Tankless water heaters, often referred to as on-demand water heaters, have gained popularity due to their energy efficiency, space-saving design, and virtually limitless hot water supply. Many homeowners are drawn to these systems under the impression that they are “maintenance-free,” a belief that is not only incorrect but can lead to serious system issues and costly repairs over time.
Let’s dispel that myth and explore why regular maintenance is essential to keeping your tankless water heater in Gibsonia running efficiently and reliably.
The Maintenance-Free Myth
One of the most common misconceptions about tankless systems is that, unlike traditional tank water heaters, they don’t require routine maintenance. This myth stems from the absence of a storage tank that could accumulate sediment. While it’s true that tankless units don’t store water in the same way, they are still subject to mineral buildup—especially in areas with hard water.
In reality, all water heaters that interact with your home’s water supply are vulnerable to the effects of scale, corrosion, and sediment. Tankless systems use intricate heat exchangers and narrow piping that are particularly sensitive to calcium buildup. Over time, this can reduce efficiency, increase energy costs, and eventually lead to breakdowns.
What Happens Without Maintenance?
Neglecting your tankless water heater can result in:
- Mineral scale buildup: Hard water can lead to calcium deposits on the heat exchanger, significantly reducing efficiency and lifespan.
- Reduced water flow: Blockages from scale can restrict water flow, causing inconsistent heating or system shutdowns.
- Increased energy usage: The system must work harder to heat water through scale-covered components, leading to higher energy bills.
- Voided warranties: Most manufacturers require regular maintenance for the warranty to remain valid.
Essential Maintenance Tasks
Fortunately, maintaining a tankless water heater is relatively simple and pays off in the long run. Here’s what’s involved:
- Descaling or Flushing: This should be done at least once a year, or every six months in areas with hard water. It involves circulating a vinegar or descaling solution through the heater to remove mineral deposits from the heat exchanger.
- Cleaning the Inlet Filter: The inlet water filter prevents debris from entering the system and should be inspected and cleaned regularly.
- Checking the Venting System: If your tankless system uses gas, we need to make sure the air intake and exhaust are clean and unobstructed to ensure proper combustion and airflow.
- Inspecting the Burner and Ignition: These components should be checked for proper function and cleanliness during annual professional servicing.
Professional or DIY?
While some handy homeowners can handle basic flushing and filter cleaning themselves, it’s a good idea to schedule an annual professional inspection. Technicians can spot early signs of wear, test system performance, and ensure everything is up to code and running safely.
Tankless water heaters are efficient, reliable, and long-lasting—but only with proper care. The myth that they require no maintenance is not only false, but potentially damaging. Treat your tankless system to annual maintenance, and it will return the favor with years of uninterrupted hot water and savings on energy costs.
Don’t skip the upkeep—your tankless water heater depends on it. Schedule an appointment with the experts at Kennihan Plumbing & Heating, Inc. We treat your home like it’s our grandma’s home.