About All Island Comfort
Long Island's Trusted Navien Tankless Water Heater Specialists
Proud of Our Roots. Committed to Your Comfort.
For over 20 years, All Island Comfort has been keeping Long Island families warm, comfortable, and safe. Our certified technicians specialize in Navien tankless water heaters, bringing expert-level knowledge to every installation and repair.
Founded by a team of passionate HVAC professionals, All Island Comfort has grown into one of Long Island's most trusted heating and plumbing service providers. What started as a commitment to doing things the right way has turned into a company that homeowners rely on year after year.
Our technicians don't just show up and get the job done. They take the time to explain your options, answer your questions, and make sure you're completely satisfied before they leave. That's the All Island Comfort difference, and it's why more than 8,000 happy customers trust us with their homes.
We chose to specialize in Navien tankless water heaters because we believe in offering the best. Navien's condensing technology delivers endless hot water while cutting energy costs, and our deep expertise with their product line means you get a flawless installation backed by a team that truly knows these systems inside and out.
Our fleet of fully-stocked service vehicles, ready to serve all of Long Island.
Why Homeowners Choose Us
At All Island Comfort, everything we do is guided by a simple principle: treat every home like it's our own.
Customer-First Approach
Your comfort and satisfaction come before anything else. We listen to your needs, explain your options clearly, and never push unnecessary services or products.
Technical Expertise
Our certified technicians have deep, hands-on experience with every Navien model. From condensing to non-condensing systems, we know these water heaters inside and out.
Integrity & Honesty
Upfront pricing with no hidden fees or surprise charges. We'll tell you exactly what needs to be done and how much it costs before any work begins.
Reliability You Can Count On
When we say we'll be there, we'll be there. Same-day and next-day appointments available, with a technician who calls before arriving so you're never left waiting.
How It Works
Getting your tankless water heater serviced shouldn't be complicated. Here's our simple four-step process.
Get in Touch
Call us at (631) 591-2289 or fill out our online form. We're available 24 hours a day, 7 days a week.
Schedule Your Visit
We'll find a time that works for you. Same-day and next-day appointments are often available, so you won't be stuck waiting.
Diagnosis & Pricing
Your technician calls before arriving, diagnoses the issue on-site, and provides clear, upfront pricing before any work begins.
Problem Solved
We get the job done right the first time. Your system is back up and running, and you're completely satisfied with the work.
Ready to Experience the All Island Comfort Difference?
Whether you need a new Navien tankless water heater installed or your current system repaired, our team is here to help. Call us today or schedule your service online.