--- title: "Navien Tankless Water Heaters | Scottsdale AZ" description: "Endless hot water, condensing efficiency — our top tankless pick for Arizona homes. 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Up to 0.96 UEF efficiency, dual stainless heat exchangers, and a built-in recirculation pump on the A2 — endless hot water without the standby loss of a 50-gallon tank.", "url": "https://dominickplumbing.com/products/navien-tankless-water-heaters" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Should I switch from a tank water heater to a Navien tankless in Scottsdale?", "acceptedAnswer": { "@type": "Answer", "text": "If your tank is 8+ years old, you run out of hot water with back-to-back showers, or you're tired of a 40–50 gallon tank sitting in the garage soaking up Arizona summer heat — yes. A Navien NPE-A2 will pay back through lower gas bills, free up garage space, and last 18–20+ years vs. 8–12 for a tank." } }, { "@type": "Question", "name": "How much does a Navien tankless installation cost in Scottsdale?", "acceptedAnswer": { "@type": "Answer", "text": "Most Scottsdale Navien installs run $4,800–$7,200 fully supplied and installed, depending on gas line size, venting path, electrical, and whether we need a recirculation return line. We always provide a flat written quote before starting." } }, { "@type": "Question", "name": "NPE-A2 vs NPE-S2 — which Navien should I get?", "acceptedAnswer": { "@type": "Answer", "text": "Get the NPE-A2 if you want instant hot water at every fixture (built-in recirculation pump and buffer tank). Get the NPE-S2 if you have a dedicated recirculation loop or simply want endless hot water at lower install cost. We'll spec the right one for your home." } }, { "@type": "Question", "name": "Do Navien tankless heaters work with Scottsdale's hard water?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — the dual stainless steel heat exchangers are far more scale-resistant than aluminum competitors. We still recommend annual descaling and pairing it with a softener (we like the Encore Reveal) to maximize the 15-year warranty." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://dominickplumbing.com/" }, { "@type": "ListItem", "position": 2, "name": "Recommended Products", "item": "https://dominickplumbing.com/products" }, { "@type": "ListItem", "position": 3, "name": "Navien Tankless Water Heaters", "item": "https://dominickplumbing.com/products/navien-tankless-water-heaters" } ] } ] --- [![Dominick Plumbing](/assets/dominick-plumbing-logo-kbhHe4U8.png)](/) [Home](/) [Services](/services) - [Water Heater Install & Repair](/services/water-heaters) - [Tankless Water Heater Installation](/services/tankless-water-heater-installation-scottsdale) - [Water Softeners](/services/water-softeners) - [Reverse Osmosis Systems](/services/reverse-osmosis) - [Pipe & Slab Leak Repair](/services/pipe-leak-repair) - [Automatic Leak Detection & Shut-Off](/services/leak-detection-shutoff) - [Drain Cleaning & Hydrojetting](/services/drain-cleaning) - [Toilet Replacement](/services/toilet-replacement) - [Faucet Replacement](/services/faucet-replacement) - [General Plumbing Repair](/services/plumbing-repair) - [View all services →](/services) [Service Areas](/areas) - [Scottsdale](/areas/scottsdale) - [Paradise Valley](/areas/paradise-valley) - [Phoenix](/areas/phoenix) - [Fountain Hills](/areas/fountain-hills) - [Cave Creek](/areas/cave-creek) - [Carefree](/areas/carefree) - [Tempe](/areas/tempe) - [Mesa](/areas/mesa) - [All service areas →](/areas) More - Recommended Products - [TOTO Toilets](/products/toto-toilets) - [Navien Tankless Water Heaters](/products/navien-tankless-water-heaters) - [Trutankless Electric Tankless](/products/trutankless-electric-tankless-water-heaters) - [Encore Reveal Softener](/products/encore-reveal-water-softener) - [Encore IonX5 Conditioner](/products/encore-ionx5-water-conditioner) - [Waterdrop Reverse Osmosis](/products/waterdrop-reverse-osmosis) - [LeakSecure