Scottsdale Tankless Water Heaters

Upgrade to Endless Hot Water With a Tankless System

If you’re tired of running out of hot water or looking to lower your energy bills, a tankless water heater could be the perfect solution. Zest Plumbing & Drain installs and services tankless systems throughout Scottsdale, AZ, helping homeowners and businesses enjoy efficient, on-demand hot water. Unlike traditional models, tankless heaters only warm their contents as needed—saving space, energy, and time. Whether you’re making the switch or maintaining an existing system, we’re here to help you get the most out of your upgrade.

Our Tankless Water Heater Services

Tankless water heaters offer excellent performance and energy savings—but they need proper installation and care to work their best. Zest Plumbing & Drain provides full-service solutions, from new installations and replacements to repairs and regular maintenance.

Tankless Water Heater Installation: We install top-rated tankless systems designed to deliver reliable, energy-efficient hot water. Our team ensures your system is correctly sized and professionally installed for long-term performance.
Tankless Repair Services: If your unit is delivering lukewarm water or showing error codes, we’ll diagnose the issue and fix it fast. Our team is experienced with all major tankless brands.
System Flushing & Maintenance: Over time, mineral buildup can reduce your tankless heater’s efficiency. We offer professional descaling and annual tune-ups to keep your system running at peak performance.
Upgrades From Tank to Tankless: Ready to make the switch? We’ll walk you through the process and handle all necessary plumbing and venting updates to get your new system up and running.

Plumbing Emergency in Arizona?

When you have a plumbing emergency in Arizona, there is no time to waste. Access our online booking 24 hours a day, 7 days a week!

Book Now

Why Choose Zest Plumbing & Drain for Tankless Water Heaters?

Choosing a tankless water heater is a big decision—and Zest Plumbing & Drain is here to make it simple. With years of experience and a dedication to honest, top-quality service, we help Scottsdale residents enjoy worry-free hot water with systems that save space, energy, and money. From consultation to installation, we’re with you every step of the way.

Service Rooted in Scottsdale Expertise: We understand the unique demands of local homes and pride ourselves on fast service, friendly technicians, and lasting solutions.
Specialized Installation and Support: Our team knows tankless systems inside and out, ensuring expert installation and dependable performance for years to come.
Smarter Energy Savings: We’ll match you with the right model for your home’s needs, helping you cut utility costs while boosting overall efficiency.
Straightforward Pricing and Honest Guidance: No confusing jargon or pushy upsells — just clear advice, detailed quotes, and a smooth experience from start to finish.
24/7 Emergency Availability: Plumbing issues don’t keep business hours, and neither do we. Our team is ready around the clock to handle urgent needs and restore your comfort fast.

$50 Off

Water Heater Replacement

Book Now

Expires: Oct 31, 2025
Show coupon to technician to redeem.

Let's Chat!

Name(Required)

Email(Required)

Phone(Required)

Address

How Can We Help?

Frequently Asked Questions

Zest Plumbing & Drain has a knowledgeable and experienced team that can help answer a variety of questions you may have.

Customer Testimonials That Shine

Over 1323 Reviews!

Paula Hampton

2 days ago

October 2025 I moved to a new home and Zest plumbing installed a new water softener and overflow box. They were so informative with information and answered all my questions. The install was done quickly and professionally. Jason was my technician and he was AMAZING! Professional, knowledgeable and friendly. He really took time to explain how the system worked and how to maintain the equipment. Zest Plumbing has been so transparent with services and costs. Their customer service & technicians are top notch. ———— 2024 Zest Plumbing installed my water heater and came out to flush it on Tuesday. There was a lot of calcium build up and a good reminder I need to do this maintenance annually. My technician was Juan Charry Vallejo; he was professional, knowledgeable and very efficient. My water heater is heating up much faster now! Great service; highly recommend Zest Plumbing!!!

