Over time, sediment buildup in your heat pump water heater can lead to reduced efficiency, overheating, and even premature failure of the unit. Regular flushing of the tank is a crucial maintenance task that can extend the lifespan of your heater and ensure it runs smoothly. This infographic provides a step-by-step guide to effectively flush sediment from your water heater, helping you avoid common issues and maintain optimal performance.

Steps to Flush Sediment from Your Heat Pump Water Heater:

  1. Turn Off the Power Supply:

    • Ensure safety by turning off the power to the water heater at the circuit breaker.
  2. Turn Off the Water Supply:

    • Shut off the water supply to the heater to prevent any incoming water during the flushing process.
  3. Attach a Hose to the Drain Valve:

    • Securely attach a garden hose to the tank's drain valve, leading the other end to a drain or outside area where the discharged water can safely flow.
  4. Open the Drain Valve:

    • Open the valve to allow water to flow out, carrying the sediment with it. You may need to open a hot water tap nearby to allow air into the system and facilitate draining.
  5. Flush the Tank Until Clear:

    • Continue to let water run through the tank and out the hose until it runs clear, indicating most of the sediment has been flushed out.
  6. Close the Drain Valve and Refill the Tank:

    • Once the water runs clear, close the drain valve, remove the hose, and turn the water supply back on to refill the tank.
  7. Turn the Power Supply Back On:

    • After the tank is refilled, restore power to the heater, ensuring it's ready to heat water efficiently once again.


Regularly flushing your heat pump water heater is a simple yet effective way to prevent sediment buildup, ensuring your system operates efficiently and extends its useful life. By following these steps, homeowners can perform this maintenance task with confidence, keeping their water heater in top condition. Remember, an ounce of prevention is worth a pound of cure, especially when it comes to maintaining your home appliances.