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Navien Tankless Water Heaters and Combi-Boilers in the Triangle

Element Service Group installs, services, and repairs Navien condensing tankless water heaters and combi-boilers across Apex, Cary, Raleigh, and the Triangle.

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Navien Tankless Water Heaters and Combi-Boilers, Installed and Serviced by ESG

Navien, made by Kyungdong Navien, is one of the most recognized names in condensing tankless water heaters. The brand built its reputation on high-efficiency, gas-fired systems that deliver continuous hot water while taking up a fraction of the space of a traditional tank. Many of the systems we see across the Triangle are ENERGY STAR rated, built around dual stainless steel heat exchangers, and engineered for low NOx operation, a combination that appeals to homeowners who want efficiency without giving up performance.

Element Service Group is a residential plumbing company based in Apex, North Carolina, and all of our work is done by licensed plumbers. We install, service, and repair Navien systems, and we use genuine manufacturer parts. We are an independent service provider, not a factory-authorized dealer, which means you work directly with the same local team for installation, annual maintenance, and any repair down the road. That continuity matters with tankless equipment, where correct sizing, venting, and gas supply make the difference between a system that runs reliably and one that throws error codes.

Tankless and combi systems reward proper care. Minerals in the water form scale inside a heat exchanger over time, and homes on well water usually see it faster than homes on soft town water. Left alone, scale reduces efficiency, slows flow, and shortens the life of the unit. Our team handles the full picture: new installations and replacements, recirculation setup, combi-boiler service, venting and gas work, and the regular descaling that keeps a Navien running at the efficiency it was designed for.

Why us

Why choose us for Navien

Licensed plumbers

Every Navien installation, service call, and repair is done by licensed plumbers, so the gas, venting, and water connections are done right the first time.

Genuine manufacturer parts

When a repair calls for a replacement component, we use genuine Navien parts that match your system, helping preserve its performance and rated efficiency.

One local team, start to finish

As an independent service provider, ESG handles installation, annual maintenance, and future repairs with the same crew, giving you a single point of contact for the life of the system.

Deep tankless experience

We work on condensing tankless systems every week and are experienced with the category broadly, including other brands like Rinnai, so we understand how these units behave in real Triangle homes.

Recirculation done right

From Navien models with built-in ComfortFlow recirculation to external recirculation setups, we configure your system so hot water reaches your fixtures faster.

FAQ

Navien questions, answered

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Licensed & Insured

Fully licensed and insured for your protection

24/7 Emergency HVAC

Available when you need us most

16+ Years

Over a decade of trusted service

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