LIQUID JUST GOT SMARTER
Your spa pool should take care of you not the other way round
Fully Automated Water Testing System that does the work for you.
Gold Award-Winning Product - SPASA Awards 2025
FreshWater IQ™ won SPASA’s New Product Award and Product of the Year for its innovative, industry-leading technology that automates pH and chlorine, resulting in 90% reduced maintenance time. The award affirms Hot Spring’s leadership in spa innovation and hydrotherapy standards.
FreshWater® IQ, where the most intelligent salt water system on the planet meets ground-breaking monitoring technology.
We are thrilled to unveil the Biggest Revolution in Spa Pool Water Care: the FreshWater® IQ System. After a decade of collaboration our American partners Watkins Wellness, we bring you the first fully integrated and automated Water Testing System in the Spa Pool industry.
Smarter
Automated, ultra-accurate water testing is conducted every hour, and FreshWater® IQ provides you with clear instructions whenever adjustments are required.
Simpler
Spa care made easy. On-screen recommendations remove any guesswork, telling you exactly what to do to maintain your spa water when needed.
Better
FreshWater® IQ is the most comprehensive water care system available. Fully integrated and easy-to-use, it delivers the most luxurious water while requiring minimal effort.
Cleaner
Purity at the push of a button. FreshWater® IQ creates softer, gentler water that stays clean and fresh for up to a year*.
FreshWater IQ Compatability
Salt System Ready
Highlife collection
Highlife® is our most exclusive collection, and represents the epitome of spa pool indulgence. These pools form the natural home for all of our latest and greatest spa pool innovations, and FreshWater® IQ is no different.
- Simply the cleanest water courtesy of our factory-installed FreshWater® Salt System and optional FreshWater® Smart Monitoring System.
- 100% of your spa water filtered 100% of the time.
- Patented jet system for the ultimate hydromassage.
- Best-in-class energy-saving features to save time and money.
Salt System Ready
Limelight® collection
Seamlessly combining elegance and relaxation, the Limelight collection is a high-end range built for those who see spa pools as an opportunity to socialise, and who like to impress. The addition of FreshWater® IQ ensures minimum work and maximum play.
- Crystal clear water courtesy of our optional FreshWater® Salt System and FreshWater® Smart Monitoring System.
- Two-filter design for cleaner water with less effort.
- Premium energy-saving features to save time and money.
- Easy-to-read, on-screen messages takes out the guesswork in spa maintenance
Why choose a spa with FreshWater® IQ?
With FreshWater® IQ you’ll be soaking in your spa while other people are working on theirs.
FreshWater® IQ saves you time
- With FreshWater® IQ, you can reduce the time you spend on spa pool water maintenance by over 90%!
- The FreshWater® Salt System is designed to keep your spa cleaner for longer. Drain and refill your spa as little as once a year.
- With an automated laboratory in your spa pool, say goodbye to stress, guesswork, and reduce mistakes.
- Less time spent maintaining your spa before you can soak. FreshWater® IQ spa pools are always warm, bubbling and ready for a soak.
FreshWater® IQ saves you money
- With the FreshWater® Salt System naturally converting salt to chlorine, and the Smart Monitoring System ensuring chemicals are only added when needed, you use (and pay for) far less.
- Water stays fresh for up to a year, meaning less money spent on replacing the water in your spa.
- No need to invest in test strips and testing equipment for daily use – or to invest your time in conducting those tests – FreshWater® IQ does all the work for you.
- Your time is valuable—and so is your money. Save both by reducing the time and expenses associated with spa pool maintenance.
Key features of FreshWater® IQ
A complete spa pool water care solution, FreshWater® IQ brings a suite of high-end and entirely unique features to the table, including:
Fully automated water testing
FreshWater® IQ automatically tests your spa pool water every hour 24/7. If something needs to happen, it simply prompts you with precise and simple on screen recommendations.
Energy saving mode
This is a system that doesn’t hurt your hip pocket or the earth. Amongst a number of energy efficient features, FreshWater® IQ helps you to keep your electricity bills low by disabling the spa pool heater during on-peak hours when the rates are highest. Automatically shut the heater off for up to 12 hours a day, across two separate sessions.
Instant and auto clean cycles
Enhanced filtration and automation means your spa will ensure that the water is at its cleanest and purest levels whenever you want to soak.
The three technologies behind FreshWater® IQ
FreshWater IQ is designed to deliver one of the most advanced integrated water-care experiences available for supported Hot Spring spas. It helps keep your water clean, clear, and balanced, while reducing guesswork and day to-day maintenance. With smart technology at work, your spa is always ready when you are.
FreshWater IQ blends three game-changing innovations into one integrated solution:
FreshWater® Salt System
Converts salt into chlorine automatically using a disposable titanium cartridge, helping maintain fresh, clear, natural-feeling water with less day-to-day effort. Designed to deliver a steady sanitiser level for more consistent water quality for a comfortable regular soaking.
Smart Monitoring System
Automatically checks your water every hour and keeps you on track with clear guidance shown on your spa’s touchscreen control panel or in the Hot Spring Spas app. Know what your water needs so you spend less time on guesswork and more time enjoying consistently clean water.
