How do I return my pHin and cancel my subscription?

If you purchased your pHin at a retail store or on Amazon, please return it to the place of purchase and follow their return policy. Unfortunately, we are unable to accept pHins that were sold elsewhere.
If you bought your pHin on, and you are on a monitoring only subscription, you may return it to us within 30 days of purchase in its original packaging and we’ll issue you a refund for the purchase price.

Our chemical subscribers will receive a refund for any unused months of their chemicals, assuming that they return the hardware in good condition. Please note, there is a  $99 early cancellation fee for chemical subscribers who cancel within the first 3 months to help cover costs associated with starting up a chemical subscription.

To return your pHin, please follow these instructions:

  1. Contact Customer Care at to initiate the return process.
  2. Follow the instructions provided by Customer Care to send your pHin back to us.
  3. Once we receive the product, we will credit you account using your original payment method.