Traditional water heaters often take up a large part of the garage or basement. When that appliance is ready for replacement, some homeowners consider tankless designs. With no huge water volume to hold, these systems are compact and efficient for an entire household. Like any equipment, however, you must care for the components to see them last several decades.
- Inspect and Clean Filter
Any municipal water supply will have some sediment floating around. A tankless water heater has an in-line filter trap to make the home's water as clean as possible. Ideally, check the filter monthly, but at least rinse it out a minimum of twice a year. You want to wash off any debris caught on the filter and place the filter back in its original location. A clean filter allows water to run smoothly through the system with less stress on internal components.
- Mineral Build-Up
Tap water naturally has minerals mixed in, giving it a slightly opaque appearance. Some of these minerals become trapped in the water heater, eventually building up and hindering operations. It's common to hire a professional to drain and flush the heater once or twice a year. This process removes calcium and lime deposits, along with allowing professionals to look at the interior components. Tankless systems last a lot longer with clean interiors.
- Natural Gas Model Check
Even with a professional installation, pipes can dislodge from earthquakes and basic ground shifting. It's a smart idea to check if a natural gas-powered system has any leaks. Spread some diluted dish detergent on gas connections and watch the bubbles on the pipes. You shouldn't see any new bubbles pop up with a good connection. Any consistent bubbling shows you have a leak. Call a professional immediately and shut off the gas until the area can be repaired.
- Condensate Escape
Direct vent heater systems use a condensate trap in a looped formation on the outside of the housing to allow some water to escape from the system. This loop should have some water trapped in its U-shape while allowing excess water to drip out to a drain. If the trap isn't working correctly, a professional needs to evaluate the issue.
- Freezing Conditions
If your home is prone to freezing conditions, check the freeze protection system periodically. Depending on the system, an internal heater activates to keep the tankless equipment above the freezing mark. The system and the pipes can freeze, leading to extensive damage and hot water failure. To be extra cautious, consider wrapping any water heater pipes with insulation. Keeping the cold off the metal provides enough warmth to allow pipe water to flow freely.
Make it a point to inspect your tankless water heater on a monthly basis. Although it may not require any major service each month, you'll possibly find small issues that can be corrected before they become large problems. Since tankless systems can last nearly 20 years, preventive care is necessary throughout its lifespan.
