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NEW! DOSING TECHNOLOGY

LIQUID JUST GOT SMARTER

Experience the most intelligent salt system on the planet, now with Precision Dosing.

NEW DOSING TECHNOLOGY

LIQUID JUST GOT SMARTER

Experience the most intelligent salt system on the planet, now with Precision Dosing.

FreshWater® IQ is the key to getting the maximum benefit possible from your hot tub by helping to keep your water clean, clear, and balanced. With smart technology at work, your spa is always ready when you are.

Water Care That Works For You

24/7 Water Monitoring

Our FreshWater IQ Smart Monitoring System regularly monitors your spa’s pH, chlorine, and salt levels, displaying updates and step-by-step guidance to your spa’s touchscreen or your smartphone.*
24/7 Water Monitoring

One-Touch Chemical Dosing

With a tap, our new Dosing System dispenses the right amount of pH Up, pH Down, or Phosphate Remover, making it easy to balance your spa water.
One-Touch Chemical Dosing

Built-In Salt-to-Chlorine Generation

Our patented FreshWater IQ Salt System automatically converts salt into chlorine, reducing harsh chemicals while keeping water fresh, soft on skin, and gentle on eyes for up to a full year.**
Built-In Salt-to-Chlorine Generation

Smart Recommendations When Water Needs Attention

FreshWater IQ does the thinking for you. Smart alerts and step-by-step recommendations mean less time maintaining your spa and more time enjoying it.
Smart Recommendations When Water Needs Attention

Enjoy Clean, Balanced Water

Fully integrated and intelligently designed, the FreshWater IQ System delivers crystal-clear, soak-worthy spa water with less effort.
Enjoy Clean, Balanced Water

Three Innovative Technologies.
One Seamless Experience.

FreshWater IQ combines three game-changing innovations, FreshWater Salt, Smart Monitoring, and new Dosing Systems into one integrated solution.

NEW! Dosing System
Our latest innovation, this delivers accurate doses of pH Up, pH Down, and Phosphate Remover with a simple tap, using refillable cartridges tucked discreetly under the spa’s filter lid.
Smart Monitoring System
The brain behind the system, this checks pH, chlorine, and salt levels every hour, and displays updates and actionable recommendations on your screen.
Salt System
The foundation of the system, this generates chlorine from salt using a replaceable titanium cartridge to keep spa water fresh, clear, and natural-feeling.

Our new Hot Spring® Spas app lets you manage, balance, and monitor your spa water anytime, from anywhere. With just a touch, you’ll enjoy added convenience and peace of mind, whether you’re at home or on the go.

FreshWater IQ (Salt System with Smart Monitoring and Dosing) is available on Highlife® and Limelight® Collection spas only. The FreshWater IQ Salt System is available on Hot Spot® Collection spas. FreshWater IQ is not available on Freeflow® Collection spas. Please refer to the compatibility chart below for details.

Benefits of FreshWater IQ

Effortless Water Care

Effortless Water Care

Enjoy more relaxation with less maintenance, longer-lasting water, and fewer manual adjustments.
Clean, Soft, and Clear Water

Clean, Soft, and Clear Water

Experience consistently fresh, natural-feeling water that looks and feels great.
Smart, Worry-Free Control

Smart, Worry-Free Control

Stay in control with 24/7 monitoring and remote access*** that takes the guesswork out of spa care.

Enhance Your FreshWater IQ Experience with the New Hot Spring® Spas App.

Total Control. Total Freedom.

Hot Spring® Spas mobile app interface showing temperature control, jets, lighting, and FreshWater® IQ settings.

With the app, you can:

  • Monitor pH, chlorine, and salt levels1
  • Trigger water care dosing from your phone1
  • Adjust lighting, temperature, and jet strength
  • Activate Clean Cycle or Energy Saving Mode
  • Manage a spa at a second home or rental property
  • Chat with your AI-powered support assistant—24/7

Whether you’re home or away, peace of mind is always within reach.

1. FreshWater IQ is required to use these functions.

The Hot Spring app works with the Connected Spa Kit, a dealer-installed option available on most 2024 and newer Hot Spring spa models. Spa must be within 200 ft (61 m) of your Home Wi-Fi router to work. Ask your dealer for details. Optimized for smartphone use only, not recommended for tablets.

Do I Need the App to Use FreshWater IQ?
Your spa’s control panel has everything you need to use FreshWater IQ. The Hot Spring® Spas app takes it to the next level, giving you remote control and extra features.

Balance Your Water from Anywhere with Precision Dosing

The Hot Spring® Spas app puts expert water care at your fingertips. Monitor water chemistry and apply Precision Dosing with a tap, keeping your spa water clean, fresh, and balanced.

What People Are Saying. Real Owners. Real Peace of Mind.

Everything from delivery to set up went great! Love the IQ System, water feels wonderful and easy to maintain!

Prodigy owner, New York

Watch FreshWater IQ & the Hot Spring Spas App in Action

FreshWater IQ & App Availability by Spa Collection

Highlife® Collection

  • Salt System1 Included
  • Smart Monitoring2 Ready
  • Dosing3 Ready
  • App4 Optional

Limelight® Collection

  • Salt System1 Ready
  • Smart Monitoring2 Ready
  • Dosing3 Ready
  • App4 Optional

Hot Spot® Collection

  • Salt System1 Ready
  • Smart Monitoring2 Not Available
  • Dosing3 Not Available
  • App4 Optional

Freeflow® Collection

  • Salt System1 Not Available
  • Smart Monitoring2 Not Available
  • Dosing3 Not Available
  • App4 Not Available
  1. Salt System generates chlorine from salt to keep water clean, fresh, and natural-feeling with fewer chemicals required.
  2. Smart Monitoring System checks pH, chlorine, and salt levels hourly and provides clear instructions to keep water balanced.
  3. With a tap, Dosing System distributes pH Up, pH Down, and Phosphate Remover to balance water automatically.
  4. The Hot Spring Spas app provides water care updates and allows you to monitor and balance your water anywhere, anytime with a touch.

Add FreshWater Salt, Smart Monitoring, Dosing, & the Hot Spring Spas app powered by the Connected Spa Kit for the full FreshWater IQ experience. Each sold separately. See your local dealer for pricing.

woman testing water temp

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Tools & Resources

Owner’s Manuals

Owner’s Manuals

Get the information you need to get the FreshWater IQ up and running.
FAQs

FAQs

Get answers to common questions for FreshWater IQ.
Informational Videos

Informational Videos

Watch videos for easy-to-follow instructions for setting up FreshWater IQ.

View Resources

Find Your Perfect Spa

Find Your Perfect Spa

Let us recommend the perfect spa for you based on your preferred features and size.
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Choose Your Spa

Choose Your Spa

Browse three distinct Collections with a wide range of models, sizes and features.
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*The FreshWater IQ System is comprised of FreshWater IQ Salt, Smart Monitoring, and Dosing. Components are sold separately. Availability varies by Collection. Not available on Freeflow Collection models.

**Many factors affect the life of spa water, such as bather load and water chemistry. When these factors are accounted for and the spa is properly maintained, the FreshWater IQ Salt System will keep water clean and clear for up to a full year.

***The Hot Spring Spas app is powered by the Connected Spa Kit (sold separately) and enables the smartphone features of the FreshWater IQ System.