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CALL NOW (714) 464-7889 | WE'RE AVAILABLE 24/7 |

Professional Tankless Water Heater Replacement in Harbor Island, California - Continuous Hot Water On Demand

Upgrade your home with a high-efficiency tankless water heater that delivers unlimited hot water, saves energy, and lasts for decades

Elder & Young Plumbing

Elder & Young Plumbing

Tired of running out of hot water halfway through a shower?. Old tank heaters lose efficiency over time, leak easily, and waste energy month after month. This is the best time to switch to a modern tankless water heater and enjoy instant hot water.

Homeowners in Harbor Island, California trust Elder & Young Plumbing for reliable tankless water heater installation and upgrades. Every installation is handled by licensed experts using best-in-class products from brands you can trust, such as Rinnai, Navien, and Noritz.

Unlike old tank models, tankless systems only heat water as you use it, providing unlimited hot water while cutting energy bills by up to 30%. Tankless systems are compact, low-maintenance, and built to last almost twice as long as standard tank units.

No matter the size of your home or your hot water needs, we deliver a seamless installation experience backed by our satisfaction guarantee.

Call (714) 464-7889 or Book Online now for a free estimate and expert installation.

Top Reasons Harbor Island Residents Choose Tankless Water Heaters

Modern technology, lasting comfort, and energy savings that add up

A tankless water heater isn’t just a comfort upgrade, it’s a smart, energy-saving investment. Unlike traditional tanks that keep reheating water all day, tankless units heat only what you need, when you need it.

Here’s what makes tankless water heaters the preferred upgrade for today’s homes.

  • Endless Hot Water – Hot water on demand, no matter how many showers or loads of laundry you run
  • Energy Efficiency – Save money by heating water only when needed
  • Space Saving – Compact design fits tight spaces and adds valuable storage room
  • Long Lifespan – Engineered to outlast standard water heaters by nearly double
  • Better-Tasting Hot Water – No standing water or sediment buildup sitting in a tank
  • Environmentally Conscious – Lower energy use means a smaller carbon footprint and cleaner operation

No matter your water heating issue, Elder & Young Plumbing can install a high-efficiency tankless system tailored to your home and usage.

If you’d rather stick with a standard tank model, we can take care of that for you.

Current Special Offers

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Water Heater Repair and Replacement

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$75 OFF Tankless Water Heater Installation

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Call us now at (714) 464-7889 today to get started with your Copper Repipe in Harbor Island, California. We'll be there to help quickly!

See when it’s time to upgrade your water heater and how it can improve your home immediately

You may need a new tankless water heater if you notice.

  • Inconsistent or fluctuating hot water temperature
  • Visible water pooling near your water heater
  • Aging tank model past its recommended lifespan
  • Slow hot water delivery or limited capacity
  • Higher utility bills without an increase in usage
  • Planning a remodel or new addition that increases hot water demand
  • You want to replace your old tank model with an energy-saving tankless system

Before installing, our licensed plumbers inspect your gas lines, venting, and water connections for safety and proper setup.

We’ll guide you in selecting the perfect system to match your home’s size and demand.

Once installed, we fully test the system, fine-tune performance, and teach you how to use it for maximum efficiency.

You’ll enjoy endless hot water and worry-free comfort every day.

Frequently Asked Questions

Do you service what you install

Absolutely. We provide annual descaling, maintenance, repairs, and priority support for our customers across Orange County.

Will my gas line need to be upsized

Sometimes. We measure gas demand for your appliances and confirm venting and combustion air. If an upgrade is needed, we handle it the right way so performance is never compromised.

How much does tankless replacement cost

Price depends on brand, size, venting, gas line work, and water treatment. We give firm, written options before any work begins, and financing is available.

How long does a replacement take

Straight swaps can be completed in a few hours. Tank to tankless conversions often finish the same day, depending on venting path and gas line work.

How fast can you replace my tankless water heater

In many cases we offer same day or next day replacement. Call (714) 464-7889 for current openings or Book Online to lock a time.

What brands do you install

We service and replace most major brands – Navien, Noritz, Rinnai, Takagi, Rheem, AO Smith. We recommend models based on your home, water quality, and budget.

Our Hot Water Guarantee

Your tankless water heater will be installed or replaced to the highest standard, tested for perfect operation, and guaranteed to function properly. If your new system fails due to our workmanship, we will return promptly, fix the issue, and cover all labor and materials at our expense during our workmanship warranty period. No cold showers, no hidden costs - just reliable, efficient hot water you can trust.

Call us now at (714) 464-7889 today to get started with your Copper Repipe in Harbor Island, California. We'll be there to help quickly!

CUSTOMER RATINGS & REVIEWS

Don't take our word for it. Here are some recent reviews shared by satisfied customers. After we help you, we'd love to get a rating and review from you and add you to this list!

Chårlene Låsiter

Chårlene Låsiter

Garden Grove, CA

"Eric is a very hard worker. He's honest, efficient and clean. Most importantly, he handled our plumbing projects and made sure the job is done right. GREAT MAN!"

john_kirker

John Kirker

Tustin, CA

"I highly recommend Elder & Young Plumbing as my top rated choice. We punctured a pipe during a remodel. E&Y was out in a jiffy to solve the problem so that we could continue our project."

tyler_w

Tyler W.

Newport Beach, CA

"A pleasure to find a friendly professional that has your safety and well being in mind for the water heater.  Advises what needs attention and what can wait!"

How can we help you get the job done right?

We love helping our clients and we're here to help you with your plumbing needs, 24/7. We want to be there for all of your plumbing problems no matter what time it is! We know that everyone deserves peace of mind when they call someone in for work around their home or business property so don't hesitate any longer before picking up the phone and giving us a call - let's get started right away!