Precision Dosing System
Dispenses the precise amount of pH Up, pH Down, and Phosphate Remover when needed, using refillable cartridges incorporated neatly under the filter lid. The Salt System and Smart Monitoring System must be installed and operational for the Dosing System to work.
Hot Spring® Spas App
Enhance your FreshWater IQ experience with the Hot Spring Spas app, your digital spa companion that helps keep you connected to your hot tub wherever you are. Powered by Connected Spa Kit 2, the app brings everyday spa controls and advanced water-care visibility into one place.
General app control includes: adjusting temperature, control lighting, manage jet strength, activate Clean Cycle or Energy Saving Mode, manage a spa at a second home and access AI-powered support.
Advanced FreshWater IQ Controls include:
- Monitor pH, chlorine, and salt levels
- Receive smart water-care guidance
- Trigger water care dosing remotely from your phone on spas equipped with the upgraded FreshWater IQ system
Compatibility by spa collection
Water Care System
Water Care System
Water Care System
Highlife®
Highlife®
Limelight®
Limelight®
Hot Spot®
Hot Spot®
Freeflow®
Freeflow®
Water Care System
Default
Highlife®
FreshWater® Salt System
Limelight®
‐
Hot Spot®
‐
Freeflow®
FROG System
Water Care System
Built-in system choice
Highlife®
‐
Limelight®
Salt System or Ozone System
Hot Spot®
Salt System or Ozone System
Freeflow®
‐
Water Care System
Optional add-on
Highlife®
‐
Limelight®
‐
Hot Spot®
‐
Freeflow®
Ozone system
FreshWater® IQ System
FreshWater® IQ System
FreshWater® IQ System
Highlife®
Highlife®
Limelight®
Limelight®
Hot Spot®
Hot Spot®
Freeflow®
Freeflow®
FreshWater® IQ System
Freshwater IQ
Highlife®
Available
Limelight®
Available with Salt System
Hot Spot®
‐
Freeflow®
‐
FreshWater® IQ System
Smart Monitoring System
Highlife®
Available
Limelight®
Available
Hot Spot®
‐
Freeflow®
‐
FreshWater® IQ System
Precision Dosing System
Highlife®
Available with Salt System + Smart Monitoring
Limelight®
Available with Salt System + Smart Monitoring
Hot Spot®
‐
Freeflow®
‐
Download our Free Spa Pool Buyers Guide
With over 45 years experience and the most spas sold globally, our guide clearly outlines what you need to consider when buying a spa pool. This will ensure your running costs and maintenance time are the lowest in New Zealand, making your soak completely stress free.
What would you do with the time you win back?
FreshWater® IQ gives you back that most valuable of resources: time.
With your spa pool essentially taking care of itself, you get to choose what to do with all those hours saved. And with on-tap access to the world’s most luxurious spa pool water, where better to spend this newfound freedom than in the warm and bubbling waters of your Hot Spring spa pool.
FreshWater® IQ offers more chances to make memories. It’s ideal for:
Couples
At the end of a busy workday, the last thing you want to do is spend time checking and maintaining your spa water. With FreshWater® IQ you can spend your time relaxing and unwinding with your partner. The soft, fresh, warm and bubbling waters of a Hot Spring spa pool creates the perfect romantic setting for you and your partner.
Find the perfect spa for two
Families
Hot Spring spa pools are the perfect place for quality family time – a relaxing and 100% device-free place for your family to connect on a deeper and more meaningful level. FreshWater® IQ ensures that your family is soaking in the safest, highest quality water possible with less maintenance & more time soaking.
Explore family-sized spas
Retirees
You have earned the right to relaxation and enjoyment, and no spa pool delivers on that dream like a Hot Spring spa with FreshWater® IQ. Spa pool maintenance made easier than ever before. Automated testing and simple on screen instructions will keep your water at an optimal level every time you use your spa pool.
Find your relaxation spa
Entertainers
As an entertainer you want your spa pool to be ready to use at a moments notice. As a host you want to ensure that your water is of the highest quality and with the help of FreshWater® IQ this can be achieved every time. Your spa will ensure your guests always enjoy the most incredible soaking experience.
Explore spas perfect for entertainingFreshWater® IQ vs the rest: how much better is it?
FreshWater® IQ is a genuinely revolutionary technology. How revolutionary? A quick comparison with other spa pool brands tells you exactly how technologically advanced it is.
FreshWater® IQ is a system that is built to solve the water care and spa maintenance frustrations felt by so many spa pool owners. Check our comparison table to see how our solution differs from the others on the market.
Innovation: It’s in our DNA
At Hot Spring, we have spent over five decades at the leading edge of spa pool innovation and today, we are recognised as the world’s most technologically advanced spa pool brand.
But not satisfied with simply being the best, we continue to aim higher through significant investment in research and development.
Have questions about FreshWater IQ?
Wondering how FreshWater IQ works, how it compares, or whether it’s right for you?
Share a few details and our team will help answer your questions — no obligation, just clear, expert advice.
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Readers Digest - Most Trusted Brand 2026
Winner of the most trusted Spa Pool & Sauna brand category, as voted by New Zealanders.