How to Flush a Tankless Water Heater

Propane tankless water heaters offer an efficient and space-saving solution in many households. Whenever you need to cook, complete laundry or take a shower, the system pushes water through a heat exchanger without needing a storage tank.

Over time, sediment and minerals can buildup in the pipes and heat exchanger. Learn how to flush a tankless water heater or have peace of mind by hiring professionals to complete the task as part of your regular maintenance.

Importance of Tankless Water Heater Cleaning

Minerals, like calcium and magnesium, naturally build up inside water heaters over time. The sediment can cause clogs and erode the walls of a heating chamber.

Routine tankless water heater flushing and cleaning removes the scale buildup to enhance system performance, prevent wear and tear and extend the life span of a unit for long-term savings.

How Often Do You Need to Flush Tankless Water Heaters?

To maintain optimal performance and longevity, most manufacturers and plumbers suggest flushing a propane tankless water heater at least once annually.

Mineral buildup accumulates faster inside systems with hard water. Professionals usually recommend flushing the system every six to nine months if you have hard water.

How to Flush a Propane Tankless Water Heater

Hiring professionals to flush your propane tankless water heater can save you time and effort. Experts have the right skills and tools to properly and efficiently complete this routine maintenance. If you want to flush a tankless water heater on your own, follow these steps:

1. Turn off the isolation valves and gas: Turn off your water heater’s power source, central gas and water valves. Make sure the valves are perpendicular to the pipes and in the off position.
2. Connect the hosing line: Remove the hot and cold water valve’s purge port valve caps. Connect a hosing line to each valve, and ensure the connection is watertight to prevent leaks during flushing.
3. Add undiluted white vinegar: Use undiluted white vinegar to clean the water heater. Avoid using any chemicals.
4. Drain the tankless heater: Follow your tankless water heater’s instruction manual to drain the unit. Replace the purge port valves to restore everything to its original position.

Contact Foster Fuels for Propane Tankless Water Heater Solutions

The professionals at Foster Fuels have the expertise to provide your full-service propane tankless water heater services. Need your tankless water heater flushed or want to have one installed? We perform each task safely and effectively while protecting your unit.

Contact our team to learn more about our offerings and request a quote today.