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?

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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.

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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 1337 Reviews!

Mary Wallace

2 days ago

How nice to have clean, fresh tasting water! Jesse took great care of us. He not only installed a new RO system, he also cut out and replaced the rotted, moldy wood under the sink. It looks amazing! While there he flushed out the tankless hot water heater and gave us lots of good information about water softeners and conditioners. He is very water knowledgeable and we are very pleased with his work.

Ron Stetson

3 days ago

Wally is excellent at repairs and had a fast response to emergency repair. He did high quality repairs on the main service line and used quality materials. He was very freindly and knowlegable in his work.

Rick Rowlands

6 days ago

I needed a bathroom drain cleared. After being seriously disappointed by a plumber assigned to us by American Home Shield, I asked AI (artificial intel) to recommend the top rated plumber in Scottsdale. AI recommended Zest Plumbing & Drain. I was not disappointed. From my first contact with Diana the dispatcher to Wally the field supervisor my experience with Zest Plumbing was outstanding. The AHS plumber gave up (without trying very hard) on clearing my drain and recommended tearing out a vanity and the toilet to install new pipes because he said my CAST IRON pipes had collapsed...it was baloney! AHS calls this a "MODIFICATION" which is not covered by the warranty. Don't fall for this tactic! Wally from Zest brought in his equipment and 30 minutes later my drain was working properly. He even showed me a video of my clean drain. Before you start tearing out walls give Zest a call!

Dana Miller

1 week ago

Wally Fields assisted me with a water filtration issue. He was amazing! He walked me through how the filtration system worked and explained clearly what was going wrong. He was able to quickly diagnose the issue. He did not have the supplies needed to fix it at the time, but he left to get it and came back the same day to complete the job. He was quick and efficient and the system is working great now. I can't thank Wally enough for his incredible service.

Reed Widen

2 weeks ago

He was awesome, I truly trust him. He aperars to be a good man and employee

Milo K.

2 weeks ago

Zest was the best plumber scottsdale for my water heater repair,super prompt, clear pricing and really respectful in ur home.

Allen Joseph

2 weeks ago

Fast reply. Fair estimate. Great job. Fast.

Giulio DeLuca

2 weeks ago

I had a late eveing call when a small pipe started dripping and i called Zest Plumbing & Drain. The technician arrived promptly, explained our leak detection prrocess clearly and did the repair cleanly. I'm very satisfied and will use them again.

Richard Engelberg

2 weeks ago

We highly recommend Zest Plumbing ... wish we could give them 10 stars! The service we received - on a Saturday - was excellent and professional. The toilets in our home had backed up. Dan came, then an hour later Wally also showed up. Due to their hard work and determination everything was returned to working order. Since moving to Arizona, 3 years ago, we've used several plumbing companies. Zest was BY FAR the very best. We will only call them for any future plumbing needs.

Cathy

2 weeks ago

Professional, courteous, completed service quickly, arrived on time

mateo

2 weeks ago

Called Zest after work, quick honest fix, i will be back.

James Jones

3 weeks ago

Dropped my necklace in drain Zest saved me big time.

Greg Sembower

1 month ago

Wally was amazing. He snaked and put a camera down the septic system, and wasn't completely satified that all was well, so he popped open the septic, and showed me that a septic tank pumping would be in order. Great service, honest work. I will go back to Zest.

Elisa Bell

1 month ago

Wally arrived on time, explained the scope of his work and performed the work professionally.

Thomas Smith

1 month ago

I can’t say enough good things about Wally from Zest Plumbing! I had a leak show up during the last few days before closing on my house... talk about stressful timing. Wally was professional, thorough, and determined to get to the bottom of it. It took a day or two to track down the issue, but once he found the source, he rerouted the hot water line quickly and efficiently. He kept me updated throughout the process and made sure the job was done right. Thanks to Wally’s expertise and responsiveness, the repair was completed in time for closing.

Celeste Correa

1 month ago

My technician was super friendly and professional

Bamidele Durojaiye

1 month ago

Jason from Zest Plumbing came through in timely manner and got our plumbing situation fixed even quicker. Will absolutely remember Zest for any future work.