septic and Outdoor Services
Outdoor Plumbing Repair
Sewer Line Cleaning
Sewer Line Repair
Water Filtration System
Lead Prevention Systems
Maintenance and Filter Replacement
Reverse Osmosis Systems
Whole-House Water Filtration
Water Heater Services
Energy-Efficient Upgrades
Tankless Water Heater Installation
Tankless Water Heater Repair
Water Heater Installation
Water Heater Repair
Reviews
4.9
208 reviews
5 stars
205
4 stars0
3 stars0
2 stars0
1 star3
MD
Marissa DeMartino
4 days ago
5.0
Jon and his crew did excellent work in my new home and were professional from start to finish. He kept me informed, was responsive, and made everything easy and stress-free.
It’s such a relief to have someone reliable, trustworthy, and committed to doing the job right. I wouldn’t hesitate to recommend him to anyone looking for a great plumber!
MO
Mike O
5 days ago
5.0
I was referred to John from ZSL by a friend. I can’t say enough great things about my brief but awesome interaction with John and his partner. They came out to take a look at a boiler issue and correctly diagnosed it to be a chimney issue with a couple of glances. They referred me to Guaranteed Chimney who came out and cleaned the chimney liner and my boiler came back to life with no issue. They also gave me an onsite estimate for a water heater. He spent his time, shared his expertise and did everything he could to solve the issue and didn’t charge me a penny. If you’re on the fence about using a plumber, don’t hesitate for a moment and give these guys a call - they genuinely want to help and I’m without a doubt going to use them next time I have any sort of plumbing related issue
AJ
Apex Joe
Aug 20, 2026
5.0
ZSL Plumbing are the Best! These guys are friendly,respectful and professional and did such a super job. Joe and partners did a great job replacing a very old cartridge, shower arm and plate that was impossible to get off. Rob and Joe had to order the parts and Joe and helper had to come back a couple of days later and got the job done. They cut off the old stuck shower arm and replaced it with a new shower arm,plate and new cartridge. Rob was also very helpful with follow up phone calls and email updates.
Thank you so much for your terrific service.👍A+
KK
Kim
Aug 13, 2026
5.0
“ I cannot recommend this company enough. I was left in a bind when another Plumber failed to show up for a job he already started - for my baseboard heating installation and plumbing for a home renovation. I called ZSL on Saturday morning and Rob (a pleasure to do business with) - came to the house the same day to see what was involved!!! The next week Rob and his crew were installing baseboard heating and plumbing in the house. ZSL did an absolutely excellent job installing the system, the plumbing along with working efficiently and keeping everything clean. The entire team was very friendly and courteous. It is rare to find this level of speed, reliability, and top-tier work! Five stars”!!!
PP
PASP
Aug 11, 2026
5.0
Great plumbers. I met them through a contractor who used them to do some work at my home. I then used them separately on a few occasions as recently as today. Very professional and experienced. No BS just good , reliable, always show up and get things done type of plumbers. Use them, you will not be sorry!
It is recommended to shut off your outdoor water on October 31st (Halloween) and reactivate it on Easter Sunday. This practice helps protect your outdoor plumbing from potential freezing damage during winter months.
High Efficiency boiler vs Standard Boilers?
High efficiency boilers are a modern innovation that require annual maintenance. Standard boilers, on the other hand, are well-established and do not necessitate yearly servicing.
Why do I need water filtration?
Water filtration is essential because tap water often contains impurities such as iron, sand, copper, and other potentially harmful substances. Installing a filtration system not only protects your family's health but also prevents unnecessary plumbing repairs caused by these contaminants.
Are you licensed and insured?
Yes, our company is fully licensed and insured to provide plumbing services in Suffolk County, New York.
Do you offer emergency services?
Yes, we provide 24/7 emergency plumbing services to address urgent issues at any time.
Is it better to get a tank or tankless water heater?
The choice between tank and tankless water heaters depends on your specific needs. Tank water heaters have a lower initial cost but may result in higher energy bills due to constant water heating. Tankless models are more energy-efficient but have a higher upfront cost and may not be suitable for homes with low water pressure.
Why should you use ZSL Plumbing?
ZSL Plumbing is committed to delivering exceptional service with integrity. We strive to offer the highest quality workmanship at competitive prices, ensuring the best value for our customers.
What is this green color thing growing on my copper piping?
The green substance on your copper pipes is likely due to galvanic corrosion. This occurs when dissimilar metals, such as copper and steel, come into contact. If you observe this issue, it's crucial to contact us promptly for professional assessment and resolution.
What are the signs of a slab leak?
Slab leaks occur in pipes beneath a home's concrete foundation. Signs include unexplained increases in water bills, cracks in floors or foundation, warm spots on the floor, and mold growth. If you notice these symptoms, professional inspection is recommended.
Is it better to get a tank or a tankless water heater?
Tank water heaters generally have a lower initial cost compared to tankless models. However, the best choice depends on factors such as your household's hot water needs, available space, and long-term energy efficiency considerations.
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Certified August 23, 2026Yext Knowledge Graph
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