Home / Dealing With Sediment And Mineral Deposits In Tankless Water Heaters

Dealing With Sediment And Mineral Deposits In Tankless Water Heaters

June 24, 2025

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Tankless water heaters, despite their advanced features and compact design, are not immune to sediment and mineral buildup. While they have very few maintenance needs, they are still affected by this undetected water content. They soon lead to major water heater repair in Red Bank, NJ, and also major costs. 

Tankless Water Heaters And Hard Water Mineral Content

Homeowners discover that scale from hard water can accumulate inside their tankless units. It shows in restricted water flow and reduced heating efficiency. Some pipes and metal parts may show discoloration or other damage signs. These issues compromise performance and lead to premature wear.

In some cases, the buildup becomes severe enough for a water heater replacement. If it’s too late, internal components like heat exchangers are already heavily coated in minerals. Some parts may also need replacement. Repair costs are almost the same price as a new unit. 

If the tankless unit is more than 20 years old, replace the older, inefficient system with a more advanced model. They have more upgraded features and are more energy efficient. 

How Sediment And Mineral Deposits Form

Despite the compact and high-efficiency design of a tankless water heater, it’s still sensitive to scaling. Unlike traditional tank models that store water, these systems heat water on demand through narrow channels. Pipe buildup is easier to happen and cause more serious obstructions. Proper water treatment and preventive care are critical.

A quality water heater installation is very important. Proper sizing and flow rates during installation are key to a problem-free start. 

Tankless units prefer clean water. A dedicated pre-filter or whole-house water filter system prevents minerals from entering the system. 

Proper Maintenance

Ongoing water heater maintenance prevents sediment and mineral buildup, aside from filters or filter systems. Regular flushing helps remove scale buildup before it causes internal damage. Maintenance routines may also include cleaning the inlet screen filter and inspecting pressure relief valves. There are also advanced tankless units with maintenance features.

Your tankless water heater installation still needs maintenance to keep its longevity and reliability. Call Garon T Plumbing, Heating, and Air Conditioning today and get it professionally done.

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