Dominick Plumbing
(623) 323-4538Call

Scottsdale, AZ · Licensed Plumber

Professional Tankless Water Heater Installation in Scottsdale

Endless hot water, lower utility bills, and a system built for Scottsdale's hard water. Expert installation of Navien Gas and Trutankless Electric tankless water heaters — licensed, permitted, and code-compliant from day one.

  • 100+ Five-Star Reviews
  • Licensed · ROC #350819
  • Navien & Trutankless Specialists
Navien tankless water heater professionally installed with copper plumbing in a Scottsdale home

Why Tankless

Built for Scottsdale homes & hard water

Scottsdale's municipal water is very hard — 275–430 ppm of untreated mineral content. Properly sized and maintained, a modern tankless system handles those conditions far better than an aging tank prone to sediment and corrosion.

  • Endless Hot Water

    On-demand heating means no more cold surprises mid-shower or running out during back-to-back showers, laundry, and dishes.

  • Up To 30% Energy Savings

    Gas units like the Navien NPE-240A2 hit ~0.95 UEF vs. 0.60–0.70 for standard tanks — typically 20–30% lower water-heating bills.

  • Space-Saving Design

    Compact, wall-mounted units free up the closet, garage, or attic space a bulky 50-gallon tank used to fill.

  • 20+ Year Lifespan

    Tankless units last 20+ years with proper maintenance — nearly double the 8–15 year lifespan of a traditional tank.

  • Hard Water Ready

    Scottsdale water runs 275–430 ppm. With the right filtration and annual descaling, tankless handles it better than aging tanks.

  • Lower Emissions

    Less energy use means a smaller carbon footprint, and high-efficiency condensing models produce lower NOx emissions.

What We Offer

Residential & commercial tankless solutions

Residential Tankless Installation

Custom installs for single-family homes, condos, and townhomes across Scottsdale. Whole-house gas systems for large families or electric tankless for compact condos — designed around your actual hot-water demand.

Commercial Tankless Solutions

Dependable hot water for restaurants, hotels, offices, and retail. Multi-unit installs for large facilities, plus ongoing maintenance programs to keep operations running without interruption.

Premium Picks

Top tankless water heaters for Scottsdale

  • Best for large homes

    Navien NPE-240A2

    High-efficiency condensing gas, up to 11.2 GPM — perfect for big Scottsdale homes with multiple bathrooms running at once.

  • Best all-electric

    Trutankless Electric 27kW

    Up to 7.5 GPM, no gas or venting needed. Ideal for smaller homes and condos without gas service.

  • Smart & efficient

    Rinnai RU199iN

    Ultra-efficient gas tankless with WiFi connectivity and built-in recirculation technology.

  • Budget-friendly gas

    Navien NPN-180A

    Non-condensing gas model for installations where atmospheric venting is already in place.

  • Point-of-use

    Trutankless Electric 18kW

    Compact electric unit well-suited for kitchen sinks, guest bathrooms, or small condos.

  • Direct-vent gas

    Rheem RTGH-95DVLN

    Direct-vent gas heater with strong performance across Arizona's seasonal temperature swings.

  • Premium condensing

    Noritz NRC98-DV-NG

    High-efficiency condensing unit with advanced digital controls and durable heat exchangers.

  • Instant point-of-use

    SioGreen IR30 POU

    Infrared electric heater for instant hot water right at the fixture — minimal mineral buildup risk.

  • Heat + hot water

    Navien NCB-E Combi

    Combination unit providing space heating and domestic hot water in a single wall-mounted system.

Our Process

Honest, code-compliant installation

  1. 1

    Home Assessment & Sizing

    We review bathrooms, fixtures, and simultaneous usage, check gas-line capacity or electrical panel, and test water hardness — frequently 400+ ppm in Scottsdale — so scale mitigation is built into every recommendation.

  2. 2

    Custom Design & Product Selection

    We match a Navien gas or Trutankless electric unit to your home, design the install layout for efficiency, and flag any gas or electrical upgrades needed before work begins.

  3. 3

    Licensed, Permitted Installation

    Full plumbing, gas, and electrical work to Scottsdale code: Cat III stainless or PVC direct-vent, dedicated T&P relief valve, and 18-inch garage elevation. Permits ($50–$200) pulled and inspections scheduled.

  4. 4

    Training & Maintenance Setup

    Walk-through of operation, hard-water maintenance plan, first annual descaling scheduled, and your manufacturer warranty fully protected.

FAQs

Common questions

How long does tankless water heater installation take in Scottsdale?

A standard tank replacement runs 2–6 hours. A full tank-to-tankless conversion generally takes 4–8 hours or more. Gas-line upgrades, electrical panel modifications for electric models, venting, and permit inspections can extend the timeline. Scottsdale requires a plumbing permit for every water heater installation.

Do tankless water heaters work well with Scottsdale's hard water?

Yes — with the right maintenance plan. Scottsdale's high mineral content (275–430 ppm, sometimes over 400 ppm) can accelerate scale buildup, reducing flow and degrading the heat exchanger. We recommend annual descaling, a pre-filter or whole-house softener, and regular flow-sensor inspection. Without these measures, manufacturer warranties can be shortened or voided. If hot-water piping exceeds a specific distance, Scottsdale also mandates a demand-initiated recirculation system.

What's the difference between Navien gas and Trutankless electric?

The Navien NPE-240A2 is a condensing gas unit (up to 199,900 BTU/hr) delivering 11.2 GPM at a 35°F rise — enough for large homes with simultaneous showers. It runs at ~0.95 UEF and saves roughly $120/year on gas vs. a 50-gallon tank. The Trutankless GEN3 Electric is a 28-lb wall-mounted electric unit — no gas, no venting, no combustion air. It delivers up to 7.5 GPM on a 200-amp service. Electric installs may require breaker, wiring, or subpanel upgrades adding $1,000–$2,000.

Which unit is right for my home?

For large Scottsdale and Phoenix-area homes with high simultaneous demand, Navien gas is usually the best fit. For condos, smaller homes, or all-electric households, Trutankless electric offers a reliable, space-saving alternative. We'll size and recommend based on your actual hot-water needs and budget.

Is a tankless upgrade worth it if my current heater still works?

Replacing a water heater is generally recommended once repair costs exceed about half its replacement cost. Standard gas and electric tanks last 10–15 years; tankless units last 10–20+ years. If your system is aging, upgrading to tankless is often the most cost-effective long-term path.

Do you handle permits and inspections?

Always. The City of Scottsdale requires a plumbing permit for every water heater replacement, and installation must comply with strict plumbing and mechanical codes. We pull every permit ($50–$200), handle venting and T&P requirements, and schedule inspections so nothing is left uncovered.

Get Started

Schedule your free estimate today

We specialize in Navien Gas Tankless and Trutankless Electric systems — and we'll help you find the right unit for your home's hot water needs and budget. No hidden fees, ever.

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