5 Steps to Drain & Refill Your Hot Tub

How do I go about draining and refilling my spa?

Draining your spa is easy and simple. If you are planning to remove unseen build-up in your spa plumbing using BioGuard System Flush, do so before draining your spa. Instructions on how to properly use this chemical can be found on the bottle. If you have any questions, our water care experts will happily assist you.

Follow these 5 steps:

  1. Turn off the pump, the thermostat, and the power in that order
  2. Attach a garden hose to the drain valve and run the hose to somewhere it will safely allow the water to drain away. Once the drainage valve is open, gravity will empty the spa. A little bit of water may be left in the footwell, but that only needs to be removed if you are putting the spa away for the winter.
    • Note: Since there are chemicals in the spa water, you will want to make sure that the water goes into the drainage system rather than soaking into your lawn.
  3. To refill your spa, run the garden hose from the tap and fill the spa to its normal operating level.
  4. Once the spa is full, you need to prime the pump.
    • Note: It is important to get all of the air out of the system in order not to damage the pump or the heater when the spa starts operating normally again. While some spa pumps are self-priming, it is important to always follow the instructions you received with your particular spa for this vital stage. It’s always best to follow the manufacturer’s instructions. If you don’t have access to your manufacturer’s instructions, a common way of purging air from your system is to add the water through the filter area. Take the filter out and add it through that spot.
  5. Check and balance the fresh water for pH and calcium hardness and set the thermostat to bring your spa up to temperature. To be sure your spa water is balanced properly, bring a water sample to our water care experts at either of our locations in Fayetteville or Lumberton.

Now that you know how to properly drain and refill your hot tub, consider how often this should be done here.


Still have Spa care questions? Call, email, or direct message us through Facebook or Instagram any time.

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