pHin By Hayward

Save $344.11

$349.99 $694.10

pHin automates pool and hot tub water care by monitoring your water 24/7 and notifying you when it's time to add chemicals. With pHin you never need to worry about over chlorinated or out of balance water ever again. Works with chlorine, bromine and salt water based hot tubs, pools and spas.

monitor be notified add chemicals
x Continuous Water Monitoring is More Effective and Reliable

pHin Treats Balancing Water Chemistry Differently Than You May Be Used To

Traditionally, water chemistry is measured about 1 time per week. This certainly helps to monitor the health of your water, but we, at pHin, have developed a smarter approach. pHin measures your vessels’ pH, sanitizer level and temperature over 1000 times per week.

There are many environmental factors that can temporarily affect water chemistry like: usage, weather, water temperature, sunlight exposure, etc.

pHin’s built-in intelligence creates customized recommendations based on your pool or hot tub’s unique averages. This means that pHin’s recommendations may be different from a single water sample, but we find when customers follow our recommendations their pools are more likely to stay balanced.

automatic app notifications

Automatic App Notifications

pHin will proactively alert you on your smart phone with an automatic notification when you need to adjust your pool or hot tub's chemicals. This monitoring service will let you know exactly how much of which chemicals need to be added.

takes guesswork out of chemicals

Takes the Guesswork Out of Your Chemicals

Scan any supported chemical’s barcode and the pHin app will calculate exactly how much to add to your water. You will never need to worry about over chlorinated or out of balance water again.

We are committed to our customers. In the rare event the brand of chemicals you prefer is not already supported, you can notify pHin and within two weeks we will add your brand to our supported chemical list.

1 year monitoring service

Includes 1-Year Monitoring Service

When you buy your pHin monitor, you’ll get your first year of the pHin Monitoring Service for free*.

The Monitoring Service includes:


  • Water history charts
  • Easy, accurate chemical dosing directions
  • Alerts for when attention is needed
  • Tests for total alkalinity, total hardness, and cyanuric acid monthly or as needed
  • Shareable water data for in-person help or to order new chemicals at your favorite pool store
  • Unlimited pHin monitor replacement


*Monitoring Subscription is 99 dollars/year after the first year, and includes a 1 year product replacement extension with each renewal

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