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Expert Tankless Water Heater Installation in Mission Viejo, California for Unlimited Hot Water

Upgrade to a tankless water heater for on-demand hot water, long-term savings, and lasting reliability

Elder & Young Plumbing

Elder & Young Plumbing

Frustrated by inconsistent hot water or sudden temperature drops?. Your current tank heater could be leaking, wasting energy, or driving up your utility bills. This is the best time to switch to a modern tankless water heater and enjoy instant hot water.

At Elder & Young Plumbing, we specialize in tankless water heater installation and replacement in Mission Viejo, California. Every installation is handled by licensed experts using best-in-class products from brands you can trust, such as Rinnai, Navien, and Noritz.

Tankless water heaters heat water on demand, giving you endless hot water whenever you need it and saving you up to 30 percent on energy costs. Tankless systems are compact, low-maintenance, and built to last almost twice as long as standard tank units.

From replacements to new installations, our team handles everything quickly, cleanly, and with guaranteed results.

Reach out today at (714) 464-7889 or schedule your free tankless water heater estimate online.

What’s Driving Mission Viejo Homeowners to Switch to Tankless Water Heating

Better technology, endless comfort, and real long-term value

A tankless water heater isn’t just a comfort upgrade, it’s a smart, energy-saving investment. Old-style tank heaters waste energy by reheating stored water, while tankless systems heat water instantly as you use it.

Here are the top reasons homeowners choose tankless water heater installation or replacement.

  • Unlimited Hot Water – Perfect for large families, back-to-back showers, and busy households
  • Smart Energy Savings – Stop wasting energy reheating water all day and start saving immediately
  • Space Saving – Free up space with a wall-mounted tankless system
  • Long Lifespan – Lasts 20 years or more with proper care and maintenance
  • Better-Tasting Hot Water – No standing water or sediment buildup sitting in a tank
  • Environmentally Conscious – Eco-friendly technology that’s better for your home and the environment

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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Reach out to us at (714) 464-7889 now to set up your Copper Repipe in Mission Viejo, California. We'll be there to help quickly!

Know when it’s time to upgrade and what benefits you’ll gain immediately

Here are the common signs you might need a new tankless or upgraded water heater.

  • Inconsistent or fluctuating hot water temperature
  • Visible water pooling near your water heater
  • Old tank-style heater nearing 10 to 12 years old
  • It takes too long for hot water to reach your faucets
  • Your energy costs are creeping higher each month
  • You’re remodeling or adding a bathroom
  • You want to replace your old tank model with an energy-saving tankless system

Every installation begins with a full inspection of your home’s plumbing, gas, and vent systems to guarantee a safe, compliant fit.

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

After installation, we test every connection, calibrate the unit, and show you how to operate it for optimal performance.

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

Frequently Asked Questions

What size tankless do I need

We calculate flow rate and temperature rise based on your fixtures and usage patterns. The goal is simple – hot showers and laundry at the same time without dropouts.

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 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 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.

Do you offer water treatment to protect my new unit

Yes. Hard water is common in Orange County. We can add a scale reduction filter or softener to extend the life of your heat exchanger and maintain efficiency.

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.

Reach out to us at (714) 464-7889 now to set up your Copper Repipe in Mission Viejo, 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!