Leak Detection](/products/leaksecure-leak-detection) - [All recommended products →](/products) - Company - [Blog](/blog) - [About](/#trust) - [Contact](/contact) [(623) 323-4538 Call ](tel:6233234538) Recommended by Dominick Plumbing # Navien Tankless Water Heaters Endless hot water, condensing efficiency — our top tankless pick for Arizona homes. [Get a Quote — (623) 323-4538](tel:6233234538) - Licensed & Insured · ROC #350819 - Pro install & warranty ![Navien Navien Tankless Water Heaters installed by Dominick Plumbing](/assets/service-water-heater-BUJ5GLzx.jpg) Why we recommend it ## Navien Tankless Water Heaters — our honest take Navien NPE-A2 and NPE-S2 condensing tankless water heaters are the units we install most in Scottsdale, Paradise Valley, and Phoenix. Up to 0.96 UEF efficiency, dual stainless heat exchangers, and a built-in recirculation pump on the A2 — endless hot water without the standby loss of a 50-gallon tank. - Condensing efficiency means lower SRP / Southwest Gas bills - Dual stainless exchangers handle Scottsdale hard water far better than competitors - ComfortFlow on the NPE-A2 = instant hot at the fixture, no extra pump install - Navien support and parts availability in the Valley is excellent Key features ## What you're getting - Up to 0.96 UEF — among the most efficient gas water heaters made - Dual stainless steel heat exchangers (won't crack like aluminum) - ComfortFlow® built-in recirculation pump & buffer tank (NPE-A2) - Up to 11.2 GPM — runs multiple showers + laundry simultaneously - 2″ PVC venting up to 60 ft — easier retrofits in Arizona attics - 15-year heat exchanger warranty Specs at a glance ## Navien Tankless Water Heater specifications Capacity 150,000–199,900 BTU/hr Max flow Up to 11.2 GPM Efficiency (UEF) 0.93–0.96 Fuel Natural gas or propane Venting 2″ or 3″ PVC, concentric or twin-pipe Warranty 15-yr heat exchanger / 5-yr parts / 1-yr labor FAQs ## Common questions ### Should I switch from a tank water heater to a Navien tankless in Scottsdale? If your tank is 8+ years old, you run out of hot water with back-to-back showers, or you're tired of a 40–50 gallon tank sitting in the garage soaking up Arizona summer heat — yes. A Navien NPE-A2 will pay back through lower gas bills, free up garage space, and last 18–20+ years vs. 8–12 for a tank. ### How much does a Navien tankless installation cost in Scottsdale? Most Scottsdale Navien installs run $4,800–$7,200 fully supplied and installed, depending on gas line size, venting path, electrical, and whether we need a recirculation return line. We always provide a flat written quote before starting. ### NPE-A2 vs NPE-S2 — which Navien should I get? Get the NPE-A2 if you want instant hot water at every fixture (built-in recirculation pump and buffer tank). Get the NPE-S2 if you have a dedicated recirculation loop or simply want endless hot water at lower install cost. We'll spec the right one for your home. ### Do Navien tankless heaters work with Scottsdale's hard water? Yes — the dual stainless steel heat exchangers are far more scale-resistant than aluminum competitors. We still recommend annual descaling and pairing it with a softener (we like the Encore Reveal) to maximize the 15-year warranty. ## Related services - [Water Heater Install & Repair](/services/water-heaters) - [Water Softeners](/services/water-softeners) ![Dominick Plumbing](/assets/dominick-plumbing-logo-kbhHe4U8.png) Family-owned, licensed plumbers serving Scottsdale and the entire Valley. Clean water. Pure confidence. Licensed · Bonded · Insured ## Contact (NAP) - Dominick Plumbing - Scottsdale, AZ Arizona ROC #350819 - [(623) 323-4538](tel:6233234538) - [info@dominickplumbing.com](mailto:info@dominickplumbing.com) ## Service Areas - Scottsdale, AZ - Paradise Valley, AZ - Phoenix, AZ - Fountain Hills, AZ - Cave Creek, AZ - Carefree, AZ - Tempe, AZ - Mesa, AZ © 2026 Dominick Plumbing. All rights reserved. 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