Nick Gannon

4 days ago

Where do I begin! Wally with Zest did absolute PHENOMENAL work, at a very reasonable price at an insanely quick pace! He not only fixed both bathroom sinks, he installed two brand new vanities, two faucets, and entirely new under sink lines. Wally cleaned, took the old trashed vanities which were a PAIN, and gave me great nutrition advice (self imposed 😂). Great work Wally and zest, I will most definitely be back! Thanks again!!

Catherine Roe

4 days ago

Alex Gonzales did an excellent job replacing our leaking hose spigot. Thank you!!

Cindi Tadej

5 days ago

Jason is a great plumbing professional...Installed the most amazing RO with Alkaline water today. I need more, to upgrade from contractor builders low quality items, and I will have Zest, and hopefully Jason come back. Professional, respectful, friendly, and the whole office team/scheduling is too!

ZV629 XM63

2 weeks ago

I had one of those days where things just don’t go right. I was cleaning a beloved diamond anniversary necklace and I didn’t pull up the plug in the sink. I figured I would just be really careful. Well, I accidentally dropped the necklace down into the drain. I was in a panic. I called the 1st on the list and I’m so glad I did. A real human answered the phone and she was very kind. A plumber was called out within the given time and quickly retrieved the necklace. What a relief !! Very good company to deal with. I will definitely call them again for a real plumbing issue if we have one. Saving this number👍🏼

Gregg Tucek

2 weeks ago

Len was great! Personable, helpful and gave some insight into our water softener and water heater issues.

Alan Rudy

2 weeks ago

Very thorough and was able to tell me not only what is going on with my plumbing but the best way to handle it. Along with some other things that can be problems. Extremely helpful.

Scott Curtis

3 weeks ago

Zest was on time, quick, fair price and friendly. I highly recommend!

diane benitez

3 weeks ago

I didn't hesitate a second to phone Zest this morning. I needed a plumber for the second time this week. If I could give a 6 Star report, I would. Prompt, thorough, impeccable, kind, fair. ++++++

diane benitez

3 weeks ago

Ron addressed my concern immediately with a phone call and Wally was at my door before noon to repair a leak. He work Is impeccable.

Stephen Harrison

4 weeks ago

The service was awesome. Wally was professional and knowledgeable. I am very happy with the workmanship.

Carolyn ONeal

1 month ago

Thanks for fast and quality service-Wally always does a great job explaining the issue and the options for fixing it!

Albert Pepe

1 month ago

Second time using this company. They scheduled the estimate and completed the work the next day. The technician, Wally, was on time, worked efficiently and made sure all the issues were addressed. Reasonably priced and clean quality work. Replaced 3 shut offs and a bathroom sink fixture.

Nau Boarder

1 month ago

We recently had an emergency plumbing backup at our small business which effectively prevented our business from being able to operate. It was in the evening, and we were concerned about whether we could open our doors the next day. I called and Diana was able to have someone to our facility first thing in the morning - long before we opened our doors for business. Wally showed up on-time, with a motivated attitude. He was a great guy and a true professional. He didn't mess around with trying to chit-chat or upsell unnecessary services, he got right down to business. It's incredibly rare to find a contractor who shows up and essentially says, "You have nothing to worry about. I'm not sure exactly what solution we need just yet, but I know for a fact I have it and I'll get you taken care of." No one enjoys having to call an emergency service, but if you have to, I cannot recommend Zest Plumbing enough. They will solve your problem and they will make your day better while they do it.

Airriel Sonstegard

1 month ago

Wally was on time, professional, and got the job done fast! I would absolutely recommend this company!

Christopher Nicholls

1 month ago

Service scheduled 8-12. No call no show. I called and they apologized, came right out, fixed original problems and some I didn’t ask them to.

Alexis Austin

1 month ago

Jesse was fantastic. A slight slip up with scheduling, but quickly got it resolved and did a great job installing my daughter's bathroom vanity and sink.

Frank Scopacasa

1 month ago

Jason did an excellent job of diagnosing my issue and replacing my hot water tank. Zest was great to work with. Friendly staff answered my initial call right away and set up the appointment. The service was on time, knowledgeable, and easy to work with. The replacement work was done quickly and to my satisfaction.