navien boilers

How Often Maintenance Navien Tankless Water Heater?

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How Often Maintenance Navien Tankless Water Heater? Many tankless water heaters can work efficiently for 20 years or more, but they do require periodic servicing. Annual maintenance is often essential for the manufacturer’s warranty policy. How do you maintain a Navien tankless water heater? What happens if you don’t descale tankless water heater? What happens