Homeowners and businesses throughout Knowlton rely on Hot Water NJ for honest water heater work. From a leaking tank to a brand-new tankless system, we handle it all—fast, clean, and code-compliant.
A licensed tech calls you back—usually within the hour.
A water heater expert will reach out within the hour. Need help now? Call 973-834-8833.
Complete water heater care for every home and business in Knowlton and across Warren County.
Professional, code-compliant water heater installation for tank and tankless systems, sized and installed right the first time.
Installation in Knowlton →Fast, clean replacement of failing or leaking water heaters, often same-day, with old-unit haul-away included.
Replacement in Knowlton →Expert diagnosis and repair for no hot water, leaks, noises, pilot light issues, and every common failure.
Repair in Knowlton →24/7 emergency response for leaking tanks, no hot water, and failures that can't wait until morning.
Emergency Repair in Knowlton →Real feedback from homeowners and businesses we've helped across Northern New Jersey.
"Honest crew—told me my heater just needed a part, not a full replacement. Saved me hundreds."
— Tom B., Knowlton
"Best plumbing experience I've had. On time, tidy, and they hauled the old unit away."
— Greg P., Knowlton
"Professional from the quote to the cleanup. The new Rheem unit works great and the price was right."
— Aisha K., Knowlton
Yes. We keep technicians local to Warren County and stock common units and parts on our trucks, so most Knowlton jobs are completed the same day.
We install and repair every major brand including Rheem, Bradford White, AO Smith, Navien, Rinnai, Noritz, and more—tank, tankless, gas, electric, and hybrid.
Always. We're a licensed NJ plumbing contractor and pull the required permits for every Knowlton installation, with inspection-ready, code-compliant work.
Same-day service available across Northern New Jersey. Licensed, insured, and trusted since 2009.