Tankless water heaters · New Jersey

Endless hot water, on demand.

Tankless water heater installation, repair, and maintenance across New Jersey. Every system is properly sized, professionally installed, and fine-tuned for peak performance.

  • Certified technicians
  • Properly sized systems
  • Backed by our guarantees
A Mr. Tankless technician servicing a wall-mounted tankless water heater
Licensed & localNJ Plumbers #9366
“From the first phone call to the final installation, he was responsive, professional, and transparent about the process and prices.”
J M · Google review

Why go tankless

Ditch the tank. Keep the hot water.

Traditional tanks collect rust and sediment over time, losing efficiency and driving up energy costs, especially in homes with hard water.

The old way

Traditional tank

  • Collects rust and sediment
  • Heating efficiency drops as it ages
  • Struggles to deliver consistent hot water
  • Prone to premature failure and expensive repairs

Our tankless services

Installation, repair, and maintenance.

Endless hot water for showers, dishes, and laundry, without ever running out. If your tank is struggling, leaking, or no longer efficient, it’s time to upgrade.

Installation

Replacing an old tank or going tankless for the first time? We help you choose the right model and capacity, then handle installation, venting, and system optimization.

Repair

Cold or inconsistent hot water? We diagnose and fix scaling, error codes, ignition failure, and gas or electrical problems with advanced tools and genuine parts.

Maintenance

We inspect, flush, and fine-tune every component to remove buildup, maximize performance, and keep your system running like new.

Tankless installation

The right system, sized for your home.

We combine technical expertise with honest advice. When recommending a tankless water heater, we consider:

  • Your household size and hot water usage
  • The efficiency and limits of your current system
  • Installation cost and long-term energy savings
  • Fuel type, availability, and cost (gas or electric)
  • Maintenance needs and space constraints
  • Energy efficiency ratings and flow capacity
  • Warranty coverage and local code compliance

The goal is the right tankless system for your comfort, your budget, and long-term peace of mind.

Tankless repair

Hot water turned cold?

Sudden cold water or inconsistent temperatures can point to mineral buildup, ignition failure, or sensor errors that reduce efficiency and performance.

DIY fixes are risky. Improper repairs can damage your system or void the manufacturer’s warranty, so it’s always safer to call a licensed professional.

Our technicians diagnose and repair every type of tankless issue, from scaling and error codes to gas or electrical malfunctions, and get your hot water flowing again.

Talk to an expert

Help is one call away.

  • Certified technicians
  • Properly sized systems
  • Backed by our guarantees
866-678-2655

Available 7 days a week

Tankless maintenance

Keep it running like new.

Gas or electric, tankless systems still need periodic care to prevent mineral scaling, ignition failure, and fluctuating temperatures. If your hot water takes longer to heat or turns inconsistent, it’s time for a tune-up.

Inspect

We check every component for leaks, scale buildup, and proper ignition.

Flush

We flush the system to remove the mineral buildup that robs efficiency.

Fine-tune

We tune the unit for peak performance and energy efficiency, for consistent hot water all year.

Safety first

Tankless water heater safety tips.

Every installation we do meets New Jersey safety codes. Keep your home and family safe with these essential guidelines.

    01

    Keep the area clear

    Keep the space around your unit free of dust, debris, and flammable materials. Proper ventilation keeps it running safely and efficiently.

    02

    Know how to shut it down

    If it overheats, gives off an unusual odor, or shows an error code, turn off the power at the breaker or shut off the gas supply. Don’t take it apart or reset it until a professional has inspected it.

    03

    Watch for gas leaks

    If you ever smell gas, leave your home immediately and contact your gas provider or local fire department. Never try to restart or repair the unit yourself.

    04

    Ensure proper ventilation

    Gas models need correct venting to expel exhaust safely. Blocked or damaged vents can cause dangerous carbon monoxide buildup.

    05

    Schedule yearly maintenance

    Have your unit professionally serviced every 12 months to check for leaks, scale buildup, and proper ignition.

    06

    Test the safety valves

    Tankless units still rely on built-in valves to manage temperature and pressure. Have a licensed technician test them regularly.

Make it affordable

Upgrade now. Pay over time.

Flexible financing, utility rebates, and current promotions help make the work your home needs fit your budget.

Flexible financing

Quick approval with a soft credit check that won’t affect your score.

Explore financing

Current promotions

10% off any service for new customers, $299 water heater maintenance, and more.

View promotions

Customer reviews

Trusted by your neighbors.

61 five-star reviewsView our Google profile
“From the first phone call to the final installation, he was responsive, professional, and transparent about the process and prices.”
J MTankless installation
“We contacted Mr Tankless around 3 PM in the middle of a heat wave. Howard was at our house before the end of the day and we had a new AC unit in 48 hrs!”
Lori KowalewskiAC replacement
“I called Howard at 10:15 this morning and by 2:00pm I had a new thermostat installed and a/c running!”
Patricia NevillHeat pump & AC repair

Ready when you are

Endless hot water starts here.

Talk to a real person today. You’ll get honest advice, an upfront price, and work done right the first time.