Common Issues with Tankless Water Heaters

Tankless water heaters, also known as “on-demand” water heaters, are celebrated for their energy efficiency and endless hot water supplies. However, these modern marvels are flawed, with a set of challenges and quirks. They are subject to inconsistent water temperatures and mineral deposit buildups, but luckily, most issues are manageable with know-how and professional plumbing maintenance.

Here’s what you need to know about common tankless water heater problems and how to keep yours in top-notch shape.

How Tankless Water Heaters Work

Traditional water heaters store hot water in a tank, continuously heating it until you use it, which is a significant drain on resources and energy. Tankless water heaters, however, heat water as needed, allowing cold water to flow through a heating element to keep you in a steady supply of hot water—perfect for long showers or back-to-back loads of laundry.

Because they heat water instantly, tankless systems can be more sensitive to changes in water flow, pressure, and maintenance needs.

Frequent Problems with Water Flow and Temperature

• The flow rate is too low: Tankless heaters require a minimum water flow to activate the heating elements. If the water pressure is low, the heater may not engage, resulting in lukewarm or cold water.
• Too many simultaneous demands: If you’re running the dishwasher, shower, and washing machine simultaneously, the unit may struggle to heat enough water for all tasks.
• Improper sizing: A unit too small for your household’s needs can’t keep up with demand.

Why Tankless Water Heaters are Prone to Scaling and Mineral Buildup

Hard water is a tankless water heater’s worst enemy. Over time, minerals like calcium and magnesium can accumulate inside the heating elements, reducing efficiency and causing damage. Common signs of scaling include reduced water flow, noisy operation, and fluctuating temperatures.

Troubleshooting Electrical or Gas Supply Issues

Another frequent cause of tankless water heater issues is an interruption in the energy supply:

• Electric models: Check for tripped circuit breakers or blown fuses. Inspect wiring connections to ensure everything is secure.
• Gas models: A lack of gas supply, insufficient gas pressure, or a dirty burner can prevent proper heating. Inspect the gas line, clean the burner, and ensure adequate ventilation.

If these fixes don’t resolve the problem, it’s time to call a professional to diagnose and address more complex issues.

Routine Maintenance for Tankless Water Heaters

While tankless water heaters are a fantastic upgrade for many homes, they’re not without challenges. Staying on top of maintenance extends the lifespan of your tankless water heater and ensures it operates efficiently, saving you money in the long run. contacting Elk Grove Village Sewer & Plumbing will save you hassle and